66results about How to "Effective pH adjustment" patented technology

The invention provides a method for preparing a copper / ceramic composite substrate on the basis of low-melting-point glass powder. The method comprises the following steps: (1) preparing low-melting-point glass powder; (2) preparing an organic carrier; (3) preparing copper electronic paste; and (4) preparing a copper / ceramic composite substrate. According to the method, the BZBS glass powder which is prepared by employing a sol-gel method is used as a glass binder, and the copper powder is used as a functional phase, so that a copper thick film with good properties is obtained. The glass binder is good in wettability and relatively low in beginning wetting temperature, so that the thick film is sintered to be compacted, and good properties can be obtained. Meanwhile, the sintering temperature is kept for a period of time to melt the glass powder and to sufficiently wet the functional phase and the substrate, so that the increment of copper powder particles is facilitated, and the sintering is promoted.

The invention relates to a preparation method of millet germinated brown rice rich in gamma-aminobutyric acid. The preparation method comprises the following steps of firstly, hulling millets, removing millet husks, mainlining millet bran and germs to obtain millet brown rice, and cleaning the millet brown rice by subacidity electrolyzed water with available chlorine of 5-300ppm so as to obtain cleaned millet brown rice; 2) soaking the cleaned millet brown rice into a CaCl2 culture liquid for 8-12 hours, removing a soaking liquid, sprouting out of the sun, and culturing for 48-72 hours; and 3) carrying out enzyme deactivation and drying treatment on the millet brown rice after germination culture so as to obtain millet germinated brown rice. The method provided by the invention can be used for effectively controlling the microorganism pollution in the germination process, is high in germination rate and is short in germination time; the enrichment degree of nutritional components in the millet germinated brown rice obtained after germination can reach 126.60mg / 100g, and is a novel functional food and an ideal whole-grain food.

The invention provides an acidic soil conditioner, a preparation method and application thereof. The acidic soil conditioner is formed by compounding of industrial waste, mineral raw materials and anSE functional material in certain proportion. The SE functional material comprises a glucoamylase treatment substance and amino acid biochar, as well as one or more of alginic acid, polyaspartic acid,polyglutamic acid and potassium fulvate. The acidic soil conditioner provided by the invention can effectively adjust the soil pH value, neutralize free acid, passivate activated aluminum, and solvethe problems of "acidity and toxicity" of soil; being rich in humic acid and organic matters, the acidic soil conditioner can effectively improve soil, restore the granular structure, increase the content of organic matters, and improve the water retention, fertility increasing and breathability of soil; the acidic soil conditioner can improve the rhizosphere soil microenvironment, enhance root activity, and promote nutrient uptake and utilization, also can improve the crop stress resistance and effectively prevent crop premature senescence, thus being a conditioner having the efficacy of improving soil and promoting crop growth.

The invention discloses a novel refining agent for textile, which is characterized by comprising the following components in parts by mass: 20-30 parts of fatty alcohol polyethenoxy ether, 3-10 parts of carboxyethyl thiosuccinic acid, 7-11 parts of alkyl polyglucoside, 3-8 parts of polyethyleneglycol, 2-8 parts of buffer solution, 3-7 parts of tea saponin, 10-15 parts of sodium hydroxide solution, 5-8 parts of oxydol, 3-6 parts of emulsifier, 3-6 parts of preservative, 4-8 parts of flame-retardant additive and 25-35 parts of ionized water. The carboxyethyl thiosuccinic acid can reduce the foam generation quantity, thereby ensuring the whiteness of the textile; the buffer solution can effectively regulate the pH value of the refining agent, so that the pH value does not need to be regulated by adding sulfuric acid and acetic acid, thereby reducing the number of times of water flushing; the preservative enables the pretreated textile to have certain bacterial resistance, so that the textile can inhibit bacteria, mold and the like; and the flame-retardant additive enables the pretreated textile to have certain flame retardancy.

The invention relates to the technical field of agricultural environment conservation and repair, in particular to a composite soil conditioner. The composition soil conditioner is prepared from, by weight, 30-60 parts of limestone flour, 25-50 parts of decomposed straw, 10-30 parts of sepiolite and 1-10 parts of K2HPO4. The composite soil conditioner comprises four effective ingredients, the pH of soil can be stably kept at a certain level, and particularly, the pH of acid soil can be effectively adjusted; phosphate radical and humic acid in the conditioner can effectively chelate and deposit available cadmium in soil, and pollution brought by cadmium metal to soil and crops is reduced.

The invention discloses a coated controlled-release preparation for relieving soybean saline-alkali stress and a preparation method and application thereof. The preparation method of the coated controlled-release preparation comprises the following steps: preparing an organic fertilizer and a soil conditioner as nuclear materials; continuously adding a bonding agent; mixing and granulating; drying; wrapping with a controlled-release coating material. The prepared coated controlled-release preparation for relieving soybean saline-alkali stress is applied to saline and alkaline land for planting soybean, so that the utilization rates of the organic fertilizer and the soil conditioner can be increased, the surface oil layer of the saline and alkaline land keeps low salinity and high nutrition, stable growth of the soybean is promoted, the soybean yield is increased remarkably, an optimized management mode of sustainable utilization of saline-alkali soil resources is realized, a basis is laid for the management of saline and alkaline farmland, and peasant income is increased.

The invention discloses an alkaline organic fertilizer for restoring soil polluted by heavy metals and a preparation method of the alkaline organic fertilizer, and relates to the technical field of agricultural fertilizers. The alkaline organic fertilizer is prepared from, by weight, 1-3 parts of urea, 1-3 parts of potassium sulphate, 2-6 parts of diammonium phosphate, 10-30 parts of tobacco straw, 30-40 parts of alkaline ash, 15-35 parts of livestock manure, 10-30 parts of bean stalks, 10-30 parts of purple soil, 1-3 parts of microelements, 0.5-1.5 parts of biological bacteria, 3-5 parts of lime nitrogen and 0.02-0.04 part of nitragin. The alkaline organic fertilizer has a good restoring effect on the soil polluted by the heavy metals, is suitable for being used in acidic soil, can be used for farmland soil heavy metal pollution restoration and ecological improvement in southern paddy fields in China, and can also be used for dry farmland soil heavy metal pollution restoration and ecological improvement in the south.

The invention provides a method for preparing low-melting-point quarternary BZBS (BaO-ZnO-B2O3-SiO2) glass by virtue of a sol-gel method. The method comprises the following steps: 1) preparing ethyl orthosilicate pre-hydrolysate; 2) preparing sol; 3) preparing xerogel; 4) firing glass; and 5) grinding and screening the obtained xerogel to obtain xerogel powder, pretreating the xerogel powder in a muffle furnace, then carrying out firing at a temperature of 950-1050 DEG C for 0.5-1.5 hours, and then rapidly cooling to the room temperature on a steel plate to obtain low-melting-point quarternary borate glass. The method is reasonable in process condition, a gel structure of the glass is a network structure formed by SiO2 and B2O3 together, and the glass is microcrystalline glass, is good in wetting property, good in clarification effect, strong in crystallizing capability and best in comprehensive performance.

The invention relates to a preparation method of an interstitial boron doping titanium dioxide photocatalytic material and application. An interstitial boron doping TiO2 nanometer photocatalyst can beprepared by a low-temperature sol-gel method, wherein the interstitial boron ions have an effect of serving as Lewis acid sites on the catalyst surface, and the adsorption effect on Lewis alkaline phenol is greatly enhanced. Compared with the prior art, the preparation method disclosed by the invention has the advantages that adsorption of phenol in water can be effectively enhanced, the selective adsorption aim can be achieved by virtue of different chemical configuration adsorption effects, and finally the aim of rapidly oxidizing targeted pollutants is achieved by virtue of a photocatalytic oxidation technology. The method is simple, feasible, obvious in enhanced adsorption effect, high in selectivity and high in catalytic efficiency.

The invention provides a method for improving tobacco field soil by using local polygonum hydropiper as green manure. The method comprises the following steps: directly sowing polygonum hydropiper seeds at a tobacco nest of a shifting rod after a field ridge shifting rod is arranged at the end of tobacco harvesting; or sowing polygonum hydropiper seeds in the furrows of the original tobacco fieldwhen the middle leaves of the tobacco are harvested or are finished harvesting; or after tobacco leaves are harvested, tobacco stubble plants are removed and tobacco field deep ploughing is carried out, polygonum hydropiper seeds are sown according to set row spacing of local tobacco planting; or polygonum hydropiper seeds are sown in different places; when the polygonum hydropiper plants grow to20-50cm, the polygonum hydropiper plants are cut and laid in the furrows of the tobacco field or on a set tobacco leaf planting line, and after biochemical treatment, the polygonum hydropiper plants are turned into the tobacco field and are ridged to be used as green manure to improve the soil of the tobacco field. According to the method for improving tobacco field soil by using polygonum hydropiper as green manure, the polygonum hydropiper is used as a new green manure for the tobacco field, a soil conditioning crop variety is newly added to the tobacco field, the soil of the tobacco field is improved by combining the advantages of the polygonum hydropiper, the improvement effect is good, and the production cost is greatly saved.

The invention discloses a high-efficient culture method for prawns. The method comprises the following steps: before putting young prawns, sufficiently sunning a pond and carrying out disinfection, then filtering water sources, fertilizing water, and diluting fertilized water when the young prawns are placed; when the young prawns are put, pouring powerful effective microorganisms (EM) and beneficial bacteria prawn protecting drugs, wherein the use amounts of EM and the beneficial bacteria prawn protecting drugs are 1 kilogram per mu (a unit of area equal to 0.0667 hectares); while managing young prawns, feeding powdered high nutrient feeds three times a day at regular hours and in fixed quantities, and observing materials on a material platform and lengths of the prawns; during culture of the prawns, within the first month after the prawns are thrown, changing water every five days, wherein 5-10 cm deep water is changed each time, within the first to third months after the prawns are thrown, changing water every seven days, wherein 10-20 cm deep water is changed each time, and starting a waterwheel aerator everyday, wherein the waterwheel aerator operates for 4 to 5 hours in rainy days and 2 to 3 hours in sunny days. Compared with the prior art, the prawns are fed by the powdered high nutrient feeds, thereby being capable of effectively improving the growth and enhancing the immune function of Penaeus monodon to shorten the growth periods of the prawns so as to improve the culture efficiency.

The invention relates to the technical field of production of fertilizers, and particularly discloses a preparation method of a cornifin amino acid fertilizer. The preparation method of the cornifin amino acid fertilizer uses waste hairs as raw materials, and is characterized by comprising the following steps of (1) putting water into a reaction kettle, and heating; (2) stirring the heated water, adding an alkaline liquid, and uniformly mixing; (3) adding the waste hairs into the thinned alkaline liquid at uniform speed, stirring at constant temperature, chelating, completely decomposing, and converting into an amino acid liquid; (4) adding a pH (potential of hydrogen) regulating agent into the amino acid liquid, draining the amino acid liquid out of the reaction kettle, filtering and cooling, so as to obtain an amino acid liquid fertilizer. The preparation method has the advantages that the required equipment is simple, the operation technique can be easily controlled, the source of raw materials is enough, the investment is little, the demand amount is large, and the social and economic benefits are good; the pH value of soil can be effectively regulated, and the acid soil can be well improved.

The invention discloses a citrus bioflavonoid active beverage and a making method thereof. By means of bioflavonoid extracted from biological raw materials through deep processing, the beverage is prepared from, by mass, 80% of water, 8% of fructo-oligose, 7% of polydextrose and 5% of bioflavonoid. The flavonoid functional beverage obtained through the method creates the environment protection benefits, the economic benefits and the social benefits; meanwhile, citrus bioflavonoid has effects of vitamin P samples and can influence the functions of blood vessel wall cells and blood platelets, the functions of white blood cells, the coagulation process, the hemorheology and the formation of thrombus, multi-methoxy compounds such as nobiletin, sinensetin and tangeritin in citrus bioflavonoid have important pharmacological effects, erythrocyte aggregation in human bodies can be reduced, and the blood cell sedimentation rate is decreased.

The invention relates to a Fondaparinux sodium composition injection and a preparation method thereof. The injection is prepared from raw materials as follows: 5-10 parts by mass of Fondaparinux sodium, 6-12 parts by mass of sodium chloride, 2.6-3 parts by mass of a buffer solution and 3-6 parts by volume of water for injection, wherein the buffer solution is a mixture of citric acid, sodium hydroxide and hydrochloric acid, and a mass ratio of citric acid, sodium hydroxide and hydrochloric acid is (2.4-2.6):1:(1.3-1.9); the raw materials are subjected to orderly feeding, stirring, filtering, reflowing, filling, nitrogen charge, fused sealing, high-temperature sterilization, light inspection after cooling, packaging and checking, and the Fondaparinux sodium composition injection is obtained. The Fondaparinux sodium composition injection prepared with the method cannot produce crystals, is good in clarity, greatly improves the stability and is better applied to clinical treatment.

The invention discloses a comprehensive bio-organic fertilizer capable of improving quality of agricultural products and a preparation method of the comprehensive bio-organic fertilizer, and relates to the technical field of agricultural fertilizers. The comprehensive bio-organic fertilizer capable of improving quality of agricultural products is prepared from, by weight, 45% compound fertilizer,fecal residue and waste water, bean pulp, crop straw, amino acid, calcium oxide, microelement, biological bacteria, swill, waste residues of fungi and composite additives. The preparation method includes the steps of (1) preparation of raw materials; (2), pretreatment of the raw materials, including pretreatment of bean pulp, swill and waste residues of fungi; (3), primary fermentation; (4), secondary fermentation; (5), tertiary fermentation; (6), drying; (7), mixing. The comprehensive bio-organic fertilizer has the advantages of neutralizing soil acidity, improving soil structure, removing hardened soil, improving contents of organic matters and microbial flora in soil, improving quality of agricultural quality and the like, and is applicable to planting of fruits and vegetables in the South of China.

The invention discloses a method for enhancing the activity of microorganism in kitchen waste compost by using sodium acetate in the technical field of organic waste treatment. An analog kitchen waste is composed of potatoes, rice, carrots, leaves, meat, soybeans and inoculated soil. Under a certain ventilation condition, a composting system is kept under an indoor temperature condition to carry out analog kitchen waste composting treatment. In the fifth and the ninth days after composting, proper amounts of samples are selected respectively, an organic acid and salt or an alkali are added into the samples to compare the samples, and the analysis result shows that the addition of the organic acid has significant effect on suppressing the activity of the microorganism. However, the addition of the sodium acetate serves as a buffer solution to control the pH value in a range suitable for the movement of the microorganism in the composting process. The method can remarkably improve the activity of the microorganism, and is beneficial to accelerating the composting process, shortening the composting period and achieving the amount reduction of organic matters in the composting process.

The invention relates to an irrigation fertilizer special for sauropus androgynous. The irrigation fertilizer is prepared by mixing urea, potassium dihydrogen phosphate, potassium sulfate and strong base to obtain a mixture and adding water for diluting. The irrigation fertilizer is designed according to the physiological characteristics of a sauropus androgynous plant and has high specificity; a buffer solution balance system is introduced, so that a diluted fertilizer solution can always keep in a weakly alkaline state, the content of cadmium in a sauropus androgynous planting land is controlled, the adjustment of acid soil is facilitated, the absorptive amount of cadmium ions by a crop root system is lowered, and the product quality of the sauropus androgynous is enhanced; and the irrigation fertilizer has the characteristics of simple production process, high fertilizer utilization ratio, uniform application, quick plant absorption, high efficiency, remarkable yield increasing effect and the like.

The invention relates to the field of wastewater treatment, and in particular, relates to a biological treatment system for removing pollutants in flue gas desulfurization wastewater, wherein the system comprises a pretreatment unit, a biological treatment unit, a post-treatment unit and a sludge treatment unit; firstly, the desulfurization wastewater is umped to the pretreatment unit for pretreatment through a high-efficiency flocculation coupling softening process; the pretreated water is pumped to a first-stage facultative / second-stage facultative / anaerobic / aerobic biofilm reactor of the biological treatment unit, selenium, ammonia nitrogen and sulfate in the desulfurization wastewater are removed, COD is degraded, biological produced water is discharged into the post-treatment unit foradsorption and interception, biological treatment residues are removed, and up-to-standard discharge is achieved; slurry generated by the process system is completely collected to the sludge treatment unit for treatment. According to the biological treatment system, on the basis of efficient flocculation pretreatment, selenium, ammonia nitrogen and sulfate in the flue gas desulfurization wastewater can be effectively removed through biological treatment and the COD can be effectively degraded through biological treatment, so that the wastewater is discharged after reaching the standard, and no pollution is caused to the environment.

The invention relates to an acidic chemical wastewater pretreating agent and a preparation method thereof, and also relates to application of the pretreating agent in pretreating acidic chemical wastewater before biochemistry. The pretreating agent can well adjust the pH value of the acidic chemical wastewater, and improve the structure of organic pollutants in water bodies and the biodegradability of sewage so as to guarantee the processing effect of subsequent biochemistry.

The invention relates to a compound fertilizer for improving soil and a preparing method thereof. The compound fertilizer comprises, by weight, 4.5-6.5 parts of improved plant ash, 0.2-1.2 parts of bacillus subtilis, 0.2-1.0 part of yeast, 1.0-2.5 parts of shell powder, 0.6-1.8 parts of buckwheat hull, 0.2-3.0 parts of zeolite, 0.3-1.1 parts of anionic polyacrylamide and 0.5-1.0 part of trace elements. The preparing method includes the steps of culturing microbial liquid, spraying the microbial liquid onto the surface of the prepared mixed raw material, and conducting granulating and drying after even mixing to prepare the compound fertilizer. The compound fertilizer is rich in organic carbon and other bioactive substances, the carbon element lost in soil can be rapidly compensated for, the formation of the granular structure of the soil can be promoted, soil caking is broken, and the soil porosity is increased; the soil acid-base buffering system is adjusted, the proliferation and increase of effective microbial communities are promoted, and the absorption and utilization of plant root systems for nutrients are improved; the water permeable and air permeable functions of the soilare enhanced, and the crop rooting is promoted.

The invention provides an ecological anti-seepage partition method for a surface layer of a stocking body, and the method comprises the following steps of: preparing a filling material; filling a gap on the surface layer: jetting the filling material into the gap on the surface layer of the stocking body, so that an ecological filling layer is formed; preparing an anti-seepage partition material; and carrying out anti-seepage partition on the surface layer: evenly jetting and absorbing the anti-seepage partition material on the surface layer of the filled stocking body, so that a flexible anti-seepage partition layer can be formed. The anti-seepage partition method for the surface layer of the acid metal mine solid waste stock dump provided by the invention can be used for ecologically filling and sealing the surface layer of the stocking body, adjusting the pH value of the substance on the surface layer of the stocking body by adding alkaline substances, building a semi-permanent flexible anti-seepage partition layer, effectively reducing the leaching function of the falling water to the solid waste toxic and harmful substance, reducing the risk of secondary pollution, and providing a good base for the follow-up environmental pollution improvement and vegetation recovery.

The invention discloses a preparation method for a compound premix in an egg producing period, belonging to the technical field of feed compositions. Anti-nutritional factors are removed from soybean meal through a compound enzyme preparation containing beta-mannase, beta-dextranase, acid proteinase and phytase, and factors, such as mycotoxin, which is caused by use of a large quantity of corns and affect the intestinal health, can be effectively removed through the yeast cell wall type mycotoxin adsorbent; the pH value of the intestinal tract is effectively adjusted by using stomach invigorating acid. Sawdust prepared by the preparation method disclosed by the invention is soft, is high in cellulose content, and is free from pollution; the intestinal tract does not need to be scraped; the digestion and absorption functions of laying hens can be effectively enhanced, and the bearing function and the water absorption function are high. Due to the scientific application of various comprehensive measure systems, the optimal intestinal tract health states of the laying hens in the egg producing period are guaranteed, the immunity and the disease resistance of the laying hens are enhanced, the maximum laying performance of the laying hens is achieved, the moisture content of excrements is reduced, and the maximum economic benefit of a farm using the premix is obviously improved.

The invention discloses a preparation method of a fondaparinux sodium injection composition. The preparation method comprises the following steps of 1) according to a prescription of the fondaparinuxsodium injection composition, weighing all materials by prescription dosage; 2) taking fondaparinux sodium and sodium chloride, combining, then adding injection water with the weight being 75-85% of the total weight, after stirring and dissolving, adopting a pH regulator to regulate the pH to 5-8, then adding remaining injection water, stirring and mixing uniformly to obtain liquid medicine; 3) filling prepared liquid medicine, and carrying out high-temperature sterilization, cooling, lamp inspection, package and inspection to obtain the fondaparinux sodium injection composition. The fondaparinux sodium injection composition prepared by the invention has the advantages that by optimizing the pH and sterilization process of the fondaparinux sodium injection composition, the obtained solution is good in clarity and conforms to all detection requirements of the injection liquid item in Chinese pharmacopoeia, so that the quality stability of products is greatly improved, the crystallization and the turbidity of the solution are reduced, and the generation of impurities is reduced.

The invention discloses a probiotic solid beverage and a preparation method thereof. The probiotic solid beverage comprises the following raw materials: 50-100 parts of inulin, 12.5-25 parts of maltodextrin, 12.5-25 parts of xylitol, 0.5-2 parts of calcium silicate, 0.2-0.5 part of edible essense, 1-1.8 parts of Lactobacillus acidophilus, 2-3.6 parts of Bifidobacterium lactis, and 1-1.8 parts of Lactobacillus paracasei, and is prepared by adoption of a dry mixing process. According to the probiotic solid beverage, probiotics with different characteristics and different nutrient sources are optimally combined, so that the human body's demand for probiotics under the premise of ensuring the number of probiotics is satisfied.

The invention relates to a soil conditioner, the soil conditioner is cured and molded granules, and the particle size of the granules is 2.0-3.8 mm; raw materials comprise the following components inpercentage by weight: 4% of biological fulvic acid, 5% of quick lime, 15%-18% of caustic calcined magnesite, 10%-12% of calcite powder, 60%-65% of dolomite powder and 1% of potassium humate. The preparation method of the soil conditioner comprises the following steps: (1) uniformly mixing the calcite powder and the dolomite powder to obtain mixed powder; (2) adding 20% of water into the mixed powder to obtain slurry; (3) adding the biological fulvic acid and the potassium humate into the slurry, and uniformly stirring; (4) adding the quick lime and the caustic calcined magnesite into the slurry, and uniformly stirring; (5) granulating when the slurry in the step (4) is self-heated and dehydrated into dry mud; and (6) standing the granular soil conditioner, and carrying out curing molding after secondary heat release to obtain the finished soil conditioner with the particle size of 2.0-3.8 mm.

The invention provides an acidic soil conditioner, a preparation method and application thereof. The acidic soil conditioner is formed by compounding of industrial waste, mineral raw materials and anSE functional material in certain proportion. The SE functional material comprises a glucoamylase treatment substance and amino acid biochar, as well as one or more of alginic acid, polyaspartic acid,polyglutamic acid and potassium fulvate. The acidic soil conditioner provided by the invention can effectively adjust the soil pH value, neutralize free acid, passivate activated aluminum, and solvethe problems of "acidity and toxicity" of soil; being rich in humic acid and organic matters, the acidic soil conditioner can effectively improve soil, restore the granular structure, increase the content of organic matters, and improve the water retention, fertility increasing and breathability of soil; the acidic soil conditioner can improve the rhizosphere soil microenvironment, enhance root activity, and promote nutrient uptake and utilization, also can improve the crop stress resistance and effectively prevent crop premature senescence, thus being a conditioner having the efficacy of improving soil and promoting crop growth.

The invention discloses a bridge deck waterproof material which is prepared from the following components in parts by weight: 10-20 parts of polyurethane with vinyl ether as an end group, 60-70 parts of asphalt, 5-8 parts of 2, 4-diamino-6-diallylamino-1, 3, 5-triazine, 3-5 parts of p-toluenesulfonic acid, 15-25 parts of carboxyl-terminated SBS and 5-10 parts of a functional copolymer. The functional copolymer is a copolymer prepared from allyl pentafluorobenzene, vinyltriethoxysilane, 1-allyl-3-methyl imidazole chloride and allyl glycidyl ether through a copolymerization reaction. The invention further provides a preparation method of the bridge deck waterproof material. The bridge deck waterproof material is remarkable in waterproof effect, good in comprehensive performance, high in bonding strength, good in high-temperature resistance, ageing resistance and performance stability and long in service life.

The invention discloses a farming method for improving a prawn survival rate. The method comprises the following steps: fully airing the pond and disinfecting before releasing young prawns, filtering the water source, and fertilizing water; sprinkling high-efficacy EM and beneficial bacteria shrimp seed health medicines during releasing young prawns, wherein the dosage of the high-efficacy EM and beneficial bacteria shrimp seed health medicines is 1 kg per mu; feeding powdery high nutrient feed three times per day during seedling management, quantitatively feeding in fixed time, and observing the feed and prawn body length condition on the stock table; spreading mixed solution of lactic acid bacterial liquid and photosynthetic bacteria liquid into a culture pond according to a dosage of 10 liters per mu in the prawn farming period, keeping 3-7 days, starting a waterwheel aerator every day, starting on each rainy day for 4-5 hours, and starting the aerator on each sunny day for 2-3 hours. Compared with the prior art, the farming method disclosed by the invention has the advantage that the prawn survival rate is greatly improved.

The invention discloses a method for reducing agglomeration and pulverization of a compound fertilizer and the compound fertilizer prepared by the method. The method comprises the steps that after compound fertilizer raw materials are melted, and alkali lignin or an alkali lignin derivative is added to prepare a mixture slurry; the mixture slurry is used by a granulator to conduct spraying granulation. By adopting the method for reducing the agglomeration and the pulverization of the compound fertilizer, the pH of the compound fertilizer can be effectively adjusted by substituting the alkali lignin or the alkali lignin derivative for commonly used basic ammonium salts and phosphates in granulation process; simultaneously the alkali lignin has very strong hygroscopicity, which can adsorb free water produced by chemical reactions so as to reduce water content in products; the alkali lignin can effectively increase the strength of product granules after cooling and solidification, therebyeffectively solving the problems of the agglomeration and the pulverization of the compound fertilizer during granulation.