Continuous-cropping direct-seeding seedling culture method for American ginseng

[0014] 1. Climate characteristics

[0015] Select the suitable regional climate as a humid temperate climate, a mid-cold climate, and a continental monsoon climate. The annual average temperature is 2.0°C to 7.5°C, the average temperature in January is -7°C to -19°C, the average temperature in July to August is 18°C ​​to 24°C, the accumulated temperature ≥10°C is 1900°C to 3100°C, and the annual average precipitation is 500mm to 1000mm , frost-free period 110d ~ 160d.

[0016] 2. Site selection

[0017] It is advisable to choose old ginseng land with aggregate structure, medium fertility, medium loam soil with good ventilation performance, and slope <15°.

[0018] 3. Rest and adjustment

[0019] Deep plowing at the end of April and early May, the depth of rotary plowing is 30cm~40cm, and stones are picked out during plowing, and perilla seeds are planted. 2 ~1200kg / 667m 2 ) into the soil together. Carry out 3 consecutive rotary tillages, the depth is more than 20cm, each...