The invention discloses a method for reusing 
saline-alkali waste 
cultivated land to grow plants, comprising the following steps of: (1) digging grooves and holes, ensuring length according to 
terrain, setting slight gradient at the bottom of the grooves, and arranging a water outlet at a lower place; (2) building a 
water discharge groove at the end of the water outlet; (3) digging a water return 
pool at the head of the land, reflowing redundant water in the grooves and holes, and storing the water in the water return 
pool; (4) isolating the 
saline-alkali waste 
cultivated land from the matrix by an agricultural greenhouses film at the bottom and the periphery of the grooves and holes, or paving furnace clinker at the bottom of the grooves and holes, and isolating the periphery of the grooves and holes by the agricultural greenhouses film; (5) the proper matrix has mixture of pearlstone, 
vermiculite and silver sand, mixture of furnace clinker, danty and 
coal ash, mixture of exotic soil and 
straw fermented substrate and exotic soil of the mixture, respectively filling the matrix into the different grooves and holes; (6) applying compound 
fertilizer and 
diamine with fixed quantity before the plants are grown, and topdressing 
urea and 
diamine with fixed quantity at twice at the fruiting period of the plants; (7) irrigating by means of 
trickle irrigation by a 
drip tape; (8) ridging, film paving and growing when the plants are grown; and (9) leading the grooves and holes to have a certain gap, and replacing the surfaces of the grooves and holes with the 
straw fermented substrate, so that the influence of the 
saline alkali to the matrix is reduced.