Abstract: The experiment was carried out to study the optimum plant density and fertilizer ratio of N,P and K for LiangJian in NingCheng County,ChiFeng City.The result show that the optimum plant density was 2700-3100plants per 667m^2 and the optimum fertilizer ratio was N ：P ：K =40 ：10 ：50.All the results provided theoretical basis for popularizing the corresponding cultivation techniques and industrial development.