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通过二次正交旋转组合试验对N、P、K施用量对苦瓜杂交制种产量的影响进行了研究。结果表明,N、P、K施用量对苦瓜制种产量的影响呈正态分布;在中等肥力土壤条件下,制种获得较高产量的施肥水平为:尿素539.4~486.6 kg/hm2、过磷酸钙847.8~1 027.8kg/hm2、硫酸钾369.75~454.8 kg/hm2。
The effect of N, P and K application rates on the hybrid seed production of bitter melon was studied by quadratic orthogonal rotation combination test. The results showed that the effects of N, P and K application rate on the seed yield of bitter melon were normal distribution. Under moderate soil fertility condition, the higher fertilization levels of seed production were urea 539.4 ~ 486.6 kg / hm2, Calcium 847.8 ~ 1027.8kg / hm2, Potassium sulfate 369.75 ~ 454.8kg / hm2.