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采用5因子二次正交旋转设计,研究了播期、密度、氮肥、磷肥、钾肥5因素对豫薯10号产量的影响,建立并分析了产量对5因素的函数模型.结果表明,5因素对产量的影响大小依次为播期＞氮肥＞磷肥＞钾肥＞密度.欲达到18万KG/HM2以上的产量,最佳播期为6月23日,在本试验条件下不施氮肥,磷肥施用量75.097?5KG/HM2,钾肥249384KG/HM2,密度为4929059145株/HM2.“,”The quadratic orthogonal rotation design with 5 factors was used to study the effect of seeding date,density,N fertilizer,P fertilizer and K fertilizer on the yield of Yushu 10,and to establish the function model with yield to 5 factors The analysis on this model shows that the order of the effect of 5 factors on yields is as follows:seeding date >N fertilizer>P fertilizer>K fertilizer>density In this test,for getting the yield of over 180t/hm 2,the optimun seeding date is July 23,the appropriate density...