摘要： 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75.0975kg/hm²,钾肥249384kg/hm²,密度为4929059145株/hm²。

关键词: 甘薯豫薯10号, 正交旋转设计, 数学模型, 产量效应分析

Abstract: 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/hm²,the optimun seeding date is July 23,the appropriate density 49290-59145 plants/hm²,the applying amount of P fertilizer 75.0-97.5 kg/hm²,and K fertilizer 249-384 kg/hm²,if applying no N fertilizers.

Key words: Yushu 10, Orthogonal rotation design, Mathematical model, Yield efficiency analysis

中图分类号: 

• S531