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采用正交回归旋转设计方法,建立了氮、磷、钾肥对大豆脂肪含量的综合作用模型。根据该模型探讨氮、磷、钾肥对大豆脂肪含量影响的规律。氮、磷、钾肥对大豆脂肪含量的单因素效应、二因素互作效应受到其它因素水平的影响。氮肥对脂肪含量的影响均为增加效应,增加速度随着氮肥编码值增高而加快。磷肥和钾肥对脂肪含量的作用有正有负。获得绥农14号大豆品种21.5%以上的脂肪含量,相应的施肥措施为:施N量为0.07~0.13 g/kg,施P2O5量为0.11~0.37 g/kg,施K2O量为0.04~0.10 g/kg,采用这个比例施肥有95%的可能使大豆品种绥农14的脂肪含量高于21.5%。
The orthogonal regression rotation design method was used to establish a comprehensive model for the effects of nitrogen, phosphorus and potassium on soybean fat content. Based on the model, the effects of nitrogen, phosphorus and potassium on soybean fat content were investigated. The single factor effect of nitrogen, phosphorus and potassium fertilizer on the fat content of soybean was influenced by the level of other factors. The effects of nitrogen fertilizer on fat content were all increasing effects, and the increasing speed was accelerated with the increase of coding value of nitrogen fertilizer. The effect of phosphate fertilizer and potassium fertilizer on fat content is positive and negative. The fat content of 21.5% of Suinong No.14 soybean was obtained. The corresponding fertilization measures were as follows: N application rate was 0.07 ~ 0.13 g / kg, P2O5 application rate was 0.11 ~ 0.37 g / kg, K2O application rate was 0.04 ~ 0.10 g / kg, using 95% of the fertilization rate in this proportion may make the soybean variety Suining14 have fat content higher than 21.5%.