西昌市高草乡水稻配方施肥“3414”大田试验肥料效应函数分析

通过采用肥料效应函数法原理对试验结果进行回归分析，获得西昌市紫潮砂泥田上水稻产量与氮、磷 、钾肥料效应回归方程模型为Y=6406．46＋23．3105N＋9．317P＋47．5099K～0．07359N^20．01474P^2-0．08069K^2＋0．1159NP-0．09016NK—0．1968PK。在设定的氮磷钾肥料0-3水平范围内符合肥料效应函数法原理的前提下，可求得最高产量施肥量为氮肥（N）167．17kg·hm^-2、磷肥（P2O5）111．45kg·hm^-2、钾肥（K2O）129．21kg·hm^-2,最高产量11271．53kg·hm^-2；最佳经济效益施肥量为氮肥（N）160．27kg·hm^-2、磷肥（P2O5）111．28kg·hm^-2、 钾肥（K2O）113．47kg·hm^-2最佳经济效益施肥量产量11265．85kg·hm^-2。

The Fertilizer Effect Analyses of "3414" Field Experiment about PaddyRice Rational Application of Fertilizers in Gaocao Countryside of Xichang City

Regression analysis of test result has been carried out by adopting the fertilizer effect function to follow principle, the regression equation model about paddy rice output and the nitrogen, phosphorus, potassic fertilizer expect in damp purple grit mud field has been gained. The regression equation mode is Y=6406.46 ＋ 23.3105N ＋ 9.317P ＋ 47.5099K-0.07359N^2-0.01474P^2-0.08069K^2 ＋ 0.1159NP-0.09016NK-0.1968PK. Under the premise according with fertilizer effect function law principle in the setting up range 0-3 about nitrogen phosphorus and potassic fertilizer expects, the gaining result as follows： when the maximal output is 11271.53 kg·hm^- 2, the amounts applying fertilizer are respectively nitrogen fertilizer 167.17 kg·hm^- 2, phosphate fertilizers 111.45 kg·hm^- 2, potassic fertilizers （K2O） 129.21 kg·hm^- 2; when the best economic effect applies fertilizer to nitrogen fertilizer （N） expecting that 160.27 kg·hm^- 2, phosphate fertilizers （P2O5） 111.28 kg·hm^- 2, potassic fertilizers （K2O） 113,47 kg·hm^- 2, the best economic effect applies fertilizer measuring output 11265.85 kg·hm^- 2.