玉米肥料效应函数建立与应用的研究

Fertilizer Effect Function Construction in Maize and its Application

运用肥料效应函数的常见模式,在玉米中进行肥料效应函数二次成功率的统计分析、对肥料效应函数的不同模型进行选优探讨;研究在肥料效应函数的建立过程中,添加空白产量(N0P0K0)后对肥料效应函数系数和施肥量的影响。结果表明:在符合p<0.05的二次效应函数中,都以一元二次模型拟合成功率最高;在p<0.05且符合报酬递减律的二次效应函数中,基本上是一元二次模型>三元二次模型>二元二次模型。玉米3种肥料效应函数的最优模型都是平方根式;添加空白产量后并没有改变原函数的性质,3种肥料效应函数应添加空白产量后具有相同的变化规律:即常数项b0(基础产量)都有所下降,一次项系数b1和二次项系数b2都有所增加,在产量相同时,添加空白产量的效应模型计算出的施肥量降低。

Using the common model of the fertilizer effect function,the second success rate of the fertilizer effect function were statistically analyzed and studied on different models of selection of the fertilizer effect function in the corn;research on the effects of coefficient and fertilizer rate in the building process of the fertilizer effect functions after adding blank output （N0P0K0）.The results showed that：In the P〈0.05 function in the secondary effect,one- factor model highest success rate,in the P〈0.05 and obeying the reward descending rule, basically,one-factor model〉 three-factor model〉 two- factor model.The optimal model of the fertilizer effect is the square rool for corn.The nature of the original function has not changed after adding a blank yield,they have the same change Laws： the constant term b0 （the basic yield） have decreased, coefficient bl and quadratic coefficient b2 have increased.When the same of output,fertilizer rate is decreased for the model of adding blank output.