摘要
针对目前国内利用多元二项式肥料效应函数确定最高产量施肥量的数学方法存在的问题,依据多元函数的极值理论,结合生产实际,构造了一个既严密又便于应用的利用多元二项式肥料效应函数确定最高产量施肥量的数学模型,同时给出了详细的计算方法和步骤。
The function of polyvariable quadratic showing fertilizer effect has been extensively used in China to determine the optimum fertilizing quantity. In order [to solve the problems appeared in practice, on the basis of mathmatical theory and production practice, a mathmatical model which is accurate and easy to use has been established.This paper explains the model and its usage in detail.
出处
《吉林农业大学学报》
CAS
CSCD
1989年第4期17-20,38,共5页
Journal of Jilin Agricultural University
关键词
施肥
产量
施肥量
数学模型
upper limit, lower limit, optimum fertilizing quantity
