黔北小麦高产栽培数学模型的研究

A study on the mathematical models in the high-yield culture of winter wheat in north of Guizhou

对贵州黔北小麦生产中影响产量较大而双蝗控制的播种量，底氮量，底磷量，春后施氮时间和施氮量等五个因子，采用五因素二次通用旋转组合设计，研究了它们及其交互效应对小麦籽粒产量的影响。

This article selected five important and facile controlling cultural factors-seed density (plantdensity), nitrogen rate applied before sowing, phosphorous fertilization rate before sowing, nitrogen supplying date and nitrogen supplying rate after the Beginning of Spring, and researched their unifactor effects and interactions in the grain yield of winter wheat by means of the multi-quadratic universal rotational compoSition design in North of Guizhou. Based on the data of field experiments conducted, a modelis developed by using mini-computer. According to the modeling acquired, by means of the analyses offrequency,the optimized schemes of agronomic combinations mr 5 625-6 375 kg/hm2 of yield wasscreened by simulation and optimization on computer.