黑龙港区旱薄地小麦高产栽培综合农艺措施数学模型

采用回归旋转通用组合设计,以田间试验测定的参数,建立黑龙港区旱薄地小麦产量对综合农艺措施反应的五元二次多项式数学模型.并以此模型为基础,借助电子计算机,解析栽培因子的产量效应及其交互作用,统计各项农艺措施取值的概率分布,优选出最佳农艺措施组合方案,为该区旱薄地小麦高产栽培提供了理论依据.

A Mathematical Model of Integrated Agricultural Measures for Wheat High-Yield in Dry and Meagre Land of Heilonggang Area

A model for wheat high-yield cuiltvation in dry and meagre land of Heilonggang area set up with gyrating design not only reveals the yield effect of five agronomic measures, but also can be used to reduce the highest theoretical yield under the testing conditions and provide abundant informations for adopting the best measures of winter wheat production.In these measures the order of five factors of agricultural measures according to their contributions to yield is as follows. P>N>depth of spreading manure>basic seedling populafion per mu>row spacing. As to the cultivating measures for high-yield more attention must be paid to application of fertilizers and depth of spreading manure. Through francy analysis thebest agronomic measures can be worked. If the targets of P is 8.14-8.38kg/mu, targets of N-8.36-9.5kg/mu,depth of spreading manure-16-23cm,basic seedling population-174000-202000 plants/ma,row spacing-16.5-20cm, and other routine cultivation measures, the yield of over 230kg/mu can be achieved.