大豆高产栽培综合农艺措施数学模型的研究

本文是采用旋转设计所做的五因素试验结果,用田间试验测得的参数,建立大豆产量函数模型。使用微型机及我院编制成功的程序包,解析了试验因素的产量效应及其交互作用,并优选了最佳农艺措施组合方案,确定了置信区间,为大豆高产栽培提供了较多的信息。

STUDY ON THE MATHEMATICAL MODEL OF HIGH-YIELD SOYBEAN WITH COMPREHENSIVE CULTURAL PRACTICE

Setting up a model for high-yield plot of soybean with gyrating design not only reveals the yield-effect of five agronomic measures and their alter native effect, but also can be used to deduce the highest theoretical yield under the testing conditions, and provide abundant information for designing the best measure of soybean production.Among synthetic measures, the order of five testing factors of agricultural measures according to their contributions to yield is density>irrigation>phosphate fertilizer>nitrogenous fertilizer>potash fertilizer. As to the cutivating measures of high yield, more attention must be paid to density, distribution, timely irrigation and appropriate application of fertilizers.Searching for the optimization of the model with the computer, we assume that step is one, five factors and five levels are composed of 3125 designs yield in 248 designs reaches more than 500 jin/mu. By francy analysis, the best agronomic measures can be worked out and are listed below: If the manure was more than 7000 jin/mu, organic substances in soil 2.6%, 18000—20000 plants/mu, water—36.5-37.8 ton/mu, urea—9-11 jin/mu, phosphate fertilizer—16-18 jin/mu, potassium sulphate—8-10 jin/mu and other routine cultivating measures, then a yield of over 500 jin/mu could be achieved with cultivar Sueinong No 4.