摘要
本文采用四因素五水平二次旋转回归试验设计测得的参数,建立了以产量为目标的数学模型,通过模拟仿真和频率分析,优选出亩产大于460公斤的农艺组合措施决策方案为:亩施底氮8.49—10.26公斤,底磷(P_2O_5)7.31—9.31公斤,追纯氮1.9—4.03公斤,播量8.39—9.46公斤,其经济最佳投入量为亩施底氮9.25公斤,底磷(P_2O_5)6.92公斤,不追氮,亩播8.81公斤,较频率分析决策方案亩纯增益5.39元。
According to the parameter obtained through guadratic regsresion on the basis of 'four factors' and 'five levels' , the function mathematic model has been established to determine wheat's output. Through the simulation and sieving,and frequency analyses by computer, the agronomic plan for yielding inore than 450kg per mu has been optimally selected, which indudes 8-39-9-46kg seeds per mu, base dressing 8.46-10.26kg pure nitrogen, 7.31-9.31kg P2O5 per mu , topdressing 7.9-4.03kg pure nitrogen per mu.lts optimum economical quantity put into as follow: base' dressing 9-25kg pure nitrogen, 6.92kg P2O5 per mu, no topdressing nitrogen, and 8.81kg seeds. Per mu receipts increased 5-39 yuan compared with another frequency analyses plan.
出处
《河南职业技术师范学院学报》
1990年第1期6-10,共5页
Journal of Henan Vocation-Technical Teachers College
关键词
小麦
高产栽培
回归设计
选优
Wheat, High yield culture, Quadratic regression design
