洛阳棉花优化栽培技术研究

Study on Rational Farming Techniques of Cotton in Luoyang

采用二次旋转组合设计对洛阳市春棉进行试验，建立了子棉产量、霜前子棉产量和纯收益等目标函数模型。通过模拟寻优，筛选出了兼顾优质、高产、高效益的优化配套农艺措施为：４月１４日～４月１７日播种，追施纯氮１３５～１８９ｋｇ／ｈｍ￣２，密度４．５～４．８万株／ｈｍ￣２，喷施缩节胺３３～４６．５ｇ／ｈｍ￣２，单株去蕾果枝数２．０～２．５个。并对试验的单因子效应及交互作用进行了分析。

The experiment on Luoyang spring cotton was conducted by using the active-cross-revolution-combination design.The models of unginned cotton yield,prefrostunginned cotton yield and pure income were built on the experiment datum by computersimulation. The rational farming techniques with high yield,fine quality and high efficiencywere as follows:the plant season was April 14～17 , the application of pure N was 135～189 kg/hm￣2,the plant density was 4,5000～4,8000 plant/hm￣2,the spray of Pix was 33～46. 5g/hm￣2,and the dealabastrum fruit hough numbers was 2.0～2.5 number/plant.In ad-dition,the single-factor effects and interaction effects on yield character were also anal-ysed.