影响棉花化控效果的若干因素及优化组合定量分析

Quantitative analysis of several factors affecting chemically regulativeeffect and their optimum combination on cotton

连续５年田间试验结果分析表明，肥力、密度、控制力度、单株产量均与群体产量正相关，而株宽、中部果枝长与产量负相关。对棉花化控群体产量的正效应：密度＞控制力度＞肥力和单株产量。用相关分析和综合评分法相结合的方法，评价和预测棉花化控产量效应，对生产上应用化控正效应有指导和借鉴作用。

The result of five years' experiments showed that population yield is directly related to fertility,density,control degree and single plant yield, but is negatively related to plant width and length of the middle fruit branch. The order of positive effect on yield of chemical regulation is: density>control degree>fertility and single plant yield.The total mark gained by combinating interrelative analysis with synthetic marking is a good criterion to assessing and estimating positive or negative effect of chemical regulation of cotton yield.