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本试验采用五因素二次正交旋转回归设计,对影响地膜棉花产量形成的密度、播期、施氮肥量、化控量及果枝数等五项关键性农艺措施进行了定量化的综合研究。通过3年的研究和多点信息反馈示范试验,建立了地膜棉花产量形成的农艺措施反应模型,确定了最佳农艺措施组合方案。并利用产量反应模型研究了各项农艺措施对产量形成的单独反响以及各项农艺措施间的互作效应。信息反馈示范试验表明,运用优化栽培组合方案其增产幅度大,增收效果显著。
In this study, five factors quadratic orthogonal rotation regression design was used to quantitatively study five key agronomic measures that affect the density, sowing date, amount of nitrogen fertilizer, amount of chemical control and fruiting branches that affect cotton yield. Through three years of research and multi-point information feedback demonstration test, the agronomic response model was established to determine the optimal agronomic measures. The yield response model was used to study the individual responses of the agronomic measures to the yield formation and the interaction effects of agronomic measures. Information feedback demonstration tests show that the use of optimized combination of cultivation programs yield large, significant income gains.