论文部分内容阅读
本试验采用5因素二次正交旋转回归设计的方法,研究了影响地膜棉花优质高产的密度、播期、追施氮肥量、化控量及果枝数等5项农艺措施之间的关系,获得了中等以上把力的地膜棉田棉花产量形成的函数模型及最佳农艺措施组合方案。在本试验条件下5项农艺措施对产量影响的顺序为密度>化控量>播期>果枝数>迫施氮肥量。另外还研究了各项农艺措施间的交互作用效应。并在试验的基础上,进行了小面积的信息反馈对比示范试验、对比示范结果表明、运用优化栽培组合方案增产幅度大,经济效益显著。
In this study, we used the 5-factor quadratic orthogonal rotation regression design to study the relationship between the five agronomic measures such as density, sowing date, topdressing nitrogen fertilizer amount, The middle and above the force of mulberry cotton field cotton production function model and the best combination of agronomic options. Under the experimental conditions, the order of the five agronomic measures affecting the yield was the density> the amount of chemical control> the sowing time> the number of fruiting branches> the amount of nitrogen fertilizer forcing. In addition, the interaction effects of various agronomic measures were also studied. On the basis of the experiment, a comparative pilot demonstration of small area information feedback was carried out. The comparison and demonstration results show that the yield increase with the optimized combination of cultivation programs is significant and the economic benefits are remarkable.