摘要
采用五因素二次回归通用旋转组合设汁方法,研究建立了低酚棉浙棉9号高产综合农艺措施的产量函数模型。经模拟寻优获得了达到1500kg/hm^2皮棉的五项农艺措施优化组合,两年结果平均值是:每公顷密度为46770～47580株,氮肥(纯N)209.7～243.0kg,磷肥(P_2O_5)64.5～68.7kg,钾肥(K_2O)210.9～221.7kg,打顶时期为7月29～8月2日。在金华、兰溪棉区的土壤、气候生态条件下,农艺措施对产量影响的程度依次是:氮肥>钾肥>打顶时期>密度>磷肥。还研究了各项农艺措施对产量的单独效应和交互作用效应趋势。同时进行了小面积的验证示范试验、信息反溃、达到了预期的目标产量。
The method of current rotational and Combinatorial design of quadratic regression with five factors was employed in this study. The functional model of synthetic agronomic measures for Zhemian 9 of pigment glandless cotton yield was established by simulation to seek the optimum ,the optimization combination of agronomic measures of attaining lint yield of 1500 Kg/hm2 or more was found to be planting densities 46770-47580 plants/hm2 ,rate of nitrogen (N ) 209. 7-243. 0 kg/hm2, rate of phosphorus (P2O5) 64. 5-68. 7 kg/hm2,rate of potassium (K2O) 210. 9-221. 7kg/hm2 and date of topping. 29. July to 2. Aug. The single response and interactional effects among the agronomic measures to high yield were also studied, among the five agronomic measures. Rate of N fertilizer ,K fertilizer and date of topping played the most important role in increasing the lint cotton yield. The results of simulation experiment showed the attainment expected.
基金
浙江省"低酚棉系列开发研究项目"
关键词
低酚棉
函数模型
农艺措施
棉花
pigment glandless cotton
functional model
agronomic measure
optimization combination
