摘要： 采用四因子二次回归正交旋转组合设计，利用计算机对试验数据分析，建立了籽棉产量、亩成铃数学模型。筛选出麦套夏棉高产优质的综合栽培措施为：密度8340～8650株/亩，单株留果枝6个，亩喷施缩节安4.34～4.96g,亩施纯氮8.03～9.00kg、纯磷2.68～3.01kg.四因子对籽棉产量影响的顺序：单株留果枝数>种植密度>喷施缩节安量>施氮、磷肥量；影响的效应均呈开口向下的抛物线形，互作效应没有达到显着水平。根据亩成铃模型解析：种植密度和单株留枝数对亩成铃的效应是开口向下的抛物线形；喷施缩节安和施氮、磷肥对亩成铃的效应呈开口向上的抛物线形。四项栽培措施对棉纤维品质的影响不明显。

关键词: 麦套夏棉, 籽棉产量, 纤维品质, 成铃数, 数学模型

Abstract: According to the parameters obtained from experimental figures,a established to determine the raw cotton yield and cotton boll numbers per mathematical mu. Through the simulation and sieving,a comprehensive cultivating method had been taken to reach a high yield,top quality cotton,that includes growing density of 8340-8650 plants per mu, saving 6fruit branches, spraying 4.34-4.96g mepiguat chloride per mu, applying 8.03-9.OOkg nitrogen,2.68-3.Olkg pentoxide per mu. After analysing the model of yield,the sequence of effectiveness of four factors on raw cotton yield is:numbers of fruit branch> growing density> spraying mepiguat chloride>quantity of nitrogen and pentoxide applied. The shape of effectiveness diagram is a negative parabola. The complementary effectiveness is in significant. Through analysing the model of cotton boll mumbers per mu,a conclusion is reached; the effectiveness of cotton growing density and numbers of fruit branch on cotton boll numbers is negative parabola,however,that of spraying mepiguat chloride and quantity of nitrogen and phosphorus applied is positive parabola. In the meantime,analysis of cotton fibre quality confirmed that the influences of all four cultivating factors on cotton fibre quality are insignificant.

Key words: Interplanting summer cotton with wheat, Raw cotton yield, Fibre quality, Cotton boll numbers, Mathematical model

中图分类号: 

• S562