【摘要】 我们在本试验采用五元二次回归正交旋转组合设计的方法,研究了影响麦套中早熟棉高产优质的施肥量、密度、播期、化控量、叶面喷硼5项农艺措施之间的关系,建立了棉花产量形成的栽培措施模型及最佳组合方案。研究表明,本试验条件下5项农艺措施对皮棉产量影响的顺序为密度>化控量>播期>施肥量>叶面喷硼,皮棉产量达到1750kg/hm2最佳栽培组合方案为:施纯N170.7～188.9kg/hm2、P2O585.4～94.5kg/hm2、K2O170.7～188.9kg/hm2,密度3.6万～3.8万株/hm2,4月18日-20日播种,DPC化控量88.1～89.0g/hm2,喷硼砂量937.8～1108.2g/hm2。更多还原

【Abstract】 This experiment adopts orthogonal spinning combined design,rate of fertilizer application,Planting density,sowing date,the concentration of growth regulator and foliar spraying boron,which can all affect the yield of cotton in intercropping wheat with mid-early cotton condition,were studied numerically and synthetically.The cotton-yield simulation model was built up,and the optimal combination of farming practices was obtained.By establishing mathematical model,defined the five factor relation:planting density>the concentration of growth regulator>sowing date>rate of fertilizer application> foliar spraying boron,and achieved 1750 kg/hm2 produetion standard cultivation measure combined:topdressing 170.7 ～188.9 kg/hm2 pure nitrogen,topdressing 85.4 ～94.5 kg/hm2 pure phosphorus,topdressing 170.7～188.9 kg/hm2 pure K2O,planting density 36～38 thousand plant/hm2,includes seeding on 18th～20th in April,Dpc dosage 88.1～89.0 g/hm2,foliar spraying boron dosage 937.8～1108.2 g/hm2.更多还原