密度、播期、有机肥对棉花产量及部分纤维品质性状的影响

采用正交设计,以青棉1号为试材,研究了密度、播期、有机肥三因素对棉花产量、产值和部分纤维品质性状的影响。在本试验条件下,籽棉的最高产量为4 678.9 kg/hm2,最高净产值为23 383元/hm2,其栽培方案为:密度为44 999株/hm2,播期为5月2日,有机肥用量为6 003 kg/hm2。各栽培因素对棉花可纺性指数有明显的影响,棉花最高可纺性指数为156,与产量和净产值的指标要求相一致。研究建立了三因素对棉花产量、净产值、断裂比强度、可纺性指数影响的数学模型,分析了各因素单独或交互作用对各指标的影响,对指导棉花的优质高产栽培具有较大的指导意义。

Effects of Planting Density, Sowing Date and Organic Fertilizer on Yield and Fibre Quality of Cotton

With Qingmian 1 as material,the effects of plant density,sowing date and organic compost on cotton yield,output value and fiber quality were studied by orthogonal design.The highest yield and net output value were 4 678.9 kg/hm2 and $23 383/hm2 respectively when the cotton was sowed at a plant density of 44 999/ hm2 with an organic manure dosage of 6 003 kg/hm2 on 2nd May.The spinnability index of cotton was affected significantly by the cultivation conditions,and the highest value of spinnability index(156) appeared in the same conditions of highest yield and net output value.The mathematical model was established to describe the effects of the three cultivation factors on yield,net output value,fiber strength and spinnability index of cotton.It is very important for the cultivation of cotton with high yield and good quality.