钾肥和密度对淮北地区高品质棉产量及品质的效应研究

为了研究钾肥和密度对淮北地区棉花产量与品质的影响，2006--2007年我们连续两年做了棉花的栽培试验，采用二次饱和D—最优设计方法，探讨了钾肥和密度对棉花的产量、纤维长度及断裂值的效应，建立了综合效应方程。研究结果: 钾肥和密度对于籽棉和皮棉产量都是正效应，钾肥和密度的互作对籽棉及皮棉也都是正效应，皮棉和籽棉产量都最高时的施氧化钾范围400.2 kg/hm2--409.0 kg/hm2，种植密度范围是36136株/hm2--37973株/hm2；棉花纤维长度和断裂值的效应方程反映，钾肥和密度对两种品质指标都是正效应，绒长的钾肥的效应大于密度，断裂值的密度效应大于钾肥；纤维品质最优时的施氧化钾范围是315.5 kg/hm2--367.7 kg/hm2，密度范围是25569株/hm2--26229株/hm2。

Effect Research of Potassium Fertilizer and Density to Huaibei area Cotton Yield and Quality

In order to study the density of potassium and Huaibei area of cotton yield and quality of 2006-2007, we made two years in a row of cotton cultivation test using the second saturated D-optimal design, to explore the density and fertilizer on cotton The production, and fiber length of the rupture of the value of the effect of the combined effect of the establishment of the equation.The results：The density of potash fertilizer and seed cotton lint production and both are related ，K and density of seed cotton and lint against each other is also a positive effect， Lint and seed cotton production are the highest range of facilities potassium 400.2 kg/hm2--409.0 kg/hm2, the scope of planting density is 36,136 / hm2 - 37973 strain / hm2; Cotton fiber length and fracture values reflect the effects of equation, potash fertilizer and density of the two types of quality indicators are positive effect, cashmere long the effect of potash fertilizer is greater than the density, fracture density effect is greater than the value of potash; fiber length highest Shi Potassium is the scope of 315.5 kg/hm2--367.7 kg/hm2, the density of 25,569 / hm2 - 26229 strain / hm2。