论文部分内容阅读
采用二因素二次饱和最优设计方法 ,对硅钙钾肥作棉花基肥和追肥与产量间的关系进行了研究。结果表明 ,硅钙钾肥对棉花的生长发育有明显的促进作用 ,增产效果显著 ,其中追肥的增产效应高于基肥 ;≥ 150 0 kg/ hm2 皮棉产量的基肥施用量为 799.76～ 112 2 .99kg/ hm2 ,追肥施用量为 755.35～ 886.50 kg/ hm2 。
The optimal design method of two factors and two times of saturation was used to study the relationship between calcium silicate and potassium fertilizer as base fertilizer and top dressing of cotton. The results showed that the calcium silicate and potassium fertilizer significantly promoted the growth and development of cotton, and the yield increase was remarkable. The yield increasing effect of dressing fertilizer was higher than that of basal fertilizer. The basal fertilizer application rate of 150 0 kg / hm2 lint yield was 799.76-112.299kg / hm2, dressing application rate of 755.35 ~ 886.50 kg / hm2.