摘要
采用三因素五水平通用旋转组合试验设计方法,研究了棉花新品种EK288的种植密度、氮肥和钾肥对产量及主要性状的影响,建立了相应的数学模型,得出3个因素对EK288子棉产量的作用大小为密度>钾肥>氮肥,在-1.682≤x≤1.682水平内,即密度37 500株/hm2,纯N为450 kg/hm2,K2O为298.5kg/hm2,可达最高产量,得出最高产量y=3 087.0 kg/hm2。
The relationships of seed cotton yield and density,nitrogen,potassium fertilizers were studied,and a mathematic model involving the three factors and seed cotton yield was established by using general rotational regression design.The results indicated that under the condition of experimental design,factors affecting seed cotton yield were in such an order as plant density potassium fertilizers nitrogen fertilizers.In the horizontal range of-1.682≤x≤1.682（i.e.plant density was 37 500 ind./hm2,nitrogen fertilizer was 450 kg/hm2,potassium fertilizer was 298.5 kg/hm2）,C111 would be up to the high yield of cotton varieties,and the high yield was 3 087.0 kg/hm2.
出处
《湖北农业科学》
北大核心
2011年第22期4549-4552,共4页
Hubei Agricultural Sciences
基金
国家转基因重大科技专项(2009ZX08005-014B)
湖北省科技攻关计划项目(2006AA201A02)
关键词
棉花
高产高效栽培
密度
氮肥和钾肥
cotton
planting technology of high-yield and high-efficiency
planting density
nitrogen and potassium fertilizers
