粳稻新品种毕粳43移栽密度及氮磷钾配比优化模式  

Optimizing Models of Transplanting Density and NPK Application Ratio for the New Variety of Japonica Rice,Bijing 43

作　　者：余本勋 叶永印 田孟祥 张时龙 何友勋 

机构地区：[1]贵州省毕节市农业科学研究所,贵州毕节551700

出　　处：《湖北农业科学》2013年第21期5129-5132,共4页Hubei Agricultural Sciences

基　　金：贵州省科技成果重点推广计划项目[黔科合成字(2011)5032]

摘　　要：采用二次正交旋转组合设计,以毕粳43高产栽培为目标,以氮肥施用量、氮肥基施比例、磷肥施用量、钾肥施用量及移栽密度为研究对象,建立了毕粳43产量与氮肥施用量、氮肥基施比例、磷肥施用量、钾肥施用量及移栽密度5个因子之间的数学模型,通过模型解析寻优,提出了毕粳43在黔西北特定生态区域内产量超过9 000 kg/hm2的最佳移栽密度及氮磷钾配比优化模式。In order to achieve the high yield of Bijing 43, the relationships between the yield of Bijing 43 and the application rate of N fertilizer, the ratio of base N fertilizer, the application rate of P fertilizer, the application rate of K fertilizer and the transplanting density were studied using the method of dual quadratic rotary regression orthogonal design. Through estab- lishing the corresponding mathematical models, the best combination model between transplanting density and NPK application ratio for achieving the yield of above 9 000 kg / hm2in the specific ecological region in the northwest of Guizhou was proposed.

关 键 词：粳稻新品种毕粳43 移栽密度 氮磷钾配比 优化模式 

分 类 号：S511.22[农业科学—作物学] S506.2