摘要
采用四因素五水平二次正交旋转组合设计,研究了密度、氮肥、磷肥和钾肥4种因素对甘薯新品种广薯87鲜薯产量和薯干产量的影响,建立了数学模型。结果表明,4种因素对鲜薯产量和薯干产量的影响顺序相同,均为钾肥>氮肥>密度>磷肥。广薯87要达到鲜薯产量大于52 500.0 kg/hm^2以上的农艺措施:密度73 830~79 920株/hm^2,尿素427.0~490.1 kg/hm^2,过磷酸钙1 267.5~1 732.5 kg/hm^2,硫酸钾1 075.8~1 136.7 kg/hm^2。薯干产量大于15 000.0 kg/hm^2以上的农艺措施:密度65 820~70 980株/hm^2,尿素430.9~482.1 kg/hm^2,过磷酸钙1 314.0~1 686.0 kg/hm^2,硫酸钾1 010.4~1 077.6 kg/hm^2。
The influences of four factors density, nitrogen fertilizer, phosphate fertilizer and potash fertilizer on fresh potato yield and dry yiehl of sweet potato variety Guangshu 87 were studied, and the mathematical model was established, by using quadratic orthogonal rotation combination design of four faetors and five levels. The results showed that the same influences orders of four factors on fresh potato yield and dry yield were potassium〉nitrogen〉density〉phosphate fertilizer. The agronomic measures for Guangshu 87 reached the fresh potato yield greater than 52 500.0 kg/hm2 or more were as follows： density of 73 830-79 920 strains/hm2, urea of 427.0-490.1 kg/hm2, superphosphate of 1 267.5-1 732.5 kg/hm2, potassium sulfate of 1 075.8-1 136.7 kg/hm2. And agronomic measures for Guangshu 87 reached the dry yield of potato above 15 000.0 kg/hm2 were as follows： density of 65 820-70 980 strains/hm2, urea kg/hm2, potassium sulfate 1 010.4-1 077.6 kg/hm2. of 430.9-482.1 kg/hm2, superphosphate of 1 314.0-1 686.0 kg/hm2, potassium sulfate 1 010.4-1 077.6 kg/hm2.
出处
《园艺与种苗》
CAS
2016年第9期20-24,86,共6页
Horticulture & Seed
基金
国家甘薯产业技术体系项目资助(CARS-11-C-13)
关键词
甘薯
广薯87
优化栽培
数学模型
Sweet potato
Guangshu 87
Optinfization euhivation
Mathematical model
