摘要
本试验采用二次通用旋转组合回归设计方法,对复种夏播大豆密度、氮磷、钾肥最优化农艺组合问题进行了定量研究,建立了复种大豆产量与种植密度及氮磷、钾肥的反应模式。利用回归模式探讨了亩产100公斤以上的最优农艺措施组合。
The studies were carried out in the multiple cropping of barley and soybean by the method of quadratic rotation design. The quadratic regression equation of soybean yield reflecting planting density and (NH_4)_2HPO_4, K_2SO_4 application was formed. The optimal culture measures to yield more than 100kg/mu include: planting denstity 23750-28250 plants/mu,(NH_4)_2HPO_4 3.85-6.3kg/mu and K_2SO_4 15.50-17. 25kg/mu as seed manure.
出处
《沈阳农业大学学报》
CAS
CSCD
1991年第1期17-20,共4页
Journal of Shenyang Agricultural University
关键词
大豆
复种
高产
栽培
模式
soybean multiple cropping
regression model
optimal culture measures
