摘要
采用二次通用旋转回归组合设计,建立了中熟大豆86-6242产量与密度、播种期、施磷量、施氮量间的数学模型,经优化分析认为:中熟大豆在贵阳地区中等土壤种植,适宜的农艺措施组合为:密度2.0～2.9万株/亩,播种期4月22日～5月2日,施过磷酸钙34.3～49.4公斤/亩,施尿素20.6～24.0公斤/亩;其中,播种期是影响产量最重要的因索,其次是密度。栽培上应着重注意这两因子的调控。
By means of Quadratic Quadrature/Rotational Regression Combination Design,The Mathematical model of yield of soybean'86-6242'relating to density of crop, sowing season, amount of fertilizer, N. and P. applied has been suggested, The result of analysis of optimization to the model indicate that the rational cultivated technics are density of crop 20000 to 29000 plants/Mu sowing season April, 22 to May,2, amount of calcium superphosphate 34.3 to 49.4 Kg/Mu, amount of urea applied 20.6 to 24.0 Kg/Mu for medium maturing variety cultivated in middle soil fertility in Guiyang. The sowing season is the most important factor for yield among the factors above, and then the density of crop. It must be given more care in cultivation.
出处
《贵州农业科学》
CAS
1991年第6期1-5,共5页
Guizhou Agricultural Sciences
基金
贵州省科学基金
关键词
大豆
产量
密度
播种期
施肥
soybean
yield
mathematical model
cultivated technics
