摘要
本文采用二次通用旋转组合设计的试验方法,研究了白城地区风沙盐碱土壤米薯间作(薯后复种大豆)的大豆丰产栽培数学模型,得出在本试验条件下,大豆1350～1500kg/hm2产量的决策变量是:密度318000～385500株/hm2,肥料(本季不施肥,均利用前茬余肥)二铵前茬施量94.5～106.5kg/hm2的余肥,硫酸钾前茬施量55.5～78kg/hm2的余肥(二铵和硫酸钾均在前茬马铃薯7500～9000kg/hm2所施用二铵112.5～157.5kg/hm2、硫酸钾76.5～102kg/hm2的量内)。三种主要栽培因素贡献率排序为硫酸钾>二铵>密度。单因素密度、二铵、硫酸钾对产量影响显著,二因素密度与硫酸钾互作显著。
This paper studied a mathematical model of culture in getting bumper soybean intercrop crop and potato, in sand of storm and saline alkali soil in Baicheng region, using quadric universal ratation combining design. The change amounts of strategic decision were desity, 328000~385500 plants/hm2. The fertilizer was not applied in soybean and the residual value of fertilizer in fore-crop was used. The mounts of fertilizer were applicated in fore-crop, diamine and lemery, 94. 5-106. 5Kg, 55. 5-178Kg/hm2 respectively.
出处
《吉林农业大学学报》
CAS
CSCD
1994年第A12期93-96,共4页
Journal of Jilin Agricultural University
基金
国家"八五"攻关课题资助
关键词
间作
大豆
玉米
马铃薯
栽培
Intercrop crop and potato 5 soybean
quadric universal
