摘要
本文采用一元二次回归分析方法,对河套灌区当前的主栽品种春小麦永良4号.在采用两种主要播种工具,两种行距及不同播量下所产生的农田生态效应和产量结果,进行了综合研究,组建了复合优化模型.研究表明,在水肥、品种等条件一致的情况下,种肥分层播种机10厘米行距较15厘米行距和卫立耧10厘米行距更合理地调节了小麦单株营养面积,使个体生长健壮,群体发展合理,提高了土地利用率.这是实现河套灌区200万亩小麦再上新台阶的有效途径之一.
A regression analysis method of one-place quadric was used in the paper. Farmland ecological efficiency and yield result of current staple varieties of spring wheat Yongliang No.4 in the Hetao irrigation areas were studied synthetically,when two kinds of sowing tools and various row spacings (10 cm and 15 cm) and various sowing norms were adopted. Then composite best model was established. Experiment result showed that the seedlings in the farmland sown with the seeder of sowing and fertilizing by layers grew better than that in the farmland sown with Weili driller.
出处
《华北农学报》
CSCD
北大核心
1990年第1期33-39,共7页
Acta Agriculturae Boreali-Sinica
基金
国家自然科学基金资助课题
关键词
春小麦
农田生态效应
优化模型
Spring wheat
Farmland ecological efficiency
Best model
