摘要
采用五元二次回归设计,对早熟甜荞品种北海道的秋播填茬丰产栽培模式研究表明,北海道秋播填茬的最大生产潜力可达185.5kg/亩;在不影响下料作物小麦的正常播种情况下,最大填茬纯收益可达210.9元/亩。关键技术措施是适期早播,增施氮肥。获得亩产量高于125kg,亩填茬效益比大于50元/Δd的农艺措施组合是7月26～27日播种,亩播量9.50～9.84万粒,亩施纯氮3.76～3.91kg,纯P_2O_55.27～5.59kg,纯K_2O2.65～2.86kg。
Quintic-quadric regression design was used to study the model of high-yielding cul-tivation of the fall-sowing filling crop-early mature and sweet nutrient variety-Hokkaidobuckwheat.Results showed that the maximum production potential of the fall-sowingHokkaido buckwheat reached 185.5 kg/mu.In the case of no effect upon the next crop-normal sowing winter wheat,the maximum net income from the filling crop reached210.9 yuan/mu.The key technical measure is right early sowing and increasing N appli-cation.In this way,per mu yleid can reach as high as 125 kg.The agrotech package ofper mu filling income over 50 yuan/d is to sow Hokkaido buckwheat in July 26～27.Permu seeding rate is 95,000～98,400 grains.Pure N fertilizer 3.76～3.91 kg.pure P_2O_55.27～5.59kg.and pure K_2O2.65～2.86 kg.per mu respectively can be applied.
出处
《干旱地区农业研究》
CSCD
北大核心
1992年第3期38-44,共7页
Agricultural Research in the Arid Areas
关键词
荞麦
秋播
栽培
buckwheat
fall sowing filling crop
effect analysis
