摘要
采用三因素五水平通用旋转组合设计方法,研究玉米杂交种毕单15号籽粒产量、主要经济性状与种植密度及氮、磷肥施用量间的关系,建立了各因素与玉米籽粒产量的数学模型,通过对模型解析和模拟寻优,获得玉米籽粒产量≥10500kg/hm2的优化栽培方案为:在施有机肥22500kg/hm2的基础上,种植密度56415～66795株/hm2,施N量160.35～229.65kg/hm2,施P2O5量111～159kg/hm2。合理密植,适当增施氮、磷肥,保证单位面积有充足穗数的基础上,增加穗粒数和粒重,对毕单15号高产的实现具有积极促进作用。
Using three-factor five-level universal rotary combination design, we studied relations between grain yield, main economical character of maize hybrid BIDAN 15 and planting density, nitrogen-phosphorus application rate.we also set up mathematics model between every factors and maize grain yield.By simulated test and optimality selection, we put forward cultivation techniques program （maize grain yield 10500kg/hm^2） ：On the basis of 22500kg/hm^2 organic fertilizers, planting density is 56415-66795 stubs/ hm^2, N-application rate is 160.35~229.65kg/hm^2, P2O5-application rate is 111-159kg/hm^2. It showed that rational close planting, increasing spike-length and grain-weight, raising nitrogen-phosphorus application properly, planting enough spikes per unit area all can promote yield of BIDAN 15 actively.
出处
《中国农学通报》
CSCD
2006年第7期243-246,共4页
Chinese Agricultural Science Bulletin
基金
毕节地区"十五"重点科研项目"玉米杂交种选育"[合同号:毕科合计字(2001)-3-1]的部分内容。
关键词
毕单15号
高产
密度
氮磷肥施用量
玉米
BIDAN 15, High yield, Density, Nitrogen-phosphorus application rate
