摘要
在超高产栽培条件下 ,对冬小麦氮肥后移技术进行了研究。结果表明 ,在超高产条件下氮肥后移技术能进一步改善群体与个体的矛盾 ,确立合理的群体结构 ,延缓小麦的衰老 ,显著提高穗粒数和粒重 ,使生物产量与经济系数同步提高 ,从而稳定获得每公顷 750
The technique of N application at later growth stage was studied under the condition of super-high yield cultivation. The results showed that technique of N application at later growing stage resulted in improvment the contradiction between plant population and single plant under the condition of supper-high yield cultivation, defining rational population structure, postponing wheat decrepitude,inreasing grain number per ear and grain weigh sinificantly, improving biological yield and economic coefficient synchronized and gaining 7 500kg/hm 2 grain yield.
出处
《山西农业科学》
2001年第2期26-28,共3页
Journal of Shanxi Agricultural Sciences
基金
"九五"山西省科委重点科技攻关项目 !( 9810 0 9)的部分内容
关键词
冬小麦
氮肥后移
超高产栽培
群体结构
氮肥运筹
Winter wheat
N application at later growing stage
Super-high yield cultivation
Wheat decrepitude
