摘要
连续3年多点试验表明,在土壤基础肥力较高的条件下,适当减少拔节以前的氮肥用量,一般不会影响成穗数;在雌雄蕊分化至药隔期追施氮肥并配合浇水,不仅不会加重倒伏和青干,而且可以显著改善群体质量,提高分蘖成穗率,成穗整齐,不贪青晚熟,穗粒重和产量显著提高。
The experiments in more siles in 1991~1994 showed that,under the higher fertility soil,reducing properly the applying amount of N fertilizer before jointing stage couldn't effect ear number.Top applieation of N fertilizer combined with irrigation from mid late jointing to heading stage decreased the lodging and wilting degree,improve the plant population structure obviously,increase the grain weight per ear and yield significantly.
出处
《河南农业科学》
CSCD
1998年第3期3-7,14,共6页
Journal of Henan Agricultural Sciences
关键词
小麦
前氮后移
群体质量
穗粒重
产量
土壤肥力
Wheat N application at late growth Population quality Grain weight per ear Yield