摘要
在大田条件下研究了密度、氮肥施用时间、缩节安化控三因素配合对麦套短季棉霜前花率和皮棉产量的影响。结果表明，合理密植、早施氮肥、全程化控三因素的紧密配合是夏棉优质高产的关键。其最佳组合是密度９万～１２万株／公顷，每公顷基施纯氮７５～９０ｋｇ，蕾期、初花期和盛花期各施缩节安１５ｇ、３０ｇ和４５ｇ化控。
A field trial was conducted to investigate the effects of several combinations of theagronomic techniques as plant density,stage of nitrogen application and use of DPC on per-centage of prefrost lint yield and unit yield of summer cotton.It showed that proper density,early application of nitrogen and systematically chemical regulation with DPC were key to qual-ity and lint output of cotton.The optimum density of these three techniques is 90000～120000plants/hm2,application of 75～90kg nitrogen before planting and spraying DPC 15,30 and45g/ha at the stage of squaring ,earing flowering and full flowering ,respectively.
出处
《棉花学报》
CSCD
北大核心
1994年第4期229-231,共3页
Cotton Science
基金
国家计委课题
关键词
密度
氮肥
棉花
小麦
套作
summer cotton,plant density,nitrogen,chemical regulation
