摘要
[目的]研究多效唑在免耕直播油菜上的应用效果。[方法]分别设置0、50、100、150、200mg/kg共5个浓度多效唑处理进行不同浓度喷施试验,分别设置3叶期、5叶期、7叶期喷施及空白对照共4个处理进行不同时期喷施试验。[结果]喷施多效唑能培育壮苗、改善株型结构和产量性状,能有效解决因密度较大而形成的群体生态状况变化及分枝节位过高等问题,增产幅度可达29.93%。[结论]免耕直播油菜苗期喷施多效唑具有显著的增产效果。在3～5叶期以100～150mg/kg多效唑药液叶面喷施为宜。
[ Objective ] The purpose of this research was to study application effect of spraying MET on no-tillage direct seeding rape. [ Method ] Concentration treatments containing 0, 50, 100, 150 and 200 mg/kg were made for different concentration. Periods treatments of 3 leaf stage, 5 leaf stage, 7 leaf stage and ck were made for different period on no- tillage direct seeding. [ Result] Spraying MET could breed sound seedling, improve plant-type structure and yield traits, as well as figure out the problems of the changes of colony zoology status and branches overtopping because of large density, the output could be improved by 29.93%. [ Conclusion] Spraying MET on no-tillage direct seeding rape had significant effect on increase of productivity. EMT should be sprayed 100-150 mg/kg during 3-5 leave stage.
出处
《安徽农业科学》
CAS
北大核心
2009年第34期16803-16805,共3页
Journal of Anhui Agricultural Sciences
关键词
免耕直播
油菜
多效唑
No-tillage direct seeding
Rape
MET
