摘要
研究了免耕直播不同播种期、不同直播密度、不同播种方式对双季稻区早熟油菜产量的影响。结果表明:在江西宜春,早熟油菜免耕直播获得高产的最佳播种期为10月20日左右,适宜直播密度为30万～37.5万株.hm-2,最好的播种方式为免耕撒播,其产量略低于免耕条播和免耕穴播,但能节约成本1500.0～1800.0元.hm-2,提高效益1252.5～1470.0元.hm-2。
The effects of different sowing date,different planting density and different sowing method on high yield of early mature rapeseed were studied in till-less direct seeding way in double-season rice region.The results showed that in Yichun city early mature rapeseed could obtain high yield in till-less direct seeding way.The best sowing date was October 20th or so,the proper planting density was 30×104～37.5×104 plants·hm-2,the best sowing method was no-tillage broadcast sowing.The yield was slightly lower than no-tillage drill sowing and hole sowing.But the cost could be saved 1 500.0～1 800.0 yuan·hm-2,the benefit could be increased 1 252.5～1 470.0 yuan·hm-2.
出处
《天津农业科学》
CAS
2011年第4期42-44,共3页
Tianjin Agricultural Sciences
基金
国家科技支撑计划项目(2010BAD01B11)
关键词
双季稻区
早熟油菜
免耕直播
栽培技术
产量
double-season rice region
early mature rapeseed
no-tillage sowing
culture technique
yield
