摘要
以荣华油6号双低油菜品种为材料,采用4个播期、3种密度两因素随机区组试验设计,研究播期和密度对机直播油菜产量的效应。结果表明：当播期为9月30日,密度为22.5万~30万株/hm2时,机直播油菜产量最高;密度过大,播期过早、过迟均会导致减产,但随着播期的推迟,适当提高密度可增加产量。
To study the effect of sowing date and plant density on yield of mechanical direct seeded rapeseed, a two - factor random configuration experiment was conducted with Ronghuayou No. 6 as material. The results showed that the yield of treatment of sowing on September 30 and 225 000 - 300 000 plants/hm2 was highest. Higher density,later or earlier sowing date would lead to decrease in yield. With the delay of sowing time, raising density could increase the yield.
出处
《作物研究》
2015年第3期246-249,共4页
Crop Research
基金
江苏省农业三新工程项目(SXGC[2013]111)
关键词
油菜
机械直播
播种期
密度
rapeseed
mechanical direct seeded
sowing date
plant density
