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油菜机直播方式具有省工、高效的特点。为研究成都平原油菜机直播的配套高产栽培技术,试验采用三因素再裂区设计,研究了播种期、播种密度、氮肥水平等机直播关键农艺措施对油菜的生长和产量形成的影响。结果表明,选择在合理的播种期、播种密度、氮肥供应水平下机直播油菜产量构成因子的最佳配置。当播种期为9月30日,播种密度为30株/m2,氮肥供应水平为27 g/m2时机直播油菜产量最高,可达320 g/m2。
Rapeseed live with a provincial labor, efficient features. In order to study the high-yielding cultivation techniques for the direct seeding of rapeseed in Chengdu Plain, three-factor design of the rift zone was conducted to study the effects of key agronomic measures such as sowing date, sowing density and nitrogen fertilizer level on rape growth and yield formation. The results showed that the optimum configuration of yield components of direct seeding rape at reasonable sowing date, seeding density and nitrogen fertilizer supply was selected. When the seeding period was September 30, the sowing density was 30 plants / m2 and the nitrogen supply level was 27 g / m2. The highest yield of direct seeding rape reached 320 g / m2.