稻茬免耕直播油菜高产栽培技术研究

Research on the High Yield Direct-Seeding Rapeseed Planting Technology in No-Tillage Paddy Field

在江苏省扬州市江都区通过分析不同播期、基本苗密度和施氮水平对油菜产量的影响,以建立稻茬免耕直播油菜高产栽培技术。试验结果表明,稻茬免耕直播油菜在该地区试验条件下,9月30日前后播种、基本苗密度为45万～75万株/hm2(即成熟密度为37.5万～57.0万株/hm2)、施纯氮为270 kg/hm2的条件下有利于获得丰产。

The effects of different sowing date, density and nitrogen level on the yield of rapeseed were studied in the field test conducted in Jiangdu district of Yangzhon city, Jiangsn province to establish high yield direct-seeding rapeseed planting technology in no-tillage paddy field with rice straws. The test result showed the planting conditions of sowing around Sept. 30th, with seedling density of 450 000-750 000 ind./hm2（mature plant density of 375 000-570 000 ind./bin2） and nitrogen dose of 270 kg/hm2, was helpful for obtaining high yield of the direct-seeding rapeseed in no-tillage paddy field.