咸宁市双低油菜全程机械化生产技术

从油菜生产的品种选择、大田准备、机械播种、田间管理、机械收获等方面规范了油菜全程机械化生产,其关键技术包括油-稻(油-玉)二熟制地区播种期为9月中旬至10月中旬,油-稻-稻三熟制地区为10月中下旬;播种量为4.5~6.0 kg/hm~2;适宜密度为45万~75万株/hm~2;每公顷施肥量为150~240 kg N,60~90 kg P_2O_5,90~135 kg K_2O,7.5~15.0 kg硼砂,氮肥50%作基肥,磷、钾、硼肥全部作基肥;分段收获在全田油菜全株70%~80%角果变黄时实施,联合收获在全田90%以上油菜角果变黄色或褐色时实施。

Production Technology for Entire Mechanization of Double-low Rapeseed in Xianning City

This article standardized the operations of rapeseed entire mechanization production including variety choosing, field preparation, mechanical seeding, field management,mechanical harvesting etc. The key technology included that the optimum sowing date in double-crop system region with rapeseed-rice or corn was from mid of September to mid of October,and in triple-cropping system region with rapeseed-rice-rice was mid to late of October;seeding rate was 4.5 to 6.0 kg/hm2; the op-timum plant density was 450 000 to 750 000 plant/hm2;150 to 240 kg N fertilizer,60 to 90 kg P2O5 fertilizer, 90 to 135 kg K2O fertilizer and 7.5 to 15.0 kg B fertilizer were used per hectare,50% of N fertilizer and the rest of fertilizer were used as base fertilizer. When 70% to 80% of siliquas per plant were yellow,harvesting by stages could be started; when above 90%of siliquas per plant were yellow or brown, combine harvester could be started.