安徽农业科学2017，Vol.45Issue(32)：24-26,3.
水稻秸秆还田下油菜免耕生产力保持技术研究
Productivity Retention Technology of No-tillage Rape with Rice Straw Returned to Field
摘要
Abstract
[Objective] To study the productivity retention technology of no-tillage rape with rice straw returned to field in Jianghuai area.[Method]The cultivation techniques were studied by selecting the cultivars of rape,regulating the sowing density and the dosage of fertilizer.[Result] The selection of fewer branches was convenient for the mechanical harvesting of rape under no-tillage and direct seeding cultivation with rice straw returned to field.Under the same fertilization conditions,the number of effective branches of treatment with 15 × 104 plants/hm2 was 38.96％ higher than that of 24.0 × 104 plants/hm2 treatment.When the sowing density was inereased by 24.0 × 104 plants/hm2,the theoretical output was increased by 81.41％ than that of 15 × 104 plants/hm2 treatment,and the actual yield was 47.44％.In the case of rape sowing density of 24 × 104 plants/hm2,the number of pods per plant and the number of grains per plant were affected by nitrogen amount.The theoretical yield of applying nitrogen 210 kg/hm2 was the highest,reaching 3 671.70 kg/hm2.[Conclusion] Proper regulation of sowing density and the dosage of fertilizer is beneficial to the growth of rape.Appropriate close planting can improve rape production,at the same time,it's convenient for the mechanical harvesting of rape.关键词
稻油轮作/秸秆还田/播种密度/氮肥运筹Key words
Rice-rape rotation/Rice straw returned to field/Sowing density/Nitrogen application分类
农业科技引用本文复制引用
何成芳,朱鸿杰,孔祥强,何彩芬..水稻秸秆还田下油菜免耕生产力保持技术研究[J].安徽农业科学,2017,45(32):24-26,3.基金项目
国家科技支撑计划项目(2007BAD89B10). （2007BAD89B10）
