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为探明江淮地区稻-油两熟制度下油菜免耕直播高产栽培技术。以核油56为材料,采用田间裂区试验,比较3种施氮水平和4种播种密度对江淮稻田免耕机开沟直播栽培油菜的产量构成、农艺形状以及生物学产量、秸秆系数等的影响。结果表明,在较低密度和中等密度条件下,增施氮肥有利于生物学产量和经济产量的提
High-yielding cultivation techniques of no-tillage direct seeding rape in order to explore the system of rice-oil double cropping in Jianghuai region. Taking the kernel oil 56 as material, field split zone experiment was conducted to compare the yield components, agronomic shape, biological yield and straw coefficient of direct seeding rape with no-tillage machine in Jianghuai rice paddy by comparing three nitrogen levels and four planting densities influences. The results showed that under the conditions of lower density and medium density, the application of nitrogen fertilizer was beneficial to the biological yield and economic yield