直播是本县油菜的主要种植方法,占常年种植面积18～20万亩的95％左右,油菜籽亩产在100公斤左右徘徊,为探讨稻茬直播油菜亩产250公斤以上栽培技术,在前试验基础上,于1986年进一步进行了高产栽培试验,参试品系是中国农科院油料作物研究所培育的半冬性发育型821,油菜试验田采取 Direct broadcast is the main planting method of rape in this county, accounting for perennial planting area of ​​about 18% to 200000 acres of about 95%, rapeseed yield hovers around 100 kilograms, to explore rice stubble direct seeding per mu 250 kilograms of cultivation techniques, On the basis of experiments, further high-yielding cultivation experiments were carried out in 1986, and the tested strains were semi-winter development type 821 cultivated by Institute of Oil Crops, Chinese Academy of Agricultural Sciences. The rapeseed field