鄂南地区双低油菜两壮双增大面积丰产技术研究与应用

Study and popularization of high yielding technique for double low rapeseed in southern parts of Hubei province

１９９６～１９９８ 年研究鄂南地区双低油菜两壮、双增大面积丰产技术，即冬前壮根，春后壮秆，冬前增叶，春后增角和采用四早（早育苗、早移栽、早管理、早施蕾薹肥），三增（增肥、增硼、增密度），两防（防渍害、防菌核病）。应用面积１．０７ 万公顷，平均单产１６１２．５ｋｇ／ｈｍ ２，比常规技术增产１８０ｋｇ／ｈｍ ２ ，增产１２．６％

A high yielding technique for double low rapeseed in large area was studied in southern parts of Hubei province from 1996 to 1998. The technique was named two strength and two increase which meant strengthening roots before winter, strengthening stems in spring, increasing leaves before winter, increasing pods after spring. By use of the technique in 10.7 thousand hectares, the avarage yield reached 1612.5kg/ha, which was improved 180kg/ha (12.6%) compared with common technique.