笔者于近2年在直播油菜苗期喷施多效唑,都获得了与在移栽油菜苗期施用相近的良好效果。每株一次有效分枝增加 0.5～1个,荚果增加 40～60个;菌核病发病株率仅1.5％左右,而未施多效唑的病株率达17％～21％;不足300平方米的山坡地油菜收干菜籽分别为50.5公斤与56公斤,比对照增产10％～15％。 The author sprayed the paclobutrazol at the seedling stage of direct seeding rape in the past two years, and achieved good results similar to those applied in transplanting rape seedlings. The effective branching per plant increased by 0.5 ~ 1, the pod increased by 40 ~ 60; the incidence of sclerotinia was only about 1.5%, while that of uniconazole was 17% ~ 21% Hillside rapeseed harvest dried seeds were 50.5 kg and 56 kg, 10% to 15% more yield than the control.