1978年群众对我省油菜生产的评价是:“有丰产的长相,没有丰产的产量”。弄清这个原因,对推动我省油菜生产很有意义。以小油菜“门源”为例,出苗至成熟约经历70天时间,它的成熟迟早。主要取决于出苗的早晚。而出苗的早晚,直接影响着苗期的营养生长状况,也直接影响着产量。 In 1978 the masses of our province rapeseed production evaluation is: “a rich appearance, there is no yield yield.” To understand this reason, it is very significant to promote the production of rape in our province. To small rape “door source”, for example, about 70 days from emergence to maturity, its maturation sooner or later. Mainly depends on the emergence of sooner or later. The emergence of sooner or later, a direct impact on vegetative growth at seedling stage, but also directly affect the yield.