油菜是长江中下游地区种植的主要农作物之一。海门市油菜常年种植面积在30万～40万亩(1亩=667平方米,下同)之间,单产200千克左右。壮苗是“双低”油菜获得高产的基础,它直接关系到最终能否获得高产。因此培育壮苗是油菜播种与育苗期的中心任务,关键要抓好以下几个方面工作。 Rape is one of the main crops grown in the middle and lower reaches of the Yangtze River. The planting area of ​​perennial rape in Haimen is between 300,000 and 400,000 mu (1 mu = 667 m2, the same below) with a yield of about 200 kg. Strong seedling is “double low ” rape to obtain the basis of high yield, it is directly related to the ultimate availability of high yield. Therefore, nurturing strong seedlings is the rapeseed sowing and nursery center mission, the key should grasp the following aspects of work.