春季油菜返青后,进入现蕾抽苔期,是营养生长和生殖生长的旺盛时期,也是决定产量的重要关键,因此,应抓紧做好中耕保墒,破除扳结,提高地温,促进油菜生长.对春季旺长油菜,应通过深中耕2～3寸,以切断部分根系,并采取迟浇抽苔水.抑制油菜徒长和过早封行. Spring rape rejuvenation, the bud into the bolting stage, is the vegetative and reproductive growth of the strong period, but also the key to determine the yield, therefore, should pay close attention to cultivating soil moisture, break the tie-knot, raise the ground temperature and promote rape growth. Spring canola, should be deep plowing 2 to 3 inches, in order to cut off part of the root system, and take late pouring moss water, inhibit rape leggy and premature closure.