俗话说:“春菜猛如虎”。开春以后,随着温度的逐步升高和雨水增多,油菜进入旺长阶段。2月底至3月初开始现蕾抽苔,3月中旬至4月上旬开花,需肥需水达高峰期。因此,春季是促进油菜春发稳长,争取苔壮枝多,根强花多,搭好丰产架子,是夺取高产的关键时期。 As the saying goes: “Spring vegetables Mengru tiger.” After the spring, with the gradual increase in temperature and rainfall, rape into the wang stage. From the end of February to early March, it begins to bloom and moss. From mid-March to early April, it takes fertilizer and water to peak. Therefore, the spring is to promote the stability of the rape spring hair, strong branches for the moss, strong roots and more, set a good yield shelves, is to capture a critical period of high yield.