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开春以后,油菜进入春发阶段,是搭高产架子的关键时期,加强春季管理,促进春发稳长,非常重要。油菜的春发阶段,从季节上来看,大体在立春～清明之间,由于品种的熟性不同,时间有长有短,一般历时50～60天。这一时期油菜的生育特点,主要是以旺盛的营养生长,积累足够的营养物质,为开花结角奠定基础。特别是现蕾抽苔期间,油菜营养生长和生殖生长同时并进,一
After the spring, rape into the spring stage, is to take a critical period of high yield shelves, strengthen spring management, to promote stable spring, is very important. Rape spring stage, from the season point of view, roughly in the beginning of spring ~ Ching Ming, due to the different varieties, the time is long and short, usually lasted 50 to 60 days. This period rape reproduction characteristics, mainly in the strong vegetative growth, accumulation of adequate nutrients, laid the foundation for the flowering knot. Especially during the budding and bolting, rape vegetative and reproductive growth simultaneously, one