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春季是油菜营养生长与生殖生长两旺时期,也是油菜一生中吸肥量最多的时期,此期施肥是否合理,对产量有着举足轻重的影响。因
Spring rape vegetative and reproductive growth is booming, but also rape the most fat absorption in the life of the period, fertilization is reasonable during this period, the output has a decisive influence. because