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油菜春后的疯长苗,提早封行,使全田郁闭,薹茎外表粗大,节间拉长,色嫩茎脆,后期易发生“头重腰软脚轻”的现象而成片倒伏,花期拉长,若碰上春寒,蕾花大量脱藩而严重减产。 疯长苗的特征:2月10日苗情观察,主茎叶龄为40片叶的迟熟品种(如秦油2号),若主茎叶龄在25叶以上,单株15竹大叶,苗
Rape seedlings spring soaring seedlings, early seal line, so that the whole field Yu closed, stalk stem appearance coarse, internodal elongation, tender young stem crisp, easy to occur in the late “head weight lumbar spine light” phenomenon into a film lodging, Flowering elongated, if run into the cold spring, a large number of off-fan flower bud and a serious cut. Characteristics of crazy long Miao: February 10 observation of the seedling conditions, the main stem leaf age of 40 leaves of late maturing varieties (such as Qinyou 2), if the main stem leaf age above 25 leaves, 15 large leaves per plant, seedling