所谓“早花”是指烤烟大田烟株生长未达到正常的高度和叶片数,而提前现蕾开花的现象。产生“早花”的烟株叶片数锐减至1/2或更多的数量,叶片小而薄,产量和品质显著下降。“早花”是在生长受阻而发育加快的情况下,主茎顶端生长点提早进行花芽分化的结果。因此,必须及时加强预防“早花”的产 The so-called “early flowering” refers to the flue-cured tobacco field tobacco growth does not reach the normal height and the number of leaves, and the phenomenon of budding flowering in advance. The number of leaves of tobacco plants producing “early flowering” dropped sharply to 1/2 or more, the leaves were small and thin, and the yield and quality were significantly reduced. The “early flowering” is the result of early flower bud differentiation at the top of the main stem when the growth is hindered and accelerated. Therefore, we must promptly strengthen the prevention of “early flowering” production