西葫芦花打顶指的是茎尖部生长点受阻，“龙头”节间越来越短，不舒展，不再有新的幼叶产生，同时，雌花抱顶，有自封顶的生长趋势。西葫芦发生花打顶现象后会严重影响产量，特别是早期产量，一般可减产30％～40％。据调查：西葫芦产生花打顶的主要原因一是蹲苗过头。蹲苗虽可 Zucchini top refers to the growth of the top of the stem is blocked, “leading” internodes shorter and shorter, not stretch, there are no new leaves to produce, at the same time, the female flowers hold the top, a self-captive growth trend. Zucchini flower top phenomenon will seriously affect the yield, especially in early production, the general reduction of 30% to 40%. According to the survey: the main reason for the flower squash zucchini top one is too squatting seedlings. Although Dunmiao can