使用生长素的必要性南瓜的第一朶雌花一般在第十节上下着生,开放的时间要比雄花早一周左右,这样就没有条件传粉授精,保证座果。如果用生长素处理即可代替雄花的作用,而照常结实。南瓜的花是虫媒花,遇上天雨时,昆虫几乎不能飞行,这个过程就无法进行,即使能够免强飞行把花粉带过去,也因为雨水的冲洗使花粉管在伸长之前就被冲走,并且由 The need for the use of auxin Pumpkin’s first female flowers generally in the tenth section up and down, opening time than male flowers about a week earlier, so there is no condition of pollination and insemination, to ensure that the fruit. If the treatment with auxin can replace the role of male flowers, but as usual strong. Pumpkin flowers are insect-shaped flowers, in case of rainy day, insects can hardly fly, the process can not be carried out, even if the flight can be avoided with strong pollen in the past, but also because the rain washed the pollen tube was washed away before elongation, and by