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西瓜“空秧”就是西瓜植株上没有坐住瓜。发生“空秧”的原因主要有: 1.肥水管理不当 西瓜生长期如肥水管理不当,会使植株营养失调,降低坐瓜率。这样的瓜田,要控制氮素化肥使用量,增加磷、钾肥,减少浇水次数,以协调营养生长和生殖生长,提高坐瓜率。对这样的植株,可采用强整枝、深压蔓的办法,控制营养生长。也可在应选留的雌花出现后,隔1—2节捏尖或留5—7节打顶,截留养分向子房集中,达到按要求坐瓜的目的。
Watermelon “empty seedling” watermelon plants are not sitting melon plants. Occurrence of “empty seedling” are the main reasons: 1. Improper management of watermelon watermelon growth stage, such as improper management of fertilizers, will plant malnutrition, reduce the incidence of sitting. Such melon fields, to control the amount of nitrogen fertilizer, increase phosphorus, potash, reducing the number of watering in order to coordinate the vegetative and reproductive growth and improve the curative rate. For such plants, strong pruning can be used, deep vines approach to control vegetative growth. Can also be selected after the emergence of female flowers appear, every 1-2 pinch tip or stay 5-7 topping, to retain nutrients to the ovary concentration, to achieve the purpose of sitting melon as required.