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农民朋友在种植西瓜时,有时会发现有的西瓜叶片发黄,这样势必会影响叶片的光合作用,从而影响西瓜的生长。那么造成西瓜叶片发黄的原因是什么呢?经田间调查发现,主要有以下五个方面的原因:一、用肥不当烧根造成的黄叶由于使用了未腐熟的人畜粪,或长期大量使用化肥,造成肥多伤根。有的过多使用叶面肥,由于不少叶面肥中含有激素类物质,造成西瓜激素和微肥中毒,使叶片僵化、褪绿、变脆、畸形、发黄。
Farmers friends in the cultivation of watermelon, and sometimes find some watermelon leaves yellow, it will inevitably affect the photosynthesis of leaves, thus affecting the growth of watermelon. What caused the yellowing of watermelon leaves? What is the reason for the yellowing of watermelon leaves? The field survey found that there are mainly the following five reasons: First, improper use of fertilizer caused by burning yellow leaves due to the use of not decomposed manure, or long-term heavy use Fertilizer, resulting in more fat root injury. Some excessive use of foliar fertilizer, because many foliar contains hormones, causing watermelon hormones and micro-fertilizer poisoning, so that leaves rigid, chlorotic, brittle, deformity, yellow.