西瓜是一种既怕旱又怕涝的娇嫩作物,在它的整个生育期中,无论是干旱还是雨涝,都会给西瓜的生长带来极为不利的影响。特别是六月上旬到七月初,正值西瓜营养生长两旺时期,这时的西瓜藤叶、幼瓜不但抗病力低,而且对旱涝极为敏感。据观察,干旱会使西瓜藤细叶狭,抽藤缓慢,长期的干旱 Watermelon is a delicate crop that is both fearful of drought and waterlogging. During its entire growth period, both waterlogging and drought will bring extremely adverse effects on the growth of watermelon. Especially in early June to early July, when the watermelon vegetative growth period, when the watermelon vine leaves, cucumber not only disease resistance is low, but also extremely sensitive to drought and flood. It is observed that the drought will make watermelon vine narrow leaves, rattan slowly, long-term drought