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我省七月份是多雨季节,对西瓜生长十分不利,有时一场暴雨过后,形成高温多湿的气候环境,引起瓜地严重发病。如出现暴发性真菌病害。这种病害发生后,由点到面蔓延,几天内就可以造成瓜田茎叶一片焦黄,所以重视病虫害的防治,了解病虫害发生规律,掌握病虫害活动周期的薄弱环节,把病虫害消灭在萌芽状态,对保证西瓜稳产高产是十分重要的。
July is a rainy season in our province, the growth of watermelon is very unfavorable, and sometimes after a heavy rain, the formation of high temperature and humidity of the climate, causing a serious incidence of melons. In case of fulminant fungal disease. After the occurrence of this disease, it spreads from the point to the surface and can cause the stem and leaves of the melon field to be yellow within a few days. Therefore, attention should be paid to the prevention and control of pests and diseases, the rules of occurrence of pests and diseases, the weaknesses of pests and diseases cycles, the elimination of pests and diseases, It is very important to ensure stable and high yield of watermelon.