近年来,黑龙江省露地甜瓜主产区,7月中下旬常遇低温连雨或雨后下雾引发露地甜瓜灾害性死秧,即苗期、伸蔓期死秧,结果期死秧,果实接近成熟期死秧。给广大瓜农带来巨大的经济损失。大庆分院科技人员根据多年实践,针对3个时期死秧原因从防病、避病、治病入手提出一套实用综合防治 In recent years, the main producing areas of open-celled melons in Heilongjiang Province often encounter low-temperature continuous rain in the middle and late July or the fogging, which causes the dead calamities of open-celled melons, ie, dead seedlings at seedling stage and extending wintering period, Dead seedlings maturity. To the majority of melons brought huge economic losses. Daqing Branch of science and technology personnel based on many years of practice, in view of the causes of dead seedlings in three periods from disease prevention, avoidance of diseases, treatment put forward a set of practical integrated control