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一、合理选地选择不与瓜类、茄果类蔬菜3年以上轮作,地势高、平坦、排灌良好、避风向阳的沙壤土种植。因实行3年以上轮作的地块可避免同类病害发生;地势低洼、土质粘重、地下水位高、光线不足的地块,在低温高湿条件下,猝倒病、立枯病、沤根现象会迅速扩散并发生蔓延。二、种子处理虽然种子带病菌的机率只有0.1～0.5%,但有些病菌在适宜时,几个小时就可以完成侵染,仅几天时间就可以发生一代。可见,在播种前进行种子处理是不能忽略的。常用方法,用干净清水在常温下浸种12小时左右,再换用1%硫酸铜溶液浸5分钟后清洗后催芽。
First, a reasonable choice to choose not with melons, solanaceous vegetables more than 3 years rotation, high terrain, flat, good drainage and irrigation, Shelter sunny sandy loam planting. Due to the implementation of more than 3 years of rotation of the plots to avoid the occurrence of similar diseases; low lying, sticky soil, high water table, lack of light in the land, under low temperature and humidity conditions, damping off disease, blight, Will spread rapidly and spread. Second, the seed treatment Although the probability of seeds with germs only 0.1 to 0.5%, but some germs when appropriate, a few hours to complete the infection, only a few days time can occur generation. Can be seen, before sowing seed treatment can not be ignored. Commonly used method, soaked with clean water at room temperature for about 12 hours, and then replaced with 1% copper sulfate solution soaked for 5 minutes after cleaning germination.