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黄瓜霜霉病是对黄瓜生长发育危害最大的世界性病害。通过两年共10个处理的田间对比试验发现,大棚黄瓜霜霉病的发生发展与环境温度条件存在着十分密切的关系,在一定温度范围内(15℃—48℃),棚内日最高气温越高,发病期越晚,病越轻,产量越高。控制方法是:在大棚内日最低气温稳定大于10℃后,每隔一天对大棚进行一次40—47℃、并维持2小时左右的高温处理(其中大于42℃持续1.5小时左右,大于45℃持续1小时左右),然后大面积通风换气。方法简便易行、效果很好。
Cucumber downy mildew cucumber is the world’s most damaging growth and development disease. Through two years of a total of 10 treatments in the field comparison test found that the greenhouse cucumber downy mildew occurrence and development and environmental temperature conditions are closely related, in a certain temperature range (15 ℃ -48 ℃), shed day maximum temperature The higher the incidence of later, the disease is lighter, the higher the yield. The control method is as follows: After the daily minimum temperature in the greenhouse is stable at more than 10 ℃, the greenhouse is subjected to a 40-47 ℃ every other day for 2 hours or so (more than 42 ℃ for about 1.5 hours and more than 45 ℃ for the duration 1 hour), and then large area ventilation. The method is simple and easy, the effect is very good.