一、高温闷棚 选择晴天的中午密闭大棚(棚内在闷棚前一天浇足水),使温度迅速升至45℃,保持2小时后放风降温。由于病害在高温下不能对黄瓜形成危害,一般闷棚一次,可控制病情8～12天。 二、升温降湿 提高棚内地温和降低棚内湿度,不仅有利于黄瓜生长,而且还能有效地抑制霜霉病的发生。在上午通过密封大棚,使 First, bored at high temperatures Select a clear day at noon closed greenhouse (shed shed in the stuffy shed the day before pouring enough water), the temperature rose rapidly to 45 ℃, to maintain 2 hours after the draft cooling. As the disease can not be harmful to the cucumber at high temperatures, the general bored shed once, the disease can be controlled 8 to 12 days. Second, raising temperature and humidity to improve the shed temperature and reduce shed humidity, not only conducive to the growth of cucumber, but also can effectively inhibit the occurrence of downy mildew. In the morning through the sealed shed, so