雨雪天、寒潮天、连阴天是冬暖大棚蔬菜的三大灾害气象，每年都会出现，轻则减产，重则绝收，严重制约冬暖大棚蔬菜的生产。而实践表明，只要措施得当，这三大灾害是可以减轻或避免的。1雨雪灾害的预防雨雪天气如果出现在白天且已到拉草苦时间，应在下雨雪之前将草苦卷起来，用 Rain and snow, cold days, and even the cloudy winter greenhouse vegetables are three major disaster meteorology, every year there, ranging from light to cut, heavy is absolutely not received, severely restricting the production of winter warm greenhouse vegetables. Practice shows that as long as the measures are properly implemented, these three major disasters can be alleviated or avoided. 1 rain and snow disaster prevention rain and snow weather if it appears in the daytime and has been pulling straw bitter time, should be before the rain and snow will roll up grass with