冬季采用塑料大棚栽培的蔬菜经常遇到雨、雪、降温等恶劣天气的侵袭,管理不善往往会造成巨大的经济损失。降雪白天降雪,要盖好苇毛苫,上面再加盖草苫子,雪停后立即清除积雪;夜间降雪,翌晨雪停后及时扫雪,保持覆盖物干燥,并及时揭去覆盖物使秧苗见光。连续阴雪天气而后骤然转晴,揭去覆盖物后要注意观察秧苗变化,发现 In winter vegetables grown in plastic shed often encounter the invasion of the weather such as rain, snow and temperature drop etc. Poor management often leads to huge economic losses. Snowfall during the day and snowfall should be covered with reed hay, grass and ragweed above it, and the snow is cleared immediately after snowfall. Snowfall at night and snowing at the following morning are promptly snowed. Keep the cover dry and promptly remove the covering Let the seedlings see light. Continuous snowy weather and then suddenly sunny, remove the cover should pay attention to observe changes in seedlings and found