春季，采用塑料大棚栽培的蔬菜，常遇到阴、冷、风、雪、雨等恶劣天气的侵袭，一旦管理不善往往会造成较大经济损失。一、阴冷天气早春，遇到持续低温寒流天气，苇毛苫、草苫子等覆盖物要适当晚揭。揭苫后要注意畦温变化，如果畦温稍有下降，应随揭随盖；畦温稍有回升，可... In spring, vegetables grown in plastic shed often encounter adverse weather such as overcast, cold, wind, snow and rain. Once poorly managed, they often cause great economic losses. First, the cold weather Early spring, encountered continuous cold weather, reed hair, grass 苫 son and other coverings should be properly exposed. After revealing the 畦 temperature changes, if the temperature drops slightly, should be exposed with the lid; 畦 temperature slightly picked up, ...