冬春棚（室）一般多数生产黄瓜、西红柿、西葫芦等喜温蔬菜，生产期间常常会遇到连阴、降雨（雪）及强降温等天气而发生冷害，轻则导致叶部发黄减产，重则死亡，使棚（室）菜遭受极大损失。实践经验证明，防止冷害，必须采取提高蔬菜自身适应能力和抗冷害能力，增温补光，改善 Winter spring shed (room) most of the production of cucumber, tomato, zucchini and other warm vegetables, often encountered during the production of Lianyin, rainfall (snow) and strong cooling and other weather and chilling occurs, ranging from yellow leaves lead to reduce production, Heavy death, so shed (room) dishes suffered great losses. Practical experience has proved that to prevent cold damage, we must take to improve their ability to adapt to vegetables and anti-chilling injury, warming fill light, improve