日光温室在冬天不通风，使温室内透气性差．湿度增大，温室里的蔬菜很容易受到有害气体的危害，轻者影响植物生长发育，重者导致蔬菜枯萎死亡．下面介绍几种常见气害与防止方法：1氨和二氧化氮在温室内如果氮肥施用过多，在密闭条件下分解出来的氨气达到5ml／m3，二氧化氮... Sunlight greenhouses are not ventilated in winter, making the greenhouse poorly breathable. Humidity increases, the vegetables in the greenhouse are vulnerable to harmful gases, the light affect the plant growth and development, severe cases lead to vegetable wilt death. Here are some common gas hazards and prevention methods: 1 Ammonia and nitrogen dioxide in the greenhouse if the nitrogen fertilizer is too much, under confined conditions decomposition of ammonia reached 5ml / m3, nitrogen dioxide ...