温室、大棚由于经常处于密闭状态下进行蔬菜生产,形成了一个内部环境与外部环境有一定差别的小气侯,对蔬菜生产具有良好的作用,但是伴随而来的不足之处是:由于温度较高,有害气体产生容易,且不易逸出,如果不注意加强管理,稍有疏忽就会造成作物有害气体中毒,轻则植株萎蔫,叶片光合性能减弱,品质变劣,产量降低,重则植株死亡,甚至绝收。为了使采用温室、大棚生产者 Greenhouses and greenhouses, as they often produce vegetables under confined conditions, form a microclimate that differs somewhat from the external environment and has a good effect on vegetable production. However, due to the high temperature , Harmful gases are easy to produce and difficult to escape. If we neglect to strengthen management, slight negligence will result in crop poisonous gas poisoning, ranging from plant wilting, weaker photosynthetic performance, worse quality and lower yield, Even absolutely closed. In order to make greenhouses, greenhouses producers