冬春大棚蔬菜肥害及防治冬春季节气温低，为了保温，塑料大棚、温室生产常将棚室门窗密闭，致使棚室内温度高湿度大。此时如施肥不当，会使旺盛生长的蔬菜等作物遭受氨和亚硝酸等有害气体危害，使之生长不良，乃至枯萎死亡，严重影响产量。有害气体产生的原因是因棚室内施... Winter and spring greenhouse vegetable fertilizer and control the winter and spring temperatures are low, in order to insulation, plastic greenhouses, greenhouse production often will be closed doors and windows, resulting in shed indoor temperature and humidity. At this moment, improper fertilization at the moment will cause the crops such as vegetables and other vegetables that grow vigorously to suffer from harmful gases such as ammonia and nitrous acid, causing them to grow poorly and even wither and die, seriously affecting the yield. Harmful gases are generated because of the greenhouse ...