塑料大棚内种植蔬菜,在冬春季遇连续晴朗的高温天气时,常常发生氨气中毒。我们在调查时发现,辣椒、番茄、黄瓜对氨气非常敏感,茄子和叶菜次之。据测定,当大棚内空气中的氨气浓度达5毫克/升时,蔬菜就开始受害。氨气通过气孔和水孔进入植物体内,使幼芽和叶片最先受到伤害。受害叶 Growing vegetables in plastic sheds, ammonia poisoning often occurs when the weather is sunny in winter and spring. We found during the investigation, peppers, tomatoes, cucumbers are very sensitive to ammonia, followed by eggplant and leafy vegetables. It has been determined that vegetables begin to suffer when the concentration of ammonia in the air in the greenhouse reaches 5 mg / l. Ammonia enters the plant through the pores and water holes, causing the sprouts and leaves to be harmed first. Injured leaves