灰霉病是危害保护地瓜果蔬菜并造成损失较大的一种病害,病菌直接侵染花器,造成大量落花落果。卢龙县1995年严重发生,造成黄瓜减产30％左右,番茄减产30％～50％,西葫芦减产20％以上。主要原因是农民对此病认识不够,防治意识差,发现病害时病菌已侵染了花器,打药已为时过晚。为此,对棚室灰霉病的预防应引起高度重视。 症状 主要危害花和幼瓜,病菌从开败的花部 Botrytis cinerea is a disease that harms sweet potato fruits and vegetables and causes great loss. Germs directly invade the flowers and cause a lot of flowers and fruits. Lulong County in 1995 a serious occurrence, resulting in about 30% cucumber reduction, tomato cut 30% ~ 50%, zucchini cut more than 20%. The main reason is that farmers do not have enough understanding of the disease, poor awareness of prevention and treatment, and found that the disease has infested the flower germs and the fight for drugs has been too late. To this end, the prevention of Botrytis cinerea should be highly valued. The main symptoms of harm flowers and cucumbers, germs from the defeat of the Department of flowers