一、绵腐病引起的烂果。绵腐病又叫褐色腐败病,主要侵害未成熟的果实。首先在果顶或果肩部出现表面光滑的淡褐色斑,有时长有少量白霉,后逐渐形成同心轮纹状斑,渐变为深褐色,皮下果肉也变褐,后期整个果实腐烂脱落。防治对策:及时摘除病果,带出田外处理;注意整枝,改善田间通风透光条件;发病初期,及时喷洒25％瑞毒霉800～1000倍液、75％百菌 A rotten fruit caused by rotten fruit. Mian rot, also known as brown rot disease, mainly against immature fruit. First, the surface of the top of the fruit or fruit shoulder appeared light brown spots, and sometimes have a small white mold, and then gradually form concentric circular mottled spot, gradient into dark brown, subcutaneous pulp also brown, the late decay of the entire fruit. Prevention and treatment measures: timely removal of disease and fruit, out of the field processing; pay attention to the pruning, improve the field ventilation and light conditions; early onset, timely spraying 25% Thunb mold 800 to 1000 times, 75%