1.绵疫病引起的烂果主要危害果实,且多以下部老果较多,发病初期出现水浸状小斑,逐渐扩大产生白色棉絮状菌丝,果实内部变黑,病果极易脱落。病果落地后,遇潮湿全果腐烂产生白霉,最后干缩,成为黑褐色僵果。发病初期,根据病情7～10天喷1次25%百菌清可湿性粉剂500倍液,或65%代森锌可 1 cotton leaf disease caused by rotten fruit is the main hazard fruit, and more in the following part of the old fruit more early onset of flooding-like spots, and gradually expand the white cotton-like hyphae, the fruit dark inside, the disease easily fall off. After the disease fruit landed, the case of white rot caused by decay of the whole fruit wet, and finally dry shrink, become dark brown stiff fruit. Early onset, according to the disease spray 7 times a day 25% chlorothalonil WP 500 times, or 65%