2月中旬琼海市中原一带由于阴雨、低温的影响，常较大面积发生菠萝凋萎病，发病株率 50％左右，重病园高达 90％。经济损失一般 25％～ 30％。　　菠萝凋萎病又名菠萝根腐病，当地叫“菠萝瘟”，此病在海南、广东、广西、福建及台湾等地均有发生。1症状　　地上部症状表现为发 In mid-February, due to the influence of overcast and low temperature in the central part of Qionghai City, pineapple wilt occurred frequently in large areas. The incidence of the disease was about 50% and that of seriously ill patients was as high as 90%. Economic loss is generally 25% to 30%. Pineapple wilt disease, also known as pineapple root rot, the local called “pineapple disease”, the disease in Hainan, Guangdong, Guangxi, Fujian and Taiwan have occurred. 1 symptoms of the symptoms of the upper part of the hair