大白菜是秋播蔬菜中种植面积最大,销量最广的一种蔬菜。近年来,由于白菜耕种时间延长,软腐病的发生呈多而重的趋势。白菜软腐病俗称的烂疙瘩、烂葫芦、水烂等,是大白菜的主要病害之一。该病一旦发生,轻者减产10%—20%,重者减产50%以上,甚至绝收。该病在运输、销售、贮藏过程中,亦可发生腐烂,损失极大。一、发病症状白菜软腐病多从包心期开始。起初植株外围叶片在烈日下萎蔫,早晚恢复,随着病情发展外 Chinese cabbage is the largest planting area in autumn sowing vegetables, the most widely sold a vegetable. In recent years, due to prolonged cabbage cultivation, the occurrence of soft rot is more and more heavy trend. Cabbage soft rot commonly known as rotten knots, rotten gourd, rotten water, etc., is one of the major diseases of Chinese cabbage. In the event of the disease, light output reduction of 10% -20%, heavy output reduction of more than 50%, or even absolute. The disease in the transport, sale, storage process, can also occur rot, great loss. First, the symptoms of cabbage soft rot and more from the beginning of the package phase. At the beginning of the plant peripheral leaves wilting in the hot sun, sooner or later recovery, with the progression of the disease