凋萎病植株发病后,叶片变软下垂,叶色淡绿至红色,基部腐烂,最后全株枯死。此病是粉蚧壳虫为害所引起。防治方法:首先严格注意不用病苗繁殖。其次及时扑灭粉蚧壳虫,定植时用500倍乐果溶液浸头,倒置凉干后种植。种后发现粉蚧壳虫为害,及时喷乐果500倍液,或25%中科美铃1500倍液。 After the onset of withered plants, the leaves become soft and drooping, the leaves are light green to red, the base decayed, and finally the whole plant dies. The disease is caused by mealybug insect damage. Prevention and treatment methods: First, pay strict attention to the vaccine does not reproduce. Followed by timely suppression mealybug beetle colonization with 500 times dimethoate immersion head, inverted dry planting. After the species found pest scale pests damage, timely spraying dimethoate 500 times, or 25% of the United States and the United States bell 1500 times.