1·The serious plant disease problem of pepper results in yield losses, because of its susceptibility to many pathogens, including fungi, bacteria, viruses, and nematodes, et al.
目前栽培的辣椒品种大多极易遭受真菌、细菌、病毒和线虫等侵染而引起严重病害，给辣椒生产造成重大的经济损失。
2·The nematodes that limit sweetpotato production are sweetpotato root-knot and rot-knot nematode. The intergrated methods are used to control the disease in sweetpotato production.
甘薯生产上主要采用综合防治方法进行防治，其中选育抗病品种最为经济有效。