豆薯,又称地瓜和地萝卜,为一年生缠绕性藤本豆科植物,其肉质块根富含淀粉、糖分和蛋白质,生食当水果,熟食作蔬菜,是果蔬两用作物。豆薯抗逆性较强,但易被地老虎类害虫危害,严重影响其产量与质量,进而影响种植豆薯的经济效益。(一)危害症状危害豆薯的地老虎类害虫主要有小地老虎 Yam bean, also known as sweet potato and radish, is an annual winding vine of legumes, the meaty roots are rich in starch, sugar and protein, raw food as fruits, cooked vegetables, is a dual crop of fruits and vegetables. Toxicity of sweet potato is strong, but it is easily endangered by tiger pests, seriously affecting its yield and quality, thus affecting the economic benefits of planting yam. (A) endangering the symptoms of bean poisoning to the main tiger pests are small tigers