Sweet potato is damaged by underground pests, it will be covered with insects and insects, can not be processed and eaten, and accelerates decay, resulting in reduced production. It is necessary to take the following two methods to prevent and kill poisons in order to prevent damage and improve production and quality. First, spray Le Siben. During the growth and development of sweet potato, it is necessary to spray 1000 times of Loess solution once every 10-15 days, and evenly spray all the leaves to start the flow of water droplets along the stems and leaves to the roots, and spray 3-5 times continuously. . Rosburn is a highly permeable pesticide that is transmitted to the ground through vines to kill underground pests and protect the underground potato. Second, tea broth. During the rapid expansion of sweet potato, 40-50 times of tea bran aqueous solution is applied every 7-10 days, and continuous application is carried out 2-3 times, each time 10-15 kg per square meter. Tea bran can kill underground pests, and can timely supplement high-quality organic fertilizer, promote the expansion of potato chips and increase starch accumulation. Lipstick,Red Lipstick,Loreal Lipstick,Lipstick Set Guangzhou Lingxue Cosmetics Co., Ltd , https://www.lxgj188.com