Then to correct spraying scientific medicine. According to the survey cockroach medicine pen, in addition to the production of cotton bollworm eggs in front of the top of the leaves, there is a part of the production in the cotton production in the middle of the back of the blade and the blade. To maximize the efficacy of the drug cockroaches, the whole plant should be sprayed with Bt spray, in order to make all parts of the cotton plant attached eggs are stained with liquid, the liquid is generally 30-50 times per acre with 200 kg can be. Before spraying such as adding a small amount of detergent in the pharmaceutical Wu cockroach drugs or alcohol, to enhance its adhesion, the better. 2. Off pine aphid. Aka off aphid spirit. Efficiency and low toxicity of organophosphate insecticides sticky cockroach medicine, with contact and systemic action. Available at the beginning of melon aphid occurrence EC 1000-1500 times off pine aphid spray. 3. Gifted musicians, too. Aka buprofezin, buprofezin. Drugs, mainly in the stomach, both contact action. Can be used to control aphids, thrips, whiteflies, etc., can also be rid of yellow tea mite. Method, with 25% wettable powder gifted musicians 2000-3000 times spray. Wu large cockroach medicine, Fuzhou Shengwei (certified), cockroach drugs provided by Fuzhou Shengwei Environmental Technology Limited. Environmental Technology Co., Ltd. Fuzhou Shengwei (www.fzsw.com.cn) (http://www.fzsw.com.cn) is Fuzhou, insect terminator leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shengwei leadership in Fuzhou with the staff warmly welcome all inquiries negotiations to create Fuzhou Shengwei a better future. You can also access (http://www.fzsw.com.cn/supply_details_39009712.html), for more information about the company.