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The efficacy of ciprofloxacin to control leeks is good ------A ciprofloxacin product, ciprofloxacin, is a selective insect growth regulator, which is used to control the development of Diptera and some Coleoptera larvae. There is a strong inhibitory effect. It is mainly used for the prevention and control of the harmful insects (Diptera: Mycophagidae), such as Liriomyza sativae, Liriomyza huidobrensis, Liriomyza trifolii, and leeks, which harm vegetables and legumes, tobacco, flowers, rape, cotton and other economic crops. Onions, garlic roots and so on. Cimetidine has been recognized worldwide due to its low toxicity, low residue, high control efficiency, long duration of efficacy, harmless to natural enemies, humans and livestock, and good environmental compatibility. It has been applied for nearly 20 years in the world and no phytotoxicity report or drug resistance report has been found. It has superiority that other similar products cannot match. It is the preferred drug for the treatment of non-polluted vegetables recommended by the Ministry of Agriculture. We conducted a trial to control leeks with 10% ciprofloxacin suspension in Qingzhou. 1. Pharmaceuticals and methods Test chemicals: 10% ciprofloxacin aqueous suspension (manufactured by Shandong Sanyuan Industry & Trade Co., Ltd.: Lemosia vanillai) Control agent: 48% Lethbone EC (manufactured by Dow Corning USA) 2. There are altogether 5 treatments for the trial treatment, 4 repetitions, 20 plots, and the districts are randomly arranged. Experimental design: 10% ciprofloxacin aqueous suspension 60g/mu 10% ciprofloxacin aqueous suspension 75g/mu 10% ciprofloxacin aqueous suspension 90g/mu 48% Los Pen EC 45g/mu blank control 3. Application The drug method first harvests the leek during the pod production period. After one day, it is sprayed with a high-pressure sprayer along the ridge. The area of ​​each plot is 40m2, and the amount of liquid used is 4.5kg. After 5 days, 10 days and 15 days after drug administration, the number of dead seedlings was investigated and the number of dead seedlings was calculated and the control effect was corrected. 4. Results and analysis Test results: 10% ciprofloxacin suspension concentrate with 75g, 90g has significant control effect on cockroaches, high seedling maintenance rate, and the control effect has been maintained at more than 94% after 15 days, and the seedling maintenance and control effect Better than the control agent 48% Los Pen EC. Field efficacy can be found in the attached table. 5. Summary Through the test results, 10% ciprofloxacin aqueous suspension has good control effect on cockroaches and has a long control period. It is a non-pollution and good product to control chive.