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Cypermethrin has an inhibitory effect on the photo-decomposition of phoxim, and the combination of the two can improve the stability of phoxim, thereby improving the efficacy. It has the advantages of the two medicines and has a longer duration. It has contact, stomach toxicity and systemic effects on pests. The knock down speed is fast, the toxicity to humans and animals is low, and the residue in the agricultural products after application is low. It is mainly used for the prevention and control of cotton pests. According to the field efficacy test, the 22% cyanogen chloride·phoxim compound method is used for the treatment of cabbage caterpillars, aphids, mirid bugs on vegetables, cotton, fruit trees, corn, rice and other crops. Leafhoppers, cotton bollworms, stem borers, heartworms, and armyworms have significant control effects. It has strong contact killing and stomach poisoning effects on pests, wide insecticidal spectrum, quick effect and quick effect. It can knock down and kill lepidopteran larvae such as cotton bollworm and cabbage caterpillar. It also has good control effect on older larvae.