First, the characteristics of damage Radish mantle is a larva of the radish field fly, also known as the root larvae, belonging to the order Diptera and Drosophilidae, and is an important pest of cruciferous vegetables. The worm is a larva, that is, mantle, which penetrates into various cruciferous vegetables, especially the roots of cabbage and radish, causing damage to the underground parts. The above-ground leaves are yellow and wilting, and the light grows poorly, causing serious damage. The plants withered and died. After the root cause of damage, not only reduce the yield and quality of vegetables, but also cause rot, not easy storage and transportation. Second, control methods According to the living habits of radish mantle, the following prevention and control methods are recommended for prevention and control: 1. Agricultural control Apply adequately cooked organic fertilizers, and do a deep and uniform application to reduce the chance of adult spawning. After the radish is harvested, the garden is cleared in time to reduce the source of overwhelming insects and reduce the damage in the coming year. 2. The physical control of adult emergence period, yellow traps in the field to install adult insects, and pay attention to timely replacement. 3. Chemical control In adulthood, 80% dichlorvos emulsifiable concentrate 1500-fold, or 2.5% cypermethrin emulsifiable concentrate 2000-fold, or 50% phoxim-emulsion 1000-fold, or 20% exterolite 3000-fold, may be used. Extermination and killing (21% synergistic cyanoma EC) 4000 times liquid spray control. The larvae can be treated with the method of irrigating the roots with pesticides. When the root locust is found in the field, it can be used with 1.8% abamectin 3000 times, or 75% ciprofloxacin WP 5000 times, or 50% octyl Phosphorus EC 1200 times, or 48% Xin Xin EC (Diziling) 2000 times, etc., are poured along the roots of vegetables. Every 7 to 10 days, 2 or 3 times in succession, can reduce the harm effect. Note: The above agents are preferably used alternately and are stopped for 10 days before harvest. Http:// Fingerprint Safe,Biometric Fingerprint Safe,Portable Fingerprint Safe,Fingerprint Lock Safe Box Ningbo Reliance Security Technology CO.,Ltd , https://www.reliancesafes.com