Wheat red spider is one of the main pests in wheat production. It punctures wheat sap and leaves small yellow-white spots on the leaves of plants, which exacerbates the loss of water in wheat. The light leaves are chlorotic and yellowish. Firing, severely affect the photosynthesis of wheat, generally reduce production by 10-20%, and severely reduce production by more than 30%. Wheat red spider points wheat round spider and wheat long leg spider. The optimum temperature for wheat spiders is 8-15°C and the optimum humidity is 80%. Therefore, in irrigated and low-lying wheat fields, the optimum temperature for the occurrence of wheat leg spiders is 15-20°C, and the optimum humidity is less than 50%. Most of the Guanzhong Irrigation Districts in our province were Maiyuan spiders. Prevention and control index When wheat has a single line of 1 to 200 feet in length, it should be treated with pesticides in time. Control methods 1. Agricultural control (1) Proper combination of watering and shaking in water can kill large amounts of wheat spider mites. (2) Deep plowing and weeding can eliminate wheat spider mites on soil, grass roots and litter. 2. Chemical control (1) 40% dimethoate EC 800-1000 times evenly sprayed. (2) 15% Daban Ling 800 times liquid evenly fine spray or 15% broom net EC 2000-3000 times, also can use 25% Si Qing 40-50 ml water 45-75 kg evenly spray. Note: It is best to spray at noon during the jointing period. High temperature weather after heading should be sprayed before 10 am and after 4 pm. Gynaecology Products,Cervical Scraper,Disposable Endometrial Cannula,Gynaecological Brush Luck Medical Consumables Co.,LIMITED , https://www.luckmedical.com