Since the beginning of summer this year, our city has suffered the most severe drought in the past 60 years. Continuous droughts in summer have caused the total number of drought days in most parts of the city to exceed 50 days, and some areas lasted 70 days. The production and supply of vegetables are greatly affected. The drought and pests and diseases in vegetable production are very obvious. In order to reduce disaster losses, ensure that the supply of vegetables is kept constant, prices do not increase sharply, and people have food to eat, and vegetable farmers increase their incomes. Specifically, the following technical disaster relief measures are proposed. First, strengthen the field management of soil vegetables, extend the harvest period, and increase production. The current focus is to strengthen the field management of vegetables such as rattan, gourd, bitter gourd, pumpkin, autumn eggplant, autumn tomato, autumn cucumber, and autumn cowpea. In response to the current high temperature and drought climate characteristics, the center of management is mainly drought-resistant seedlings, and Timely supplement of available fertilizers, fertilization should be carried out in the morning and evening, so that it can be applied sparingly, and 0.2% potassium dihydrogen phosphate can be applied to foliar fertilization to prevent premature aging and increase late yield. Second, timely change, clean the garden, grab the seed, grab the fast-growing leafy vegetables. High-temperature drought is not only a natural disaster, but also an excellent opportunity for farmers to increase efficiency and farmers' income. Due to the high temperature and drought, and the invasion of pests and diseases, most of the vegetables are in poor growth, especially the melons and vegetables are in decline. Therefore, we must do a good job in a timely manner, clean the garden, grab the seed, rush to broadcast fast-growing vegetables and other work. Make full use of the shade nets to rush to sow cabbage, Chinese cabbage, oil and vegetable, and edible fungus, such as fast-growing leaf vegetables, early autumn lettuce, and white scoop. Use strong, heat-resistant varieties. Chinese cabbage can be used heat-resistant 605, Chinese cabbage picking early-maturing on the 5th, autumn lettuce can use special heat-resistant white skin, Koguang No.1, scoop-white can use Qibaoqing. Third, increase subsidies to ensure urban vegetable supply. In areas with good coastal conditions such as the Yangtze River and the Jialing River, they will be robbed and rushed to sow fast-growing leafy vegetables. Use idle houses or scaffold shade nets to produce sprouts. It is also advisable for families to produce sprouts themselves to solve the shortage of leafy vegetables. Focus on the development of pea seedling production. Fourth, drought protection and seedlings. In the vegetable base should be encouraged to concentrate on drought-resistant autumn vegetables seedlings. Seedlings sowed in autumn, such as cabbage, cauliflower, lettuce, etc., must be promptly irrigated. Irrigation should be carried out in the morning or evening, so that cold and cold water can be poured. For big seedlings such as cabbage, the current lack of water to transplant, it is necessary to control the growth of the seedlings, the first geographical 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒 墒. Fifth, take various measures to prevent drought and protect the land according to local conditions. The first is straw protection. Make full use of straw, weeds, etc. After cutting, evenly cover the rows of crops. The appropriate thickness is 15 cm, which can reduce the soil temperature, effectively reduce the evaporation of soil moisture, increase soil water storage capacity, and play a role in maintaining waterlogging. Fertilizer utilization. Burning crop stalks should be strictly prohibited. The second is shade nets and insect nets to cover security. By making full use of the functions of shading, cooling, pest control and moisture conservation of the two nets (shading nets and insect nets), covering on leafy vegetables and fast-growing vegetables can increase the rate of emergence, rapid growth, resistance to diseases and insects, and good commercial quality. The purpose of listing, increasing production and income. When pest control nets cover the net, they must destroy the remaining underground pests in the shed in order to truly achieve the effect of pest control. The third is cultivating crops. Intertillage can cut off the surface of the soil capillary, inhibit soil moisture transpiration, enhance crop drought resistance. Sixth, strengthen pest control. The year of drought is often a high incidence of pests and diseases. The focus is on melons, Spodoptera litura, beet armyworm, bean pods, aphids, red spiders and other pests. According to the pest information, first take agricultural control. Use biological pesticides or high-efficiency, low-toxic and low-residue counterpart pesticides to keep pests to a minimum. Pay attention to safe medication, use medication in the evening, and strictly control the safety interval of pesticides. The following measures should be taken with emphasis. 1. Vigorously popularize and apply frequency-vibration insecticidal lamps to seduce the adults of insect pests and reduce the number of insects. 2. Manually kill the eggs and often check the fields. If the egg larvae and gregarious young larvae are found, they will be killed manually. 3, due to insects reasonable drug use. Locusts use 1500 times agricultural land music, 10 grams of imidacloprid, and 3% of the fog 3000 times. Anthraquinones were sprayed with 0.15-2000 times of chitosan insects, 1500-2000 times of 15% brooms, and 1500 times of farmland music. Melon was sprayed with 52.25% farmland 1000-1500 times. Spodoptera litura was sprayed with 15% 4000 times spray. Plutella xylostella was sprayed with 5% Ruijin Temu with 20-30 ml, 2.5% vegetable dish with 1000-1500 times, and 5% Cascade with 3000 times. Yellow-fleshed turtles were sprayed with 50% phoxim 500-fold, 2.5% enemies 3,000-fold, and 80% dichlorvos 1000-fold. Spraying should increase the amount of water, uniform, thoughtful, focus on the back of the leaf spray, spray after the morning 6:00-8:00 or after the sun sets. RT-PCR Test Reagent Kit Of COVID-19 RT-PCR detection kits are also divided into conventional liquid kits and lyophilized powder kits. Conventional liquid kits need to be transported in the cold chain throughout the entire process, and cryopreservation is required. 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