Diseases and Insect Pests Prevention Technology of Greenhouse

In the process of tomato growth, the prevention and control of pests and diseases is the key to achieving high yields. Therefore, we must implement pest control in accordance with the principle of “prevention first, comprehensive prevention and control”. Once the disease has been found, it has already caused damage to the crop. Even if it uses even better specific drugs, it will not achieve the desired effect and can only control its continued development. In the following, the diseases that often occur during the tomato cultivation process are listed in chronological order. The purpose is to hope that everyone will master the law of occurrence of the disease and conduct targeted and timely prevention and treatment. Do not passively protect the disease after it occurs. First, the main diseases of tomato in autumn greenhouses and control methods (A) seedling disease prevention methods: 1, seed disinfection: the use of high temperature on the seed processing, killing the surface of the attached pathogens, can effectively solve the problem of seed poisoning. Hot water treatment method: It is divided into two types: warm soup soaking (55°C) and hot water hot soaking (70-75°C). Disinfection effect: Soaking for about 10 minutes at about 55-60°C can kill the fungus; Soaking for about 10 minutes at 60-65°C can kill the bacteria; Soaking for about 10 minutes at about 65-70°C can kill the virus. 2. Seed dressing: Use 2% of the seed amount to seed dressing (1 g for 50 g seeds). 3, chemical control: After emergence with seedling bacteria or green hen second 600-800 times liquid spray. 4. Seedbed disinfection: use carbendazim, anti-virus bacillus or mycobacterial enemy 20 grams of fine soil 50 pounds, mixed with medicine soil, sowing 1/3 bottom, 2/3 cover soil. (B) early blight, virus disease prevention methods: 1, early blight can use imported 70% chlorothalonil 800 times spray. 2. Virus disease is mainly used to remove field weeds, set 30-40 mesh insect nets, and eliminate aphids and whitefly in time. (C) virus disease, leaf mold prevention and control methods: 1, virus disease in addition to control of aphids and whitefly, but also use 5% bacteria poison solution 300 times, 20% poisonous nemesis 500 times spray control, spraying every 7 days Once or 1% potassium permanganate sprayed 3-5 times. 2, leaf mold: 1857 varieties of leaf mold resistance is low, especially in the late growth period, the prevention of the disease should be done, can be sprayed every 7-10 days Ye Ye Ba 800 times . (IV) Methods for controlling late blight and leaf mold: 1. The control of late blight must firstly control the temperature and humidity, reduce the temperature and humidity in the shed as much as possible, and control it at 26-30°C during the day and 20-24°C at night to reduce the temperature of the shed. The shade net can be covered on the shed film. In order to reduce the humidity in the greenhouse, the convection is suspended in the north and south sheds to form convection and the relative humidity is maintained at 60-70%; followed by the chemical control: 72.2% plic water, 72% cyanol, and 64% antimony. Or 72% DuPont Ke Lu 600-800 spray. 2. Leaf mold: In the early stage of the disease, the lower diseased leaves were removed in a timely manner, sprayed with 1:1:200 Bordeaux mixture or leaf mold bacteriophage, or 47% Garethon 600 times solution, and the control was once in 3-5 days. (E) Umbilical rot disease: spraying 0.3% calcium chloride or Green Fenway 3 1000 times from the young fruit stage, once in 5 days, and spray 3-5 times. Second, the occurrence and control of pests: prone to insect pests by aphids, whiteflies, tea aphids, cotton bollworm. Control locusts, whitefly can be set in the greenhouse and ventilation on both sides of the east and west sides 30-40 mesh insect nets, sealing width of 90 cm, the use of pesticides 15% imidacloprid, locusts, Kang Fuduo, poisonous dumplings, Aimele 1000 times liquid spray; 300 times the use of BT emulsion for cotton bollworm or 2.5% deltamethrin, 1000 times spray; Pharmaceutic use of ephedrine No. 3, 1.8% Qishensu EC 1500 -2000 times leaf spray. Third, in the spray should pay attention to several issues: 1, pay attention to scientific and rational use of drugs, delay drug resistance. (1) Avoid single-use drugs for a long period of time and choose new pesticides. Single drug use is easy to produce drug resistance and low efficacy. New varieties can reduce the number of drugs used, reduce production costs, significantly improve the control effect, and slow down the emergence of drug resistance. (2) Grasp the appropriate dosage and concentration of drug solution. Under normal circumstances, the higher the concentration of the drug is, the better the drug efficacy is, but the excessively high concentration of drug causes the drug residue to easily produce phytotoxicity and increase the resistance of the bacteria. (3) Control the frequency of application and master reasonable intervals. Excessive application times and excessive intervals are a major problem in disease prevention and control. General chemical agents are valid for 7-10 days, so it is advisable to use 7-10 days for each interval. The greenhouse tomato application time is 2-3 times per month and no more than 4 times. 2, pay attention to master the key period of disease prevention, so that early prevention. (1) The first critical period is the seedling period. Seedlings during the seedlings are small and their stress resistance is weak and vulnerable to infection by pathogens. A protective fungicide should be sprayed once. Such as chlorothalonil, mancozeb manganese. Make sure the seedlings are not infested. (2) The second critical period is after planting and easing seedlings. After the seedlings are slowly growing, the growth rate of the seedlings is accelerated, and a protective spraying of the early blight occurs. The protective film is formed around the plants to prevent the infection of the bacteria. (3) The third key period is in the young fruit period. After flowering, the results turned from vegetative growth to reproductive growth and vegetative growth. The leaves were poorly nutritious and susceptible to disease. Control should be sprayed in time. (4) The fourth critical period is at the peak of harvest. During the harvesting period, most of the nutrients absorbed by the plants were taken away by the fruits. The disease resistance of the plants was significantly weakened. At the same time, the frequency of watering increased, the humidity in the greenhouse was high, and the disease was easy to develop. Therefore, before the watering, we must first spray and prevent it. At the same time, we must carry out field inspections and find that the central diseased plant is used immediately. 3, pay attention to improve the spraying technology to ensure the quality of medication. (1) spraying should be comprehensive. Spraying should be done without leakage, no heavy spraying, no leakage, no leakage. Spray from the bottom of the plant to the top and spray it evenly. (2) Focus should be taken when spraying. The susceptibility diseases around the central diseased strains should be sprayed, and the upper leaves of the plants must be sprayed with susceptibility to disease. (3) Determine the spraying time. Under normal circumstances, strong light, high temperature, high humidity when the tomato transpiration, respiration, photosynthesis strong, stoma surface stomata opening, is conducive to pharmaceutical access, in addition to humidity and large leaf surface liquid drying speed is slow, easy pharmaceutical Absorb and enhance efficacy. However, when the light is too strong and the temperature is too high, the photolysis or phytotoxicity of the drug may be caused. Therefore, spraying should not be done before and after noon, and the best application time in practice is best when the temperature is 20-25°C at sunny noon and the humidity is 70-75%.

Step one: prepare the ingredients, dried noodles 100g (or wet noodles 150g), chopped green onion, a small bag of the seasoning.

Step two: Wash the green onion, cut into green onion, boil the water and add the prepared noodles.

Step 3: Add boiling water to the pot, add the prepared noodles and cook it in a pot. Add 300-400g of boiling water (better soup) to the bowl and add a small bag of the sauce.

Chongqing Small Noodles Seasoning

Chongqing Small Noodles Seasoning,Chongqing Hotpot Seasoning,Chongqing Small Noodles Sauce,Chongqing Cuisine

ChongQing Baifu Foods Co., Ltd. , http://www.baifufood.com