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There are many common diseases in protected vegetables, especially in the hot summer, and summer is also the season when vegetables grow vigorously. Therefore, we must pay attention to the prevention and treatment of vegetables in protected areas. Common diseases of protected vegetables include cucumber scab, bacterial angular spot, powdery mildew , downy mildew , gray mold , tomato leaf mold, gray mold, virus disease, etc. Pest-based pests will further aggravate the hazard.
Actively adopt ecological control measures. First, scientifically control temperature and humidity. When the humidity in the shed reaches 90% or more in the morning, it is necessary to release the air for 20 to 30 minutes in a timely manner to reduce the humidity in the shed. In general, when the temperature in the shed exceeds 30 °C, the wind will be released in the morning. When the temperature drops to 25 °C, the air will continue to be released at noon. The temperature will remain at 20~25 °C in the afternoon, and the air will stop at 20 °C, and stay at 15~17 °C at night. Turn on the vents to ventilate. If cucumber downy mildew occurs generally, the development speed is faster, you can take the high temperature shack method to control the disease, but pay attention to control the temperature and humidity, watering before the shack, after the shack, chasing quick-acting fertilizer to supplement nutrition. The second is moderate watering and fertilization. When applying the base fertilizer at the time of planting, organic fertilizer should be applied more, that is, increase production and resist disease. Avoid watering on rainy days. After watering, it should be vented and drained. Control the watering after the onset, should be lightly irrigated, remove the accumulated water in time after rain, and lower the water table. The third is to increase the temperature and temperature. The shed film is aging, the quality is poor, and there is a water droplet film, which affects the light. The drop film should be replaced to increase the light. Wipe and clean the shed film to increase the ventilation and transparency. You can also set the reflective film in the shed or manually set the lamp to supplement the light.
Scientifically carry out chemical control of cucumber disease prevention and control: prevention and treatment of cucumber black spot disease can be used with nicotazole, manganese zinc, Fuxing, Shigao, methyl thiophanate and other agents. For the control of cucumber powdery mildew, acetazol, mycobazole, zinc, DuPont Wanxing, Amishida, Shigao, Fuxing, Dakening, difenoconazole, ether oxystrobin, etc. can also be used, and chlorothalonil dust can also be used. , or sublimation of sulfur powder spray. For the prevention and treatment of cucumber downy mildew , DuPont Klu, Amishida, Yi Bao, Yi Kuai, Kebo, Jinlei, Yinfali, anti-drug, Pulik and other agents can be used. If you encounter rainy weather, you can use 100 Mushroom clearing aerosol. For the control of cucumber gray mold, pyrimethanil, Yibao, Shijiale, Suikeling, chlorhexidine, chlorothalonil, carbendazim, chloramphenicol, carbendazim, and carbendazim can be used. , you can use the Suikeling aerosol spray shed or gram powder spray. Bacterial keratosis can be used to control cucumber bacterial keratosis, amber sulphate, amber, sulphate, sulphate, copper, sulphate, sulphate, bacteriocin, bacteriocin, agricultural streptomycin, new Phytomycin, Bacterium, Longke, plus rice and other pharmaceuticals.
Tomato disease prevention and control: control of tomato leaf mold can be used with benzepazole, Fuxing, Bo-10, anti-mildew, carbendazim, methyl thiophanate, garnipone, pyridine oxazole, etc., or bacteria Smoke cleaner. For the control of tomato gray mold, Yibao, Suikeling, chlorhexidine, anti-mildew, thiabendazole, chloramphenicol, etc. can be used. For the application of smog, you can use serotonin, chlorothalonil and thiabendazole. Smoke agent. For the prevention and treatment of tomato virus disease, it is necessary to prevent and control the field aphids in time, and insecticides such as thiamethoxam, acetamiprid and imidacloprid can be used; amino oligosaccharides can be used before the onset of the disease, and viruses such as virus A and ningnanmycin can be selected in the field. Choosing fungicide manufacturer Nanjing Dr. Bang is a good choice!
Pest Control: Prevention and control of leaf miner should pay attention to the application of only one agent and alternate drug at a time to delay the development of drug resistance. The control period should be carried out before the larvae 2 years old. At the beginning of the prevention and treatment, the drug should be sprayed twice in a row, and the interval between the drugs should be 3 to 5 days to reduce the density of the insects as soon as possible, and then the insect pests should be prevented once every 7 to 10 days. The control agent can be selected from the use of chlortetracycline, catching fast, suppressing Taibao, chlorpyrifos, worms, etc., or AKTEC plus Kungfu. The control of the jumper can be selected from the phoxim poisonous soil or the Amy Lela root, or the Ruidan, the agricultural land, the Haizheng Sanling, Kung Fu and other pharmaceutical sprays.
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