Greenhouse greenhouse vegetables are produced in the deep winter season, often outside the shed, ice and snow, spring flowers in the shed. In recent days, with the entering of deep winter season, cloudy snow weather is unavoidable, and the external temperature has dropped sharply, which will bring certain obstacles to the greenhouse vegetable production. The vegetable farmers should promptly take preventive measures to reduce the damage.
First, freezing injury and other physiological diseases: When encountering continuous rain and snow weather pressure sheds, the old membrane cover should be used in time for waterproofing; or take temporary warming measures, fluorescent lighting, every 810 meters to install a 40-watt light bulb When the shed is near 5°C, turn on the lights. When the plants have slight frost damage, they can be sprayed with growth regulators such as brassin to ease.
Second, gray mold: In case of cloudy days or rain and snow weather, smoke agents should be used to prevent, such as chlorothalonil, fast-king. Can also be used 10% Shidi water dispersant 1500 times, 40% Shijiale suspending agent 800-1200 times alternating spray. When working in the field, you should also pay attention to clearing the disease.
Third, the epidemic disease: in the early stages of drug use, available 69% Anke manganese 600 times, 5-6 days 1, once every 2-3 times. Can also choose to use 10% Kejia 1500-2000 times fluid 2-3 times. Found that the central disease strain should be removed in a timely manner, brought to the deep burial, and disinfected with lime in the diseased hole.
Fourth, leaf mold: Smoke can be used to prevent the use of 45% chlorothalonil 250-300 grams. Can also be used 10% of the world's high water dispersible granules 1000 times, 2% Wuyimycin water 150 times, 40% Fuxing 6000 times spray, pay attention to the leaves when spraying medicine, 7-10 days 1, once every 3-4 times.
5. Powdery mildew: Spray protection plants before the onset of disease, can be used 27% lipid membrane 80 times or 80% chitin 6000 times; in the early onset can be used 10% of the world's high 1500 times, 40% Fuxing 8000 times EC Liquid, 12.5% ​​Xiansheng 500 times spray, pay attention to interval 5-10 days rotation medication, continuous control 2-3 times.
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