As the temperature gradually rises, the conditions of temperature and humidity will be conducive to the occurrence of diseases such as gray mold, downy mildew, sclerotinia, aphids, and whiteflies in protected areas and open fields. These pests and diseases will enter the beginning to the end of March. During the period of production, attention should be paid to monitoring during production, and prevention and control should be carried out in a timely manner to control the hazards.
Botrytis cinerea is a major disease on tomatoes in protected fields, and mainly damages the leaves and young fruits. At present, tomatoes have entered the flowering period, and in the middle and late March, the disease will enter the onset of the disease. Downy mildew is a common disease on lettuce and spinach in spring protected areas and open fields. Sclerotinia mainly damages lettuce, lettuce, and solanaceous and melon crops, causing lettuce and lettuce to rot at the base and losing their commercial properties. This poses a certain threat to the normal growth of solanaceous and melon crops. Bemisia tabaci is one of the main pests on eggplant and pepper in spring. The annual outbreak period is from mid-late May to mid-June, and the degree of occurrence is closely related to the previous base and winter-spring climate conditions. The locust spring is mainly harmful to beans, cruciferous plants, solanaceous vegetables, melons and other vegetables. It occurs earlier than other crops on broad beans and begins to appear on the broad beans in early March of the year. As the temperature rises, the amount of maggots will gradually increase. .
In terms of production, field management should be strengthened and agricultural control should be emphasized. Pay attention to cold-proof and heat-retaining for the eggplant vegetables in the protected area, increase the temperature during the day, use the sunny days for ventilation and dehumidification, avoid heavy smashing, deepen the soil, and improve the crop growth environment; remove diseased plants and weak seedlings during transplanting; The local solanaceous vegetables timely remove diseased leaves and diseased fruits to reduce the source of bacteria; open ground vegetables should be well equipped with ditch systems to prevent waterlogging and damage caused by continuous rainy weather.
At the same time, we will do a good job in the prevention and control of pharmaceuticals. We will focus on prevention and control of gray mold and downy mildew in terms of diseases. The pests are mainly whitefly and aphids. Gray mold can be used 50% procymidone wettable powder, 50% iprodione wettable powder, 40% pyrimethanil suspension, 50% boscalid water dispersible granules, 50% pyraclo-urea water Dispersible granules such as water spray control. Downy mildew may use 58% methadone WP, 72% urea manganese zinc wettable powder, anti-virus phlegm 64%? MF Mn Zn wettable powder, 50% enoylmorpholine wettable powder and other water spray For prevention and treatment, 80% mancozeb WP can be sprayed with water before the onset of vegetable growth. Sclerotinia can be used 50% procymidone wettable powder, 50% iprodione wettable powder, 50% bovismicin water dispersible granules, 70% thiophanate-methyl wettable powder, 50% carbendazim Wettable powder and other water spray control. For control of whiteflies and aphids, 70% acetamiprid wettable powder, 70% imidacloprid wettable powder, 50% nitenpyrazine-soluble powder, etc. can be used for water spray, which can be combined with disease prevention in the seedbed or after transplanting. At the same time, yellow plates were hung in the field for baiting, and 30 yellow plates were suspended per acre. Pay attention to alternate medication, stop the medication 7 to 10 days before harvest to avoid excessive pesticide residues.
Botrytis cinerea is a major disease on tomatoes in protected fields, and mainly damages the leaves and young fruits. At present, tomatoes have entered the flowering period, and in the middle and late March, the disease will enter the onset of the disease. Downy mildew is a common disease on lettuce and spinach in spring protected areas and open fields. Sclerotinia mainly damages lettuce, lettuce, and solanaceous and melon crops, causing lettuce and lettuce to rot at the base and losing their commercial properties. This poses a certain threat to the normal growth of solanaceous and melon crops. Bemisia tabaci is one of the main pests on eggplant and pepper in spring. The annual outbreak period is from mid-late May to mid-June, and the degree of occurrence is closely related to the previous base and winter-spring climate conditions. The locust spring is mainly harmful to beans, cruciferous plants, solanaceous vegetables, melons and other vegetables. It occurs earlier than other crops on broad beans and begins to appear on the broad beans in early March of the year. As the temperature rises, the amount of maggots will gradually increase. .
In terms of production, field management should be strengthened and agricultural control should be emphasized. Pay attention to cold-proof and heat-retaining for the eggplant vegetables in the protected area, increase the temperature during the day, use the sunny days for ventilation and dehumidification, avoid heavy smashing, deepen the soil, and improve the crop growth environment; remove diseased plants and weak seedlings during transplanting; The local solanaceous vegetables timely remove diseased leaves and diseased fruits to reduce the source of bacteria; open ground vegetables should be well equipped with ditch systems to prevent waterlogging and damage caused by continuous rainy weather.
At the same time, we will do a good job in the prevention and control of pharmaceuticals. We will focus on prevention and control of gray mold and downy mildew in terms of diseases. The pests are mainly whitefly and aphids. Gray mold can be used 50% procymidone wettable powder, 50% iprodione wettable powder, 40% pyrimethanil suspension, 50% boscalid water dispersible granules, 50% pyraclo-urea water Dispersible granules such as water spray control. Downy mildew may use 58% methadone WP, 72% urea manganese zinc wettable powder, anti-virus phlegm 64%? MF Mn Zn wettable powder, 50% enoylmorpholine wettable powder and other water spray For prevention and treatment, 80% mancozeb WP can be sprayed with water before the onset of vegetable growth. Sclerotinia can be used 50% procymidone wettable powder, 50% iprodione wettable powder, 50% bovismicin water dispersible granules, 70% thiophanate-methyl wettable powder, 50% carbendazim Wettable powder and other water spray control. For control of whiteflies and aphids, 70% acetamiprid wettable powder, 70% imidacloprid wettable powder, 50% nitenpyrazine-soluble powder, etc. can be used for water spray, which can be combined with disease prevention in the seedbed or after transplanting. At the same time, yellow plates were hung in the field for baiting, and 30 yellow plates were suspended per acre. Pay attention to alternate medication, stop the medication 7 to 10 days before harvest to avoid excessive pesticide residues.
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