Management measures after waterlogging in vegetables

First, clean up the ditches in time and discharge stagnant water from the fields. For the greenhouse vegetables with large and deep stagnant water, pump drainage should be adopted to lower the water level below the border surface, so as to reduce the stagnant water depth as much as possible and reduce the stagnant time.

Second, after the root of eggplant fruit vegetables such as pepper, tomato, eggplant and so on, the disease is easy to spread, which has a great impact on the yield in the later stage, so we should focus on preventing the stagnant water from being too deep and too long. Balsam pear, cucumber, pumpkin and other melon vegetables are slightly resistant to flooding, but not more than 24 hours, otherwise the disease will spread, resulting in reduced production.

Third, timely harvest of flooded vegetables. At present, it is the harvest time of vegetables in the greenhouse, so the flooded vegetables should be harvested and listed in batches in time, and diseased leaves, old leaves and fruits should be removed in time, pruning, reducing plant nutrient consumption, strengthening ventilation, enhancing resistance and reducing the occurrence of diseases.

Fourth, focus on the prevention and control of post-disaster diseases. After the vegetables are flooded, the humidity in the field is high, the disease resistance of the plant decreases, and the disease is easy to occur in a large area. After the rain stops, we should do a good job of prevention and control in time.

1. After the rain stopped, cover the greenhouse film, reduce the strong light and direct sunlight, and spray foliar fertilizer such as potassium dihydrogen phosphate or Aiduoshou on the leaf, and apply biological bacterial fertilizer to supplement plant nutrition and enhance disease resistance.

two。 Pepper, eggplant and tomato: focus on the prevention and control of blight and bacterial wilt. The blight can be controlled by spraying 58% metalaxyl (Ruidusu) wettable powder 600 times and 64% alum wettable powder 500 times. Ralstonia solanacearum can be sprayed with 72% agricultural streptomycin sulfate 4000 times and 77% wettable powder. Prevention and treatment every other week, even prevention for 2-3 times.

3. Balsam pear, cucumber and other melon vegetables: focus on the prevention and control of powdery mildew and downy mildew. Prevention and control is done once every other week, and frontier defense is done two or three times.

4. Leafy vegetables: the flooded vegetable land was harvested and listed in batches in time, and pesticides such as chlorothalonil and carbendazim were sprayed to prevent diseases for 1 Mel twice.

5. Do a good job of making up the broadcast. Timely soil preparation after harvest of serious flooded fields can timely resow vegetables such as Chinese cabbage, clover green, autumn balsam pea, amaranth, cowpea, cucumber and so on.