How to prevent sputum in spring vegetable fields?
Spring is a good season for growing vegetables. However, when faced with the emergence of locusts in your own vegetables, it is distressing. So, how can spring vegetable fields be smashed?
First, the cockroach: a variety of perennial weeds growing near the vegetable field, easy to become a breeding ground for mites, and caused aphids to be poisoned. Therefore, after weeds in the early spring field, we should seize the opportunity to eradicate or spray herbicides to eliminate weeds, which can effectively control the number of aphids and block the transmission of viruses.
Second, the corn interception: in the village, the protection of the field side, the vegetable garden upwind, plant a number of rows of corn, so that the migration of the locusts first land on the corn, concentrated spraying cockroach cockroaches, centralized elimination of locusts.
Third, silver-gray film to avoid cockroaches: the use of silver-gray film can repel the characteristics of mites, according to the requirements of mulching film cultivation, use silver-gray film instead of mulch film, or pull the silver-gray film strip on the small arch shed. You can also use a silver-gray shade net to cover the vegetables to repel the mites.
4. Yellow plate lure: It can be made of fiberboard or cardboard with a length of 1 meter and a width of 0.2 meters. The surface is coated with a layer of yellow paint, and then coated with a layer of sticky yellow oil. Insert the plate into the field, 30-60 cm higher than the vegetable crop. Use the locusts to like yellow to lure the mites, insert 32-34 yellow plates per acre, and recoat 1 coat of oil every 7-10 days. Keep it sticky.
V. Spraying and curing: The vegetables can be sprayed once in the seedbed for 3 days before planting, which can reduce the damage of aphids to seedlings. If there are wintering spinach, early spring rape or water radish near the planting field, you can spray insecticides into these vegetable fields to reduce the number of locusts. After the seedlings are planted in the field, the leaves and heart leaves should be checked frequently. If aphids are found, spray them early to control the spread of the mites.
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