Prevention and control of four coups
After the harvested leek has just been harvested, there is a rich leek odor over the leek field, and it is easy to attract a large number of adults to spawn. Therefore, after the leek is harvested, the plastic film should be covered with leeks on the surface of the leek immediately for 3-5 days. After the leek has healed, the odor disappears and the film is peeled off. Sprinkle the leeks after harvesting. Sprinkle a layer of vegetation ash in time to prevent adults from spawning. Spraying is used to kill the adults in the adult emergence period. Spraying the surface with 50% phoxim 1000 times or 2.5% deltamethrin 3000 times can kill the adults directly. Irrigation roots in the flood season, found that the tips of the leaves yellow, soft and gradually lodging on the ground, with 50% phoxim EC 800 times Irrigation root, or in conjunction with water, top-up with water per acre of bicarbonate Ammonium 15-20 kilograms, or 1 kilogram per gram of copper sulfate to 200 kilograms of water on the roots of leeks, can effectively kill fleas. Black Medical Mask,Medical Mask Use,Medical Face Mask Use,Children'S Medical Masks Wuxi Kanghe Medical Consulting Co., Ltd. , https://www.jskanghe.com