The greenhouse vegetable pest control "three strokes"

Before the planting of high-temperature stuffy vegetables, choose sunny days to cover the shed film and close the boring shelter for 7 to 10 days so that the temperature in the shed can be increased to above 60°C to kill the pathogenic spores and eggs on the soil surface and wall to reduce the growth of vegetables. The source of infection. If the room is covered with high temperature, per cubic meter of room space, with a homogeneous mixture of 3 grams of sulfur powder, 5 grams of sawdust, 1 gram of dichlorvos smoke, ignited, closed smoke, better, but after the smoke should be Exhale for 2 to 3 days and then plant the soil again.

Seed treatment pests often latent or mixed on the seeds or seedlings of vegetables, seed treatment before sowing, can prevent the spread of some diseases and insect pests. The commonly used treatment methods include warm soaking and chemical treatment. Soaking in warm soup is usually done with soaking in warm water at 50°C~60°C for 5~15 minutes. When soaking seeds, it should be stirred constantly to make the seeds heated evenly; the agent can be treated with 0.1% copper sulfate, 0.1% potassium permanganate or 300 times of Fore. Marlin soaking seeds can also be seeded with 0.3% to 0.4% of the 50% carbendazim WP.

Before disinfecting or planting soil pesticides, disinfection of greenhouse soils can kill pathogens or eggs in the soil, and prevent or reduce pest damage during vegetable growth. When the soil is disinfected, according to the occurrence of diseases and insect pests perennially, there may be a targeted selective agent, such as 50% carbendazim WP, 50% thiram WP, 40% pentachloro nitrobenzene WP, 5% phoxim granules, add the appropriate amount of fine dry soil to the selected pharmaceuticals, spread evenly on the surface, and then plough into the soil. Seed disinfection can use 50% Tortoise WP, 50% thiram wettable powder or 40% pentachloronitrobenzene. One third of them are laid on seedbeds and two thirds of them are sown on seed after sowing. The lower cover covers the vegetable seedlings with obvious control effects. However, we must pay attention to keep the surface of the bed moist and prevent injury. .

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