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Wheat underground pests are a kind of pests that damage the underground and near-ground parts of wheat. There are mainly three species of cockroaches, golden worms and cockroaches. In autumn, wheat is lacking in seedlings and ridges, and spring damage causes dead seedlings, causing plants to die early. There are three main methods for controlling wheat underground pests:
Soil treatment should be controlled by soil treatment methods in a variety of underground pest-infested areas or in separate severely affected areas. In order to reduce soil pollution and avoid killing natural enemies, the application of granules is advocated. It can be spread evenly with 3% phoxim granules per acre before arable land, and then ploughed into the soil. It is also possible to use 250 ml of 40% phoxim emulsifiable concentrate per acre, add 1 to 2 kg of water, mix 20 to 25 kg of fine soil to form toxic soil, and spread the ground into the soil.
The seed dressing of the pesticide on the general pest occurrence area of ​​the underground pests can be controlled by the method of seed dressing. 48% chlorpyrifos EC 10 ml plus water 1 kg mixed with 10 kg of wheat, sown for 3 to 5 hours after sowing; or 40% phoxim EC 10 ml with water 1.5 to 2 kg mixed with 15 to 25 kg of wheat, mix well After the piled up for 4 to 6 hours, dry and sow. It can also be mixed with 600 g / liter of imidacloprid suspension seed coating, no need to pile up, can be sown after drying.
After the emergence of wheat seedlings at the seedling stage, a representative plot survey was selected. When the dead seedling rate reached 3%, the application was immediately applied. It can be used with 3 to 4 kg of 3% phoxim granules per acre and 30 to 40 kg of fine soil. After mixing, it can be ditched; or diluted with 40% phoxim EC 20-50 ml per acre and 3 to 5 kg of water. Mix with 30-75 kilograms of crushed rice bran or bran to make a poison bait. If the underground pests in wheat seedlings are seriously endangered, the roots of wheat seedlings can be sprayed with 40% phoxim emulsifiable concentrate or 48% chlorpyrifos EC.
More pesticide knowledge , please pay attention to China Pesticide Network
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