The wheat soil pests are a kind of pests that damage the underground and near-ground parts of wheat, and they are mainly maggots, golden worms, and crickets. Autumn damage causes wheat to lose seedlings and break ridges, and spring damage causes dead heart seedlings, causing the plants to die prematurely. There are three main methods for the prevention and control of wheat underground pests:
Soil treatment. In a variety of underground pests mixed area or a single serious area to use soil treatment methods to control. In order to reduce soil pollution and avoid killing natural enemies, the use of granules is advocated. Can be used with 3% phoxim granules per acre 2 ~ 2.5 kg evenly spread on the farmland, with the plough turned into the soil. Can also be used per acre 40% phoxim EC 250 ml, add 1 to 2 kg of water, mix fine soil 20 to 25 kg dubbed poisonous soil, spread the ground into the soil.
Chemical seed dressing. For the general area of ​​the underground pests, it can be controlled by chemical seed dressing. Available 48% chlorpyrifos EC 10 ml water 1 kg mixed wheat seed 10 kg, heap stuffy 3 to 5 hours after sowing; or 40% phoxim EC 10 ml water 1.5 to 2 kg mixed wheat seed 15 to 25 kg, mix well After the heap stuffy 4 to 6 hours after drying to dry. Can also be used 600 g / l imidacloprid seed coating seed dressing, no stuffy, dried after sowing.
Seedling control. After the emergence of wheat, select a representative field survey, and when the rate of dead seedling reaches 3%, apply pesticide immediately. Can be used with 3% phoxim granules per acre 3 ~ 4 kg mixed fine soil 30 ~ 40 kg, mix and open ditch after the application; or per acre with 40% phoxim EC 20 ~ 50 ml water 3 ~ 5 kg diluted , Stir in 30-75 kilograms of crushed rice bran or bran to make poison baits and apply it. If the wheat seedlings are seriously harmful to the underground pests, the roots of the wheat seedlings can be sprayed with 40% phoxim EC or 48% chlorpyrifos EC 1000 times. Http://
Veterinary drugs can be roughly classified into four categories: â‘ general disease control drugs; â‘¡ infectious disease control drugs; â‘¢ internal and external parasitic disease control drugs; â‘£ (including growth-promoting drugs). Except for biochemical immune products (bacteria, vaccines, serums, antitoxins and toxoids, etc.) for the prevention and treatment of infectious diseases, and special veterinary drugs such as special parasitic drugs for livestock and poultry and growth-promoting drugs, the rest are the same as those for human use, but the dosage , dosage forms and specifications are different. It has long been widely used to control livestock and poultry diseases.
Among veterinary drugs, commonly used are more than 20 kinds such as analgin, amoxicillin, florfenicol, ceftiofur, oxytetracycline, chlortetracycline, bacitracin, salinomycin, monensin, colistin, etc. . 60% of antibiotics are used for chemical treatment; 40% are used for chemical treatment, which not only has the effect of preventing infectious diseases, but also can promote the growth of livestock and poultry and improve the utilization rate of feed.
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