Wheat autumn seeds must be preserved

The types of occurrence of underground pests are earthworms, cockroaches, wireworms, ground tigers, and earthworms. Among them, cockroaches are common, occur in large quantities, and endanger many kinds of crops. They are the most important underground pests in the area. Therefore, in order to ensure the whole wheat seedlings, it is important to control wolfberry when planting wheat.

The control index for earthworms is 2 to 3 heads per square meter. Peanut pods, soybean pods, and corn pods with high density of insect populations should be treated with poisonous soil before planting and chemical seed dressing should be applied in a double-pronged manner. Cotton pods with small larva density should be treated with the method of seed dressing.

Sprinkle poisonous soil: You can purchase poisonous soil, or you can make poisonous soil yourself. The effective pesticides are phoxim, methylisothiphos, chlorpyrifos, etc. The homemade poisonous soil uses 40% methylisothiphos EC 500ml per mu. 50% phoxim EC 500 ml or 48% chlorpyrifos EC 400 ml 2 kg mixed fine sand 25 kg, evenly applied to the surface immediately after ploughing the land, or with 5 kg of 3% phoxim granules per acre with seeding Gully. Pharmaceutic seed dressing: 40% methylisosulfide EC or 50% phoxim EC 50ml diluted 2 kg water, spray mixed wheat seed 50 kg, mix and boring for 2 to 3 hours, spread out to dry . The control of underground pests also serves as part-time locusts, and can also be used for seed dressing with multi-purpose special seed dressings: 40% methylisoprenofossil EC 50g (1 bottle) + 70% imidacloprid seeds can disperse granules 70g (1 bottle or 1 Bag) is a set, each set of 0.4 to 0.8 kg of water diluted, spray mixed with 20 to 25 kg of wheat. Operation method: First, pour wheat seeds into pots or plastic sheets without water seepage, spray the liquid and mix thoroughly for 5-6 times until the liquid is completely absorbed. After 5-6 hours of drying, sow seeds.

After the emergence of wheat, when the wheat seedlings are seriously harmed by leeches, they can be controlled by spraying the liquid: 48% chlorpyrifos EC 1000-1500 times or 50% phoxim EC 1000 times. Sprayers are sprayed and sprayed.

Chlorpyrifos and phoxim have a long duration in the soil and can control the occurrence and harm of underground pests for a long time after administration.

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