Integrated control of wheat soil pests

Wheat soil pests are soil-borne pests that damage the underground and near-ground parts of wheat. These pests harm wheat in the autumn seedling stage and spring seedling stage. They bite into the underground rhizomes of wheat and cause wheat seedlings to fall short of ridges in autumn seedlings. The spring seedling damage causes dead heart seedlings, causing the wheat plants to die in advance and damage them in autumn. The most important. In recent years, due to straw returning, the area of ​​the occurrence of underground pests in autumn seedlings has increased year by year, and the damage has increased. Serious crop failures have occurred in the wheat fields, resulting in huge losses to farmers. According to investigation by related departments, the density of insect pests in the province far exceeds the control standards for underground pests. Therefore, doing a good job of prevention and control of underground pests is one of the keys to ensuring stable production and high yield of wheat.

According to the author's practice, the following comprehensive measures can be taken to prevent and control the underground pests of wheat: Agricultural control: Underground pests live in the soil throughout their lives, especially in areas where weeds and extensive farming are heavy. Therefore, a series of agricultural technical measures should be adopted, such as intensive cultivation, rotation cropping, deep plowing and deep turning of the land, timely cultivating and weeding, reasonable irrigation, and fully decomposing and fermenting various organic fertilizers to reduce the population density and reduce damage. Soil treatment: Before ploughing, use 50% of phoxim EC 300 grams of water and 25 kg of water per acre, spray evenly on the surface with a sprayer before plowing, and then the soil preparation is better. Pharmaceutics seed dressing: First, phoxim seed dressing. Note that the concentration should not exceed 0.2% so as not to affect germination. It is effective for killing cockroaches, cockroaches and wireworms, and is low in toxicity. The second is dimethoate seed dressing. 1 kg of 40% dimethoate emulsion 40-60 kg of water, 400-600 kg of seed dressing, more than 4 hours of stuffy stuffiness, effective for poisonous killing. The third is poison bait. Use 5 kg of wheat bran or cake flour, add the appropriate amount of water and 40% methylisoflunoate or 75% phoxim EC 50g after sauteing, mix well and spread it in the field in the evening, 2-3 kg per mu. The effect of poisoning on earthworms can reach 90%.

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