The current winter wheat is to eliminate "four evils"

According to investigations, the main diseases and pests in wheat fields are maggots, wheat maggots, migratory locusts, and swans, and some of these pests directly harm wheat, causing ridges and ridges, and some also transmit viral diseases, and some use wheat fields as wintering and In the coming year, the bases for breeding insects should be investigated in time. 1. Hey. The whole wheat seedlings damaged by the pods died of dead, standing or lodging, and some of the wheat seedlings showed brown leaves on the upper part of the seedlings. The infected seedlings were pulled out and the roots showed messy appearance (pictured). According to black-light larvae, the number of locusts this year was more than 20% higher than in previous years, and in wheat fields that were sown by the end of September, the rate of wheat damage was as high as 15%. Controlling cockroaches can use poison bait to kill, can use wheat bran as bait, first fry the wheat bran, then add 30 times 90% solution of trichlorfon, stir evenly to make bait. You can also use the poison Valley to kill and cook the millet to a half-cooked state. After removing it and drying it, use a 100-fold solution of pesticides such as phoxim and dimethoate to prepare the poison valley. Sprinkle wheat in the evening. 2. Wheat aphids and spurts. In addition to wheat, these pests also spread wheat yellow dwarf disease and bushy dwarf disease. In recent years, these two viral diseases have become increasingly serious. After the emergence of wheat, these pests have gradually moved from the surrounding weeds into the wheat fields. According to the survey, wheat yellow dwarf disease and bushy dwarfism are all manifested as heavy onset in the field or on the edge of the field, and are lightly located near the inside of the wheat field. Here, because the poisonous insects (Malus and Laodelphax striatellus) first flew to the field side to harm the wheat, they were gradually spread to the inside from the edge to carry out the hazard. Therefore, spraying insecticides on wheat seedlings of these pests can be sprayed with 30% acephate 1000-fold, 2.5% kung-fu 1,000-fold, and 4.5% beta-cypermethrin-2000-fold spray. Similar grasslands to prevent spread of viral disease by poisonous insects. 3. Swedish fly. In addition to damaging wheat and oats, the pest also harms crops such as corn, millet, and sorghum. In the winter wheat area, it gradually increases from the primary pest to the major pest. After sowing of winter wheat, the worm lays eggs on the stems and leaves of the wheat seedlings. After hatching, the worms harm the dead heart of the wheat heart. The earlier the crop is sown, the heavier the damage is, and the winter in the wheat field. Pheasant metamorphosis shifted to summer corn and millet for damage. During the period of August-September this year, rot fish lures have been set up in the fields, and they have been induced into adults one after another. In the wheat planted in mid-September, the dry heart rate of wheat was found to be more than 10%. Therefore, the early broadcast wheat field should be promptly investigated and controlled to reduce the amount of overwintering insects. The pests can also use the above-mentioned acephate, cypermethrin, etc. to carry out a multi-spray prevention. The severe plot of dry seedlings needs to be controlled throughout the field. (National Grain Production Project Luancheng Research Group)

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