The period during which wheat is sown is a favorable period for preventing germplasm transmission, soil-borne and insect-borne diseases, and eliminating underground pests. The species transmission, soil-borne, insect-borne diseases, and underground pests that occurred in local autumn-sown crops in the previous year mainly included wheat smut, wheat-strip mosaic disease, sheath blight, barley yellow mosaic disease, streak disease, and fleas.è¼è›„ è¼è›„ è¼è›„ , , , , , , , , , , , , , , , , , , , 生产 生产 生产 生产 生产 生产 生产 生产 生产. Use agricultural measures to prevent soil-borne and insect-borne diseases (1) Change cropping. Wheat field with wheat stripe mosaic disease and barley yellow mosaic disease can be transformed into rapeseed, vegetables, etc.; barley field where barrage mosaic disease occurs can be changed into barley, and wheat fields with yellow mosaic disease can be changed into wheat; Leaf blight, black streaked dwarf disease occurs in a serious area, and resolutely put an end to rice and wheat. (2) Selection of resistant (resistant) varieties. In the areas with yellow barley mosaic disease, Su beer No. 3 and Su beer No. 4 should be selected, and Ningmai 13, Chengmai 9023 and other varieties can be used in wheat field. (3) Plowing sowing. Areas with rice-wheat and wheat-cultivation habits must implement ploughing and cropping to reduce the number of bases used for wintering for migratory locusts, reduce stripe blight, and reduce the number of insects and insects in black-streaked dwarf disease, and also have a good effect on the control of wheat fields and weeds. Doing a good job in seed treatment and preventing seed propagation and soil-borne diseases is the most economical and effective method for preventing disease transmission. Specific methods: use Liquefied 60 grams / liter tebuconazole seed coating agent 10 ml mixed wheat seed 20 ~ 25 kg, first with a small amount of water (about 300 ml) to mix the drug and then poured into the seed dressing container, Mix well with the wheat seeds, so that the pesticide adheres evenly to each kind of wheat seed. After sowing, or sowing after short-term storage, it can effectively prevent diseases such as wheat smut, sheath blight, and total rot disease. Note that the amount of medication should be accurate and the dressing should be uniform. The treated seeds must be sown in sufficient quantities. When soil moisture is insufficient, water should be drowned in time after sowing to prevent incomplete emergence. With drugs sowing, prevention and control of underground pests on the general field of earthworms, earthworms, to take the initiative to control drugs. (1) Toxic soil method. Use 48% chlorpyrifos EC 250-300 ml mixed fine soil 25 kg per acre, spread evenly into the middle of the field, have good control effect on cockroaches and cockroaches. (2) seed dressing method. In the case of earthworm damage, 40% phoxim EC can be used to add 15 kg of water, 1 kg of mixed wheat seed and 10 kg of mash, 2 to 3 hours after sowing, and 40% of dimethoate can be used as the main hazard. Emulsifiable concentrate 20 ml water, 1 kg mixed wheat seed 10 kg, until the liquid dry after sowing. In addition, a recent survey found that individual rice fields with poor early control and prevention effects were serious, causing blackheads and mildew in the ear, which seriously affected the grouting and must be rushed to prevent transmission of virus disease in autumn sowing wheat crops. Control methods: Use 25% pymetrozine wettable powder 30 ml per mu, add water 40 to 50 kg spray. The dehydrated plot uses 80% of dichlorvos emulsifiable concentrate, 300 milliliters of dry fine soil, 30 kilograms per mu, and is spread evenly in the field in the late evening. Crops that mature earlier and can be harvested within half a month cannot be used. Green Sencha,Sencha Powder,Sencha Tea Leaves,Private Label Sencha SHAOXING ROYAL TEA VILLAGE CO.,LTD , https://www.yccmatcha.com