The pathogens of wheat ( 2554 , -2.00 , -0.08% ) were mainly derived from the mycorrhizal sputum remaining in the soil and the manure and seeds mixed with the diseased roots, diseased stems, diseased sheaths and other residues. Therefore, to control diseases, we must protect disease-free areas, block sporadic wards, and lower the condition of old wards; adapt to local conditions, implement crop rotation, increase application of organic fertilizers, phosphorus and potassium fertilizers, select disease-tolerant products, and turn over soil; assist in pharmacy Seed dressing is an important measure to prevent disease.
　　 1 round
All disease and with increasing the number of host plants and cropping index of cropping year increase, while the non-host crops (such as vegetables, cotton (19515, -60.00, -0.31%), garlic, etc.) 1 to 2 years rotation Wheat (Micro Bo ) , the condition was significantly reduced. The use of heavy disease field large rotation, light disease field small change. Specifically, wheat is grown in seriously ill fields for more than 1 year, and vegetables, cotton, rapeseed and other crops are replanted ; after harvesting in light diseased fields, peanuts, soybeans (4825, -33.00, -0.68%) , onions, cabbages, radishes, etc. are not re-hosted. crop.
　　 2 adhere to the five reforms
　　 2.1 The low-lying harvesting is the sorghum harvesting. The infection site of the total pathogen is limited to 15cm below the root and stem base of the wheat . Sorghum harvesting can effectively control the accumulation of bacteria between seeds. Clear the field wheat stubble in time after harvesting and concentrate on treatment;
　　 2.2 Change the normal temperature and fertilizer to high temperature fermentation and sterilization. Because of the normal temperature, the fertilizer can not cause the bacteria to die, and a large number of bacteria will be brought into the field to expand the disease area. The manure after the high temperature fermentation sterilization treatment has a survival rate of 0 . High-temperature fermentation sterilization method: before and after the "great heat", the wheat bran and water are mixed, piled on the flat ground, the pile height is 2~3m , the length and width are not limited, and the surface is covered with plastic (9920, -390.00, -3.78%) After 1~2 days, the film temperature can reach 50 °C or above. After 3 days of fermentation, it can be used for base fertilizer. When it is smashed, the wheat stalks with a fermentation temperature less than 40 °C will be opened and re-stacked. Fermentation.
　　 2.3 Change from seeding to the purchase of good varieties of wheat and disease-free wheat mixed harvesting and threshing, the seeds are entrained with a large number of diseased debris. The fine seeds produced by the regular seed production department are strictly selected and have no impurities, thus preventing the spread of germs.
　　 2.4 The practice of shallow tillage for deep turning has proved that deep turning 50~60cm can reduce the white ear rate of wheat total erosion by more than 80 %. After deep turning, it is necessary to increase the soil fertility by adding organic fertilizer.
　　 2.5 Change single fertilization for formula fertilization Reasonably mix fertilizer, fertilize soil fertility, promote wheat robust growth is also an important measure to prevent and treat the disease.
　　 3  It is strictly forbidden to apply organic manure, wheat straw, straw, etc. without high temperature treatment to prevent the spread of pathogens with soil manure.
　　 4 drug treatment
　　 4.1 Soil treatment Before use, 70 % methyl thiophanate can be used to treat the soil evenly by applying 2~3kg per acre and 20~30kg of fine soil.
　　 3% 4.2 Yaojibanzhong choice wilt enemy Dan 400 ~ 600ml mix 100kg seed or 2.5% Celest better 200m1 100kg seed mix control effect.
　　 4.3 Irrigation of wheat roots during the greening period, applying eclipse or erosive spirit to hydrated 150kg per 667m2100~1500ml .
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