Management Techniques of Winter Wheat Field in Shuidi, Shaanxi Province

Control the growth of wheat fields. Wang Miao wheat field in the past years, the number of stems reached 800,000 or more. Due to the large population and slender leaves, this type of wheat field is likely to cause field cover, poor illumination, and lodging after the jointing period. Therefore, the spring management should adopt measures based on control and control. First, timely suppression. The repression of wheat during the period of rejuvenation and its resumption of life is a good measure to control the growth of the disease. When the repression begins, it must begin after 10 a.m. on a frost-free day. Note that there is no pressure on the frozen wheat fields so as to avoid damaging the wheat seedlings. Saline-alkali wheat fields are not pressed to prevent soil compaction and affect soil ventilation. The jointed wheat field has not been pressed to avoid breaking the internodes, resulting in insufficient panicles. The second is spraying chemical control agents. For excessively prosperous wheat fields, the spraying of “Zhuangfengan” and “Maijujin” chemical control agents at the time of wheat returning to the beginning of growth can inhibit the elongation of the first internodes of the base, control the overgrowth of the plants, and promote root barcing. To prevent late growth during childbirth. General mu dose 30-40 ml, 30 kg water, foliar spray. Strengthen weak seedlings to promote management. The average population per acre is less than 450,000, and most of them belong to late-seeding weak seedlings. Spring field management should be based on promotion. Late buckwheat as long as the sensation is acceptable, should try to avoid watering in early spring, so as not to reduce the temperature, affect the soil permeability delay the growth and development of wheat. Should be combined with the most effective snowfall in Shaanxi Province, do a good job of seed dressing fertilizer, so that fertilizer effect before the peak of delivery, in order to increase the delivery of spring, consolidate the delivery before winter, increase the number of acres. Fertilizer management should pay attention to the classification: the group of 400,000 or so late seeding weak seedlings, in the better conditions of lye, spring top dressing should be divided into two: the first time in the return to the middle of green, 5 cm ground temperature began around 5 °C Apply 50% nitrogen topdressing fertilizer and appropriate amount of diammonium phosphate, and water at the same time to promote tillering and root growth, and increase the percentage of tillers and spikes. The remaining 50% of the fertilizer will be applied in the later stage of jointing to promote the development of wheat and improve the panicle. Number of grains. For the wheat field with a population of nearly 450,000, it is generally top-dressing and watering. General acres topdressing urea about 15 kg. For weak seedling wheat fields without irrigation, in the early spring on the basis of repression and cutting, the soil should be returned to the soil and fertilizer fertilizers or ditching should be applied to the nitrogen fertilizers to increase the number of mu. Grain number per ear, increased grain weight, increased yield. The application of phosphate fertilizer to the base fertilizer is to apply diammonium phosphate in the nitrogen fertilizer. Strengthen monitoring and control pests and diseases. Back to the jointing stage is the onset of sheath blight, stripe rust, full-bleeding, and root rot. The flowering stage is the onset of head blight. At this time, wheat spiders, aphids, etc. also begin to injure. The forecast and forecast of pests and diseases guide the farmers to prevent and control them in time. Do a good job of chemical weeding. At present, the herbicides that have a good control effect on broad-leaved weeds in wheat fields include herbicides that make them widely available, make it Long, Maixi, Mai Lao, and Superstar. 30% wheat flour, 30 grams per mu, and 35-40 kg water, control broadleaf weeds are also very good. For monocotyledonous weeds-based wheat fields, 6.9% hummus can be used for 60-70 milliliters per mu, or 3% sema-per-mu 25-30 milliliters per mu, and 35-40 kilograms of stem and leaf spray can be used for prevention and control, achieving good control effects. . The combination of broad-leaved weeds and grass weeds can be mixed with the above-mentioned agents. The period of use of the herbicide is generally before the returning green period to the growing period. When using, it must be strictly in accordance with the use of concentration and technical practices in order to avoid phytotoxicity. Prevent winter wheat damage. After the spring temperature rises, with the acceleration of wheat growth and development, the ability of wheat to resist coldness gradually decreases. In addition, the temperature in spring has been changing. In recent years, wheat freeze injury has occurred from time to time in spring, and various localities must be prepared to prevent “cold spring” and late frost damage. Meteorological forecasting, strengthen the monitoring of seedling conditions, watering antifreeze in advance before the onset of the cold wave; once it suffers from frost damage, it is necessary to immediately guide people to topdressing and watering, and to promote their recovery. Prevent bruising. Indigo will cause the wheat seedlings to lose a lot of leaves. Therefore, it is necessary to take effective measures to strengthen the care, prohibit livestock breeding, and protect the wheat seedlings.

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