1. Strike and suppress, and promote the growth of the seedlings. The freezing and thawing of the soil makes the surface soil loose, which is not conducive to the combination of roots and soils and the absorption of water and fertilizer. Therefore, it should be repressed in time after the early spring soil freezing to close the cracks, consolidate the soil, reduce the evaporation of soil moisture, and avoid sudden changes in temperature. The injury; suppression 1 time can inhibit the growth of the upper part of the seedlings for 5-7 days, and promote root growth, which is conducive to the growth of Wang Miao. Wangchang wheat field should be suppressed 2-3 times in spring.
2. Properly delay the watering time in spring. The wheat population in Wangchang wheat field is large before winter, so the spring wheat should be controlled to continue to occur, accelerate the decline of high 蘖, and form a healthy group. To this end, the watering time in spring should be postponed as appropriate, to promote the polarization of wheat tillering, and to achieve the growth of Wang Miao.
3. Strengthen the integrated prevention and control of pests and diseases. Because the accumulated temperature greater than 0 °C before winter is more than normal, the number of precipitation is large and the precipitation is large, the soil water content is high, and a considerable part of the province has not been weeded before winter, with many weed species, large base, and winter. Before the high temperature and high humidity environment conditions, spring weeds and sheath blight are more likely to occur. Spring management should strengthen the comprehensive prevention and control of pests and diseases. Weed control should be chemically weeded in combination with weather, wheat seedlings and weeds after the suppression of the weeds to prevent weed disasters.
The main measures for the prevention and control of wheat sheath blight are: reducing the humidity and canopy density in the field by means of rowing and weeding, and reducing the occurrence of wheat sheath blight; second, in the first half of March, the use of 5% of the genus Water agent 250 ml / acre or 20% powder rusting cream 50-60 ml / acre, 50 to 100 kg of water, spray on the base of wheat stems, heavy disease field 7-10 days interval and then spray once.
4. Spring fertilizer management. Get up and join the jointing stage, and apply 15-20 kg of urea per acre combined with watering. Wheat fields without phosphorus and potassium fertilizers can be applied with 10 kg of urea and 15-20 kg of diammonium phosphate per mu.
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