The management of wheat fields in spring should follow the principle of adapting local conditions to the seedlings, promoting control and integration, classifying management, and scientifically and rationally managing fertilizer and water: Fine planning early After the beginning of spring, as the temperature rises, the soil evaporation and the evapotranspiration of the wheat seedlings increase. Therefore, all types of wheat fields should be ploughed when the surface layer of the early spring is defrosted by two centimeters to keep the soil moisture level and increase the surface temperature, especially surface compaction. In the three types of wheat fields with cracked plots or small groups and weak individuals, scratching should be used as the primary measure for the management of early spring wheat. When demarcating, it is necessary to do detailed delineation, delineation, leveling, and draw-through, leaving no residue, no pressure on wheat seedlings, and no weeding, so as to improve the effect of delimiting. For the timely pouring of overwinter water, the winter freeze-thaw alternation effect is good, in the surface has been formed in the loose layer of sand Jiangan black land can not scratch, so as not to damage the surface of the loose soil layer, increase soil evaporation. Timely chemical control There are no plots for chemical weeding before the winter. Chemical weeding is required from late February to mid-March. In wheat fields dominated by broad-leaved weeds such as sow wormwood, leeks, and swine crickets, the use of double happiness, broad grasses, etc. can be used to evenly control the spray of water; lands such as wild oats and other weeds can be used. The use of oxazolyoxime (Puma) to spray water on stems and leaves was evenly controlled; crops that were mixed with dicotyledonous and monocotyledonous weeds could be mixed with the above agents. After wheat has risen, herbicides should be stopped spraying to avoid injury. Chemical control can not only control wheat growth, promote nutrient accumulation, and improve frost resistance, but also inhibit the elongation of the first internodes of the base, promote root barbulation, and effectively prevent late lodging. Due to Miao Fei water management For the strong seeding plots with appropriate sowing date, adequate population, and better lyrical conditions, if enough base fertilizer is applied before the winter, the nitrogen fertilizer should be moved backwards, and the fertilizer and water management should be performed during the jointing of wheat to the flag-raising period (upper and middle April). Amount of water is over 15 kg of urea; before the winter, no fertilizer is applied to the land. The first time after wheat is returned to green, 20 to 25 kg of potassium sulphate compound fertilizer is applied to return the soil to the soil, and the second is in wheat. From jointing to flagging stage, fertilizer and water management will be carried out, and 10 kg of urea will be applied in combination with watering. For the weak seedling plots planted late and with fewer populations, if the base fertilizer is applied before the winter, the management of the early spring wheat crops should be based on ploughing, warming the locusts to promote early-onset hair growth, and managing the fertilizers and waters again after the wheat has risen. 15 to 20 kg of urea; before the winter, the base fertilizer plots were not used for fertilizer and water management in the period of returning green crops to wheat, and 10 kilograms of urea was applied on the basis of mu, and appropriate amount of compound fertilizer was applied to ensure the fertility to be applied to the ditch. Comprehensive prevention of pests and weeds After turning green, wheat is the peak period of root infection, such as sheath blight, total erosion, and root rot, and it is also the peak period for the damage of wheat spiders and underground pests. To control the root diseases, the use of triadimefon, Shilok, Rickett rust, diniconazole, etc. to control the base of the sprayed wheat stems of 75-100 kilograms can be sprayed once every 10-15 days. The control of wheat spiders can be controlled with 1.8% avermectin 3000 times spray. If the above diseases and pests are mixed, the above agents can be mixed and sprayed.
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