One, plan. Before wheat is ploughed in winter, it can eliminate weeds, loosen the soil and bridge the cracks, which is conducive to drought protection and freezing. Among them, for late-seeding weak seedlings, ploughing can also promote root mulching; proper squating for strong seedlings and wangmiao seedlings can cut off some secondary roots, promote root barbulation, and increase deep root volume, which is conducive to control and prosperous growth. To prevent premature aging and lodging of wheat, and to reduce the number of childbirth, improve the structure of the group, and promote large-grained ears.
Second, suppression. Before winter wheat can be repressed, it can crush crushed rubbish and compact the soil. It has the functions of lifting hoe, promoting roots, increasing glutinous rice, and strengthening seedlings. At the same time, repression can also inhibit the growth of the main stem and big buckwheat, which is conducive to the growth of Wang Miao. The repression should be carried out on a sunny day at noon. When there is frost, ice or dew in the early morning, no repression can be made. Saline wheat fields and soil-wetted wheat fields cannot be suppressed.
Third, winter irrigation. Wheat timely winter irrigation, you can stabilize the ground temperature, to prevent freeze-killed seedlings; soil can be crushed, rub debris, eliminate overwintering pests; saline-alkali wheat in winter irrigation, you can also press alkali to improve soil. The appropriate time for winter irrigation usually starts when the daily average temperature drops to 7-8°C and ends when it reaches 5°C or so. Winter irrigation is too early, the temperature is high, evaporation is large, and the effect is not enough; winter irrigation is too late, the soil is frozen, the water cannot be infiltrated in time, the water in the ground area is frozen, and the wheat seedlings are easy to suffocate or die under the ice. Bing Ling, lift up the clod, break the wheat root, hang the wheat seedlings. The sequence of winter irrigation is generally to infiltrate the poor clay ground, low-lying land, and later infiltrate the water-rich sand land; the second and third types of wheat fields with insufficient irrigation or poor surface mulching are used. Early, and there is a long trend of wheat.
Fourth, grazing prohibited. Practice has proved that after wheat seedlings are eaten by livestock such as sheep, the area of ​​green leaf and ground cover are reduced and the damage from freezing is worsening. The spring return to spring and late, and the tillering percentage and panicle weight of tillers are all significantly reduced. Therefore, it is necessary to prohibit grazing. Http://
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