In the winter season, if improper management of wheat may cause death, the management cannot be relaxed during this period.
Irrigation at the seedling stage for early cropping in wheat fields with insufficient soil moisture can be watered during the tillering period. If the soil fertility is insufficient, a small amount of chemical fertilizer may be topdressed to promote early emergence of seedlings to facilitate safe wintering of seedlings. For the management of late-seeding wheat fields, the soil temperature should be increased and the soil moisture should be maintained. The cultivator can use cultivating loose soil and watering should not be carried out during the seedling stage. Otherwise, the ground temperature will be lowered and the situation will be affected.
Timely and appropriate amount of winter irrigation timely winter irrigation, first, can stabilize the ground temperature, form a good soil moisture environment, adjust the soil nutrients in the cultivated layer, increase the heat capacity of the soil, promote plant rooting and more tillers, bred a strong seedling; Second, it is beneficial to To prevent freezing of dead seedlings, it can also mitigate the adverse effects of cold damage, drought damage and severe temperature changes in early spring. Third, it can sink the soil and eliminate overwintering pests. The fourth is the combination of winter and winter water fertilizers, which can be used for returning green and roots of spring wheat. Growth creates good conditions. In addition, the saline-alkali wheat fields can be fed in winter and can also be alkali-modified.
The timely suppression of cracking can break the soil mass, bridge the cracks, and consolidate the soil so that the roots of the wheat root can be tightly combined to promote root development. In addition, repression also has the function of lifting and protecting.
Appropriate coverage of winter sand cover wheat, cover soil cover wheat, can deepen the tillering section of the soil depth and the protection of the near-ground leaves, reduce soil moisture evaporation, improve the water conditions at the tiller section, play a role in insulation and antifreeze. Generally, the cover soil is 1 to 2 cm thick to achieve better antifreeze and seedling preservation effects. The soil covering the wheat fields should be cleared and ridged in the spring, and the soil should be cleared out of the fields when the temperature reaches 5°C. For varieties with poor cold resistance, wheat fields that are shallow and poorly ploughed should be covered early. Overwintering film coverage can increase the temperature and protect soil, effectively prevent the occurrence of frost damage, promote plant growth, thereby increasing the plant tiller and promote the development of large planthoppers, and improve the rate of tillering and spike formation. Cover film time is appropriate when the temperature drops to 3°C. It is easy to cover long before the cover is covered, and the leaves are susceptible to freezing when covered.
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