To prevent spring drought, moisture must be preserved. Hoeing can effectively protect moisture and increase temperature and promote early onset, and it is especially effective for wheat fields with small populations, weak individuals, and freezing damage. It is necessary to organize as early as possible to mobilize farmers to hoe all kinds of wheat fields when the surface soil is 2 cm in the early spring (top frost period) to maintain soil moisture, increase surface temperature, and eliminate overwintering weeds. Where conditions permit, watering in spring or after rain should also be paddled in time. When hoeing, it is necessary to make thin, even, level, and thorough strokes, without leaving any rubbish, not crushing wheat seedlings, and not leaking weeds, so as to improve the effect of hoeing. Suppression in early spring should be combined with hoeing, pressing first and then hoeing, to reach the pine and bottom of the soil, which plays a role in increasing moisture, protecting moisture, warming, and fighting drought.
Fertilizer and water regulation is very important. For wheat fields with "defertilization" phenomenon, topdressing and watering can be used during the rise period to prevent over-prosperous seedlings from turning into weak seedlings; for over-prosperous wheat fields without defertilization, do not rush to fertilize and water in early spring, and should be based on suppression. , Postpone the top dressing period to the late jointing stage, and apply 12-15 kg of urea per mu.
In case of freezing damage, it should be remedied in time. For wheat fields suffering from freezing damage, according to the degree of damage, growers can apply quick-acting fertilizers to promote early seedlings and increase the ear formation rate of 2-4 high tillers. Generally, about 10 kg of urea is applied per mu. At the same time proper watering in time to promote the absorption of nitrogen by wheat, balance the water status of the plant, make the small tillers grow as soon as possible, increase the effective number of tillers, and make up for the loss of the main stem. If possible, plant growth regulators can be sprayed on foliage. After the wheat is frozen, timely foliar spraying of plant cell membrane stabilizers, sodium nitrophenolate and other plant growth regulators can promote the rapid growth of medium and small tillers and the rapid emergence of latent buds, and significantly increase the number of wheat ears and thousand-grain weight ,****** Increase wheat production.
Early management promotes early onset. Remove dead leaves in early spring, improve the ventilation and light conditions of wheat fields, and promote the growth of new leaves; after the soil is thawed, topdressing should be done in time, generally about 20 kg of urea per mu, and 30 kg of nitrogen and phosphorus compound fertilizer per mu for phosphorus-deficient plots. At the same time, it should be noted that when the wheat seedlings rise to the jointing stage, it is necessary to apply nitrogen fertilizer or nitrogen-phosphorus compound fertilizer as appropriate to increase the number of grains per ear according to the condition of the seedlings.
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