The area of ​​late sowing wheat this year is relatively large, the seedling condition is generally weak, and the moisture content of some wheat fields is biased. The current is the critical period for strengthening wheat field spring management, promoting the transformation of seedling conditions, and setting up a high-yield shelf.
1. Suppress hoeing, increase temperature and protect moisture. Suppress the loose soil that can be frozen and thawed, improve the moisture content, and help the root system to absorb nutrients; hoeing can increase the ground temperature and reduce the evaporation of soil water. Press first and then hoe to improve moisture, protect moisture, and fight drought.
2. Promote the combination of control and classified management. (1) Wheat fields with poor moisture content should be watered as soon as possible to resist drought and protect seedlings. For wheat fields with severe soil moisture loss, the average temperature of the day was stabilized at above 3°C, and small water was irrigated at noon. Individual wheat fields are combined with watering to apply about 10 kg of urea per mu, and an appropriate amount of diammonium phosphate is added. (2) For wheat fields with better moisture content, fertilizer and water management should be based on seedling conditions. (3) For "a needle" wheat seedlings, hoe and topdressing should be done early. In the early spring, when the surface soil is 2 cm of freezing, start to hoe, and apply nitrogen and phosphorus fertilizer in time to promote the increase of tiller and ear count. As long as the moisture content is acceptable, avoid watering in early spring to avoid lowering the ground temperature and affecting soil permeability. When the daily average temperature stabilizes above 5°C, apply 8-10 kg of urea per mu in combination with watering. Apply 5 to 8 kg of urea at the jointing stage to promote the development of spikes and increase the number of grains per spike. (4) The wheat seedlings with better tillering are managed with fertilizer and water during the rise period, combined with watering acres and topping with 10-15 kg of urea.
3. Prevention and control of pests, scientific weeding. After the average daily temperature exceeds 6°C, choose a sunny day from 10 am to 4 pm, and spray pesticides scientifically according to the weeds in the field.
4. Prevent diseases. The spring climate is changeable, and great attention must be paid to preventing wheat from freezing damage in early spring. After being frozen, urea should be topdressed in time, plant growth regulators, foliar fertilizers should be sprayed to promote the rapid recovery of growth and development of seedlings.
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