Wheat production to improve frozen water to be poured

This year, the wheat planting area in Zhaoxian County is 600.25 hectares. Overall, the amount of wheat planted at the end of the crop is adequate, the sowing date is appropriate, the amount of basic fertilizer is scientific, the area of ​​straw returned to farmland is large, the seed quality is high, and the basic seedlings are sufficient. At present, the growth of wheat is good, and the foundation of wheat sowing is good. In previous years, it laid the foundation for a good harvest next year.

This year's looting and sowing of stalks and the return of crops to the fields are large. Therefore, it is necessary to scientifically pour well overwinter water according to the growth condition of the seedlings and soil moisture. Pouring frozen water is an important measure to ensure safe winter wheat.

The benefits of frozen wheat water are:

1. Ensure that wheat has a suitable water supply in winter, consolidate the tillering before winter, stabilize the ground temperature, compact the soil, and prevent freezing and dead seedlings.

2. It will help maintain good public opinion in the early spring of the year and postpone the first time in spring for management initiative.

3. Weathered clods can be used to make up for surface cracks and eliminate overwintering pests.

4. It can promote the activity of soil microorganisms, accelerate the decomposition of organic fertilizers, and create good fertility conditions for the growth of wheat in spring.

In order to ensure the safe winter wheat, winter cold irrigation play the role of cold, winter irrigation must pay attention to the following three points:

1, a reasonable determination of frozen water time

The time of winter irrigation varies depending on the climatic conditions and soil conditions. Generally, when the average soil temperature is 5 °C in a 5 cm layer, the average daily temperature is 3 °C, and the surface soil is frozen overnight. It is advisable for water to seep through the soil. Prematurely, high temperatures and large evaporation do not play the role of heat preservation and mashing. In wheat fields with good growth, wheat seedlings will grow due to sufficient water and fertilizer, which will cause severe jointing before winter, and will cause freezing damage. Too late, the temperature Low, water is not easy to infiltrate, the formation of stagnant water, the surface of the frozen, after winter irrigation, plants are susceptible to freeze-killed seedlings. The farmer said: "It's not clear that there is no cold, winter irrigation is too early; nights are frozen, daytime irrigation, irrigation is good; only freezing is not possible, and winter irrigation is late." This is scientifically justified.

2, look at the situation to see the seedlings

In order for wheat to be in a suitable soil moisture content when returning green, generally the soil moisture content is insufficient, the soil moisture content of the cultivated layer is less than 16%, the loam soil moisture content is less than 18%, and the clay ground is less than 20%. Above the above indicators, soil moisture is better and can be slow or no irrigation. For weaker seedlings with few leaves, few roots, and few tillers or tillers, especially for late-seeding seedlings, winter irrigation is not performed; for wheat fields with large populations and strong growth, if wintering is good, winter or winter irrigation may be delayed. The wheat field with a good bottom and adequate fertilizer is not poured over winter water.

3, irrigation should be appropriate

Winter irrigation time in the morning irrigation, seeping before entering the night is appropriate. General irrigation volume of 45-50 cubic meters per mu, irrigation water should not be too large. For fertility-deficit wheat fields, winter irrigation can be combined with topdressing. Winter irrigation per acre supplement urea 5 ~ 8 kg. After watering, it is necessary to carry out timely conservation and increase the temperature of the ground to prevent cracks and cracks, and ensure the safe winter wheat.

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