In the present year, the sowing of wheat in the west of Henan is relatively late, and since the beginning of winter, the temperature is low, the rain and snow are few, and the area of ​​weak seedlings is large. In order to promote root growth and ensure the safe wintering of seedlings, winter management of wheat should be strengthened, with the focus on warming the soil as the center, and cultivating, repressing, and rejuvenating fertilizers as the key points. This should be done in accordance with local conditions, as the seedlings are managed and the seedlings are grown strong. specific measure:
1. The cultivator and cultivator of the cultivator can effectively maintain the temperature, protect the hoe, eliminate the build-up, eradicate the weeds, improve the soil permeability, and promote root growth and development. In the winter wheat fields with tillers, tillers are generally used for cultivating, and individual single-seeded wheat fields without tillers are not easy to cultivate in winter to prevent damage to wheat seedlings. After the early spring wheat is returned to green, cultivators are used for cultivating; for poor quality of preparation and large amount of straw returned, In the wheat fields with ridiculous wasteland, it is necessary to carry out repression and practical work; in dryland wheat fields or waterlogged fields where the soil in the dry soils or the soil for cultivating the soil in the dry land is not real, the groundwater must be rolled first and then the soil must be kept shallow to protect the seedlings. To protect the warming, warming, seedling preservation effect. Repression should pay attention to the selection of sunny afternoons, pay attention to wet and not pressure, rain and rain, no pressure in the morning when there is frost or dew, so as not to hurt the seedlings.
2, careful winter irrigation winter irrigation can be practical soil, stabilize the ground temperature, reduce frost damage, and can play winter water spring, prevent spring drought, is the key measure to increase wheat production. There is less rainfall after wheat is sown this year, and it is more important to do a good job of winter irrigation. The temperature index suitable for winter irrigation is that the daily average temperature is about 3°C. The best time for winter irrigation is to begin in early December and finish in mid-season. At present, the best time for winter irrigation is missed. For wheat fields that have not yet been treated with winter irrigation but are relatively dry, winter irrigation must be carried out with caution. According to the weather forecast, grab the Hanweitoutou, the average daily temperature of about 3 °C to watering, and to the small water pouring, prohibit the flood irrigation, after watering day to seepage, no water left in the field, to prevent Freezing damage occurs. For wheat fields with insufficient base fertilizer, apply water to urea in time for watering, and then use water to cultivate soil immediately after watering.
3, make up the application of fertilizers in dry wheat farmland, the rain and snow can be used to supplement nitrogen fertilizer, generally 7.5 kg of urea recovery, but also increase the application of organic fertilizer or human waste. For late-seeding weak seedlings can be spread in the wheat planting line of fine soil mixed fertilizer cover, to protect the earth warming and cold, fertilize the soil, keep the seedlings safely overwinter; increase the top dressing when the point Shi, Article Shi, is strictly prohibited.
4. Prevention and control of pests and weeds should be done in time to predict and prevent pests and diseases, and efforts should be made to reduce the wintering base of pests and diseases. For the wheat fields that are seriously endangered by the current underground pests, poisonous soils, baits, or irrigation should be promptly applied for prevention and control.
5. The prohibition of indigo green leaves will cause the wheat seedlings to lose a lot of leaves, which is not conducive to promoting root growth, and is also prone to frost damage. Therefore, it is necessary to take effective measures to strengthen supervision and supervision, prohibit livestock and poultry from indigo, and effectively protect wheat seedlings.
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