First, look at the sky is based on the weather, the average temperature of the day. It starts at 7°C～8°C on the day after the beginning of winter, and ends at 3°C～5°C after the “little snowâ€. The people’s experience is that they are not frozen, winter irrigation is too early, only freezing is not possible, winter irrigation is late, and nights are cold and cold, winter irrigation is just right. Prevent watering too late, ice on the ground, causing suffocation and mechanical damage to dead seedlings, watering prematurely and being vulnerable to frost damage. Second, look at the ground is to determine the order of watering based on soil moisture, soil quality, and geology. In general, the soil moisture content before winterization is equivalent to 80% or more of the maximum water holding capacity in the field. Low-lying land should be watered early to prevent serious soil rejuvenation in the spring and affect the growth of wheat seedlings. The loss of land in the sands is fast. It needs to be watered when it is frozen and frozen to prevent freezing of dead seedlings in winter. Clay land and land with more waste must be kept in the night. When the water is used for freezing and rinsing, it will be irrigated with water, and a frozen and thawing will help to crush the mash and loosen the soil. Third, to see seedlings generally have to master early wheat first poured, after the late wheat poured; strong seedlings first poured, weak seedlings after pouring; no wheat fields without delivery. This can prevent the decrease of the ground temperature and affect the pre-winter development. But there are serious exceptions. Fourth, look at the water according to the water source conditions and the amount of water to determine the order of watering. In the condition of sufficient water supply, it should be based on the above principles and strive to finish pouring in a short time. When the water supply is insufficient, the watering time should be appropriately advanced to ensure that the soil is poured before freezing, but the amount of water poured first should be larger. In general, the frozen water must be thoroughly drenched and connected to the bottom. Poor lyrical should be poured, and lyrics should be less. After pouring the frozen water, it is necessary to properly plan, loosen soil, and press wheat in real time. Any wheat field with water content that meets the following conditions may not be irrigated: sandy soil is more than 18%; sandy loam is more than 20%; clay soil is more than 22%, and the groundwater table is high. In addition, there is no need for winter irrigation in the late wheat fields. Such wheat fields have a short growing period before winter, and the effective accumulated temperature is insufficient. Therefore, there are few leaves, few roots, and no tillers. Therefore, it is necessary to avoid pouring frozen water to make full use of the effective accumulated temperature of two freeze-thaw periods in early winter and early spring to improve the vicinity of the tillering festival. The temperature of the earth strives for more births and more long secondary roots. However, this type of wheat field that is not filled with winter must be planted before freezing, and soil should be kept in place to increase the temperature so that wheat can be safely used for winter.