Scientific watering ensures that wheat is safe for winter

In view of the characteristics of this year's wheat sowing period, good sowing quality, long growth time before winter, and more basic seedlings, more seedlings and more seedlings, more straw returning, and the layout of the varieties, the winter wheat straws are mainly made of frozen water. It is a crucial technical link to ensure the safe wintering of wheat and to capture the harvest of summer food next year. First, it is necessary to fully pour the frozen water (winter water), timely winter irrigation, increase soil moisture, stabilize the ground temperature, moderate the dramatic changes in ground temperature, and consolidate the soil, which is one of the most important measures for wintering protection of winter wheat in the northern winter wheat area. . In the high-yield wheat fields with a large number of pre-winter groups, sufficient winter irrigation can also create conditions for the next year to return to the green period without watering and controlling the population. The period of winter irrigation generally begins at an average temperature of 7-8 °C after the winter, and ends when the average daily temperature is 3-5 °C after the snowfall. That is, "the night is frozen, the winter is just right." The corresponding time is approximately November 17-30. The principle of watering is: low-lying, viscous early pouring, sandy late pouring; de-fertilized water-deficient yellow seedlings weak seedlings are properly early poured, Wang Miao, strong seedlings, wheat fields poured over the full moon water are properly late. Second, all kinds of wheat fields must be slashed after watering to make up for the cracks and keep the lyrics. The third is to apply 5-10 kg/mu of urea to the wheat field for de-fertilization and yellowing. The fourth is the foliar spray anti-freeze agent: especially the wheat field of the Shijiazhuang series and the Jimai series, which can be sprayed with “Baihu”, “Shuofeng 481” and “Yunda 120”, all of which contain alizarin. Lactone, which can enhance drought resistance, cold resistance, growth promotion and fruiting in plants. Fifth, the rate of dead wintering in the wheat field with straw returning to the field is obviously increased. After pouring the frozen water, choose the soil surface to produce the frozen-thaw layer when the wheat is preserved, or cover the organic fertilizer such as cattle and sheep feces for cold protection. Sixth, it is forbidden to put sheep in the wheat field.

(Liu Wanhua)

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