When is the best time to water the wheat in winter?

Water is best for wheat in late April and early May.

The suitable temperature of frozen water is: the daily average temperature is about 3℃. Excessive drought is easy to harden and crack, and the water loss is fast, indicating that the water is insufficient at the end of winter; If the winter irrigation is too late, the water will not easily seep down that day, and the wheat seedlings will suffer freezing damage due to the freezing of the surface; The key is to seize the right time.

According to experiments, in cold winter years, when the average temperature of the day is 0℃- 1.5℃, the ground will freeze to death. During the "heavy snow" solar term, the number of wheat spikelets irrigated in winter is less, which is 6.7% lower than that irrigated in early winter. Practice in recent years has proved that the average temperature on that day has dropped to 7-8℃ (after the start of the winter festival1October 1 15) and reached about 3℃ (before and after the light snow festival), so it is appropriate to complete the pouring.

The reason why winter water is poured on wheat is that frozen water can make winter wheat seedlings have enough water, which is of great benefit to protecting tillers before winter and promoting new tillers, and can also play the role of using winter water in spring and preventing spring drought. Improving the thermal conductivity of soil can effectively reduce the temperature change in the field and prevent freezing injury and seedling death caused by severe temperature fluctuation.

It can make the soil sink, freeze and thaw weathered debris, make up cracks, eliminate overwintering bacteria and pests, and is beneficial to the tillering of the pier; It plays the role of pressing alkali to protect seedlings and reducing soil salinization. In addition, winter irrigation can also promote microbial activities, accelerate the decomposition of organic fertilizer, and meet the growth of wheat after turning green.

wheat

Wheat is the general name of Triticum, and its representative species is common wheat or Gramineae, which is a cereal crop widely planted all over the world. Wheat caryopsis is one of the staple foods of human beings. After grinding into flour, it can be made into bread, steamed bread, biscuits, noodles and other foods, and after fermentation, it can be made into beer, alcohol, white wine (such as vodka) or biomass fuel.