Now it is time for the northern wheat to enter the period of pouring winter water. Xiaobian sees the relevant information and knows that the wheat before winter should have a sputum and maintain the ground temperature. For the lyrics, we used to plant the groundwater before pouring water, and rarely water the winter water. The book said that pouring winter water is conducive to the tillering of wheat. Moreover, the water is usually poured well before sowing, but then it is said that the water is easily formed before the planting, and the soil compaction is also required. So how do we water the winter wheat? What are the benefits of wheat over the winter water? When is it suitable? The following small series will give you a detailed analysis of this problem:
The benefits of pouring over winter water
The first is to improve the soil moisture to ensure the water supply of wheat seedlings; the second is to reduce the freezing damage, the soil heat capacity and thermal conductivity will increase after pouring winter water, can increase the ground temperature 2-3 degrees, and will also reduce the surface temperature difference between the day and night, thereby reducing wheat freezing damage; Prevention of spring drought; Fourth, it can consolidate the soil, making the wheat roots and soil contact more close to the roots to form strong seedlings; fifth, it can kill some wintering pests.
Should not water winter water
Although there are so many benefits in pouring over the winter water, it cannot be generalized. It is not impossible to pour. The bottom is full, the repression after the sowing can be done without pouring, the quality of the sowing is high, the seedlings have reached the standard of strong seedlings before winter and it is not particularly dry. Can not be poured. Many places in this year have suffered from continuous rain during the sowing period of wheat. The bottom is very abundant, and most of them can not be poured!
When pouring, when is it appropriate?
Some people say that the average temperature is 1-4 degrees when pouring properly, there are also 1-3 degrees, and there are 5-7 degrees. In fact, there is no specific standard. Xiaobian believes that as long as it does not form hail during the day. Yes, that is to say, it may freeze at night after watering, but it can be frozen in the daytime. It doesn't matter if it is a day or two, and it will lead to a long time. Don't delay, if it freezes after watering, It is easy to suffocate the wheat seedlings under the ice layer, which is not conducive to the smooth wintering of the wheat seedlings. In addition, it is best not to flood the water to avoid excessive water accumulation in the field. For the weaker plots, the wintering water can be used to supplement the nutrients to make the nutrients weaker and stronger.
Xiao Bian wants to remind that for the winter wheat that has not been poured, the dry wheat fields should be poured back to the green water to protect the seedlings and promote the growth. When watering, it should be noted that small water irrigation is required, and the next day, there is no water on the surface. Avoid flooding with large water, water on the surface, and ice formation at night. According to the actual situation, it is appropriate to carry out top dressing in combination with watering.
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