The latest matters needing attention in winter irrigation of wheat

Winter irrigation of wheat is to irrigate the field in winter, which can improve the water storage capacity of the soil, prevent drought in spring of the following year, and also improve the ground temperature to make it safe to winter. This method is often used to plant winter wheat in the north, and it has obvious yield increase effect. But winter irrigation should also be reasonable, the correct time, watering amount should be considered, so as not to play a counterproductive role, wheat together to see the precautions for winter irrigation of wheat bar.

1. Soil moisture

Winter irrigation should pay attention to soil moisture, if the moisture in the field is less than 70%, then winter irrigation can be carried out, but if it is higher than 70%, winter irrigation should not be carried out, and the time of winter irrigation should be postponed. It can also strengthen soil loosening and moisture preservation, improve soil temperature, promote wheat root system to tie down, cultivate strong seedlings, and make it safe to winter.

2. Temperature

In winter irrigation should also pay attention to the temperature, winter irrigation suitable temperature in the daily average temperature of about 30 degrees, if winter irrigation too early, then the temperature is higher, transpiration is greater, lose the effect of winter irrigation, and the temperature is appropriate, sufficient water, easy to cause seedlings to grow vigorously or long. However, winter irrigation is too late, the soil has frozen, then winter irrigation water can not seep down, siltation occurs on the ground Lingtai, resulting in seedling freezing or suffocation death. Therefore, the best winter irrigation time is before the cold current arrives and the temperature is lower than 0 ° C, which can obviously improve the ground temperature and ensure the safe winter of wheat seedlings.

3, irrigation should not be too large

Although it can achieve the effect of increasing production and income, it is necessary to pay attention to the amount of irrigation in winter, which should not be too much, resulting in ponding on the ground. At this time, the phenomenon of late winter irrigation will occur. The water freezes on the ground to form ice shell, resulting in freezing of plants on the ground, hypoxia and suffocation of roots. It is best to die due to tillering. Therefore, attention must be paid to winter irrigation, with complete water infiltration is appropriate, no water on the ground, soil humidity between 70%-80% is appropriate.

4. Intertillage and warming

After irrigation, tilling and loosening should be done in time, which can break the hardened soil condition, eliminate cracks, increase the permeability of the soil, improve the ground temperature by 1-2 degrees, and make the root system grow better. New lipid film can also be applied to preserve moisture and increase temperature, prevent water evaporation, soil hardening, isolate disease and insect sources, and ensure safe winter of seedlings.

The above is the wheat winter irrigation precautions introduction, hope to help you, want to know more related knowledge, please pay attention to us.