Functions and methods of winter irrigation of grape

Grapes are common fruits, and grapes themselves are drought-tolerant plants, but they must be irrigated three times a year in critical periods, of which winter irrigation is more important. So when is the vineyard well irrigated in winter? What's the advantage? Let's take a look.

1. Winter irrigation time

Grape winter irrigation time can not be too early or too late, if winter irrigation is too early, the temperature is still relatively high, the surface water evaporation is large, which is not conducive to field water storage and soil moisture conservation, and will reduce the cold resistance and freezing resistance of fruit trees. However, when the winter irrigation is too late and the temperature is too low, the irrigated water cannot seep and will freeze on the surface, which will make the roots more vulnerable to freezing damage. In order to determine the winter irrigation time of grapes, according to the local climate, the soil should be frozen when the temperature drops below 0 ℃ at night, and the soil can be thawed after the temperature rises during the day.

2. Winter irrigation.

Winter irrigation can improve the cold resistance of fruit trees and ensure the safe overwintering of grapevines. Winter irrigation can accelerate the maturity of organic fertilizer, facilitate the absorption of single minerals in roots, improve the accumulation of nutrients, increase soil water content, and improve yield and quality. Winter irrigation and water storage in soil can not only improve the ability of frost resistance, but also prevent drought in winter and early spring. The dry winter wind often causes loose soil and poor adhesion, while winter irrigation can be used to keep the soil in a moist state, which is not only insulated and moisturized but also frostproof.

3. Amount of irrigation in winter

For winter irrigation, it is appropriate for all the water to seep into the ground on the day of irrigation, 20-30 cm for young trees, 70-100 cm for adult trees, and 60%-80% of the maximum soil water holding capacity. If too little can not meet the needs of the tree, too much fertilizer will be washed away, which will not only cause fertilizer loss, but also time-consuming and laborious. Generally speaking, after 2-3 hours of winter irrigation, the depth of water seepage can be seen in the outer pit outside the tree plate.

4. Winter irrigation method

Winter irrigation can use the method of well irrigation, before well irrigation, in the tree field, dig the canal according to the tree tree, open the sluice and release water, fill the tree thoroughly, make the tree drink enough, increase the water in the root, and improve the growth ability. On the other hand, the roots of 1-2-year-old grapes should be watered, and a large basin of oval ridges should be used around perennial trees to prevent water from flowing outward, which can save water sources, achieve watering concentration and promote strong water infiltration.

The above is the introduction of the functions and methods of grape winter irrigation. I hope it can help you. If you want to know more about it, please follow us.