How do outdoor grapes overwinter?

If the temperature of grapes grown in the open air drops to MINUS 6℃, their roots will be frozen to varying degrees, and when it drops to MINUS 8℃, they will all be frozen, so it is necessary to take good cold-proof measures for grapes. Today, let's introduce the coup of open-air grapes for winter.

Wonderful trick of open-air grape in winter

Trim the shelves in time. In late autumn and early winter, the temperature is low and the wind is strong. Especially in this climate this year, the water content of grape branches and vines is high, and it is easy to increase evaporation due to wind. After the grapes have fallen leaves, they should be pruned reasonably according to the proposed yield index, and then the branches and vines should be tied with straw ropes or plastic ropes.

Bury the soil in time. According to the local weather forecast and on-the-spot observation of temperature changes, when the temperature is stable at about 2℃ for five consecutive days, cover the soil to prevent cold. When burying the soil, pay attention to cultivate a 30 cm high mound at the foundation, and then crawl the branches and vines along the line. Then bury the soil upwards, and it is not advisable to bury too much soil at a time, with the standard of not exposing branches and vines.

Timely irrigation. After the grapes are buried, they should be watered with cold water to prevent the roots from freezing and drought in early spring. Irrigation should be completed at one time, with the soil reaching saturation as the standard.

Adjust the thickness of buried soil and cold-proof objects. In cold areas, attention should be paid to covering the soil for the second time to prevent freezing. For some varieties that can't tolerate low temperature, the soil should be covered for the second time before freezing, and the thickness of the soil is generally 15 cm. In order to achieve better cold-proof effect, when burying the second layer of cold-proof soil, corn stalks or weeds can be covered before covering the soil. This can obviously increase the soil temperature of grape roots, which is beneficial to the overwintering of grapes.

Plastic film weeds prevent cold. In the microclimate area where the temperature is not very low in winter, the crushed grapes can be covered with plastic film, and then covered with film with weeds, corn stalks, horse manure and other cold-proof materials. Press a thin layer of soil on these lids.