Affected by the rainy weather in this year's growing season, the vines in the late open-air grapes are greedy and their organizations are not fulfilled. This poses potential problems for the normal wintering. How can we ensure that the open-air grapes safely pass through the winter?
Timely rack trim
In late autumn and early winter, the temperature is low, and the wind is strong. Especially in this year's climatic conditions, the grapevines have high water content, and it is easy to increase the evaporation amount due to the wind. After the grapes are defoliated, they are trimmed according to the proposed yield indicators and then tied with straw ropes or plastic ropes.
Timely buried
According to the local weather forecast and field observation of temperature changes, when the minimum temperature stabilized at about 2°C for five consecutive days, it began to be buried in cold weather. When you buried, pay attention to the root of the first 30 cm height of the mound, then the vines along the line to the overwhelming. And then buried up, the first time the buried should not be too much, so as not to expose the dendrite as a standard.
Timely irrigation
After the grapes are buried, the cold water should be poured and watered once, in order to prevent root freezing damage and drought in early spring. When irrigation, one-time irrigation should be performed to meet the saturation condition of the soil.
Adjust the thickness of buried soil and cold-proof materials
In cold regions, it is necessary to pay attention to the second time of burial and cold-proofing. Some varieties that are not resistant to low temperatures should be buried in the second cold-proof soil before freezing. The thickness of buried soil is generally 15 cm. In order to achieve a better cold-proof effect, when buried in the second cold-proof soil, it can be covered with corn stalks or weeds and then buried. In this way, the soil temperature at the base of the grape roots can be significantly increased, which is conducive to safe wintering of the grapes.
Plastic film weeds cold
In the microclimate region where the temperature in winter is not very low, the grapes can be overwrapped and covered with plastic film and then covered with weeds, corn stalks, and horse dung. Finally, apply a thin layer of earth to these coverings.