With the arrival of a new strong cold air, the temperature in most of the central and eastern regions has fallen, and the cooling rate is generally 6°C to 10°C. In recent days, many places have ushered in the second round of rain and snow this year, opening the "frozen" and "cold" week, in order to ensure that the vines can successfully overwinter winter should pay attention to snow and frost protection measures.
Antifreeze measures for exposed grapes
Weak seedlings planted in the same year to prevent cold, or species that are not cold-resistant, such as Goldfinger, Red Earth, and Kresen, can be buried in cold if time permits. Attention should be paid to the quality of buried soil when buried, and large-scale soil, porosity, and air leakage cannot occur.
Branching and cultivating the branches For the varieties that are not easy to be buried under the ground, and not resistant to cold, grass stems, agricultural carpets, ground cloths, or plastic films can be used to bind the stems, main vines, or resultant mother branches. Or in the grape root neck soil 25-35 centimeters, and then cover with a plastic film along the planting line, the lower part of the compaction with soil.
Pouring antifreeze water in time is a practical way to prevent freezing damage. By watering, it can avoid violent fluctuations in low temperature, and there is insulation effect.
Trunk brush white exposed grapes do not cover the cold areas, can be painted in advance on the vine trunk to reduce the temperature difference between day and night sun surface, so as to avoid damage and chapped cortex.
To avoid rain film, shading nets, and to prevent bird nets even if the anti-bird nets have large pores, they are also prone to icing and snowfall under heavy snowfall conditions. Under the effect of gravity, rack-type collapse may occur and cannot be ignored.
Antifreeze measures for grape facilities
Reinforce facility frame facilities For planting greenhouses and cold sheds, first reinforce the overall skeleton in the shed, avoid heavy snow pressure and pressure on the sheds, and then check the density and firmness of the membranes to ensure prevention. For grape growers who use simple greenhouses, shelters, and other facilities that are not strong enough, it is advisable to remove the greenhouse film directly to avoid collapse.
Increase the temperature in the indoor greenhouse or use the electric heater to warm the temperature, and add fluorescent lamps to fill the light.
Gathering blankets or insulation outside the shed is added to the mats to prevent them from being blown by strong winds. At the same time pay attention to shutters, motors and other equipment protection.
Pay attention to the clearing of the drainage ditch to clean up the drainage ditch to prevent accumulation of water.
When the shed is covered with snow and snow, it is necessary to avoid piercing the film of the greenhouse. The snow under the armpit must be removed from the shed in time to prevent the snow from flowing into the greenhouse after the snow and ice melt. Do a good job of flood prevention trench digging around the planting area, and timely dredge water to avoid water damage.
This remedy after freezing injury
Timely disaster relief, protection of plants in time after the disaster to take measures to clean up the snow on the plant as soon as possible to prevent freezing, depending on soil moisture, root and neck soil, ground cover, branches warm, to prevent the grape plants from being frozen again.
When the amount of roots in grape chilling dead reaches more than 50%, the shoots are generally difficult to recover, and they should be leveled at the root neck to allow them to sprout again.
Prevention of Diseases Due to the occurrence of frost damage, the resistance of the fruit trees is weak, so we must pay attention to the prevention and control of diseases and spray the bactericide as soon as possible to prevent the occurrence of diseases.
Supplementing the tree nutrient application leaf surface fertilizer can promote root and plant recovery. After the leaves of new shoots reach the mature leaf size of 2/3, they can be sprayed with fertilizer and can be sprayed with a solution of 0.3% urea + 0.3% potassium dihydrogen phosphate + seaweed fertilizer. The appropriate amount of sodium nitrophenolate can be added to increase the cells. Active, enhance tree vigor.
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