How does north grape prevent frostbite, prevent frostbite how to handle?

Dendrobium can be stored in a dry and ventilated place at home, the room temperature should not exceed 20 C, and there should be no external packaging during storage. Or placed in the fresh-keeping layer of the refrigerator, and the temperature is adjusted to 3-5 deg C for refrigeration and preservation. It can also be placed in a bottle at the same time as stir-fried glutinous rice, sealed and stored in a cool place. In addition, dried Dendrobium also has a shelf life, usually for several years.

1. Anti-freezing method

1. Timely irrigation of freezing water: The temperature in the north is relatively low, so it is necessary to bury the soil to avoid frostbite.Ten days before burying the soil, it is necessary to irrigate the frozen water once in order to avoid its root system freezing and prevent drought in early spring.Pay attention to the time of watering to call water thoroughly, water enough, let the soil saturated.After watering, bury the soil when the soil is slightly dry.

2. Bury the cold-proof soil in time: After the temperature drops in autumn, it is necessary to prune it in time and tie up the branches and tendrils.Because of the low temperature and strong wind in early winter, the water in the branches and tendrils is easy to evaporate, which is not conducive to the growth of the later winter and the second year.In addition, if the temperature continues to stabilize at two degrees, it is necessary to bury cold-proof soil.For the first time, the soil should not be too thick, as long as the branches and tendrils are not exposed.

3. Burying the second cold-proof soil: The second cold-proof soil is buried when the temperature is continuously zero.At this time, the buried soil should be thickened, and the specific thickness should be determined according to the temperature.If the low temperature of 80 centimeters below the surface is minus 2 degrees, then the thickness of cold-proof soil should be between 20-30 centimeters, and the thickness of buried soil should be increased by 10 centimeters for every degree of soil temperature reduction.And so on, so you don't get frostbite.Attention should be paid to the width of cold-proof soil, not less than 1.2 meters.In addition, the roots should be covered with corn stalks or hay, which can raise the temperature of the roots and avoid frostbite.

Grape

2. Method of burying soil

The commonly used methods of burying soil are the above-ground burying method and the underground burying method.The method of burying soil on the ground is to press the pruned branches and tendrils on the ground, and then cover them with soil.The underground burying method is to dig deep ditches where the branches extend, about 30-50 centimeters deep and wide, and then press the branches into the ditches to cover the soil.