In mid-December, cold air activity was frequent in many places in China, and the temperature in the central and eastern regions was low. On the 13th to 15th, there was little snow or sleet in the eastern part of the northwest region, the western part of North China, the Huanghuai region, and the eastern part of the northeast region. In the planting area, it is necessary to do anti-freezing and cold-proof work for fruit trees. Xiao Bian arranged the following antifreeze tricks to share with everyone.
First, early base fertilizer
Application of organic fertilizer can support strong trees, enhance the ability of fruit trees to resist cold. Therefore, special attention should be paid to the application of orchard basal fertilizer and early application and deep application in order to increase the utilization rate of fertilizer. This is extremely important for the high yield and quality of Zanthoxylum tree, especially for increasing soil temperature and storing nutrients. Over-wintering fertilizer should be based on trace element bio-fertilizer in the probiotic source. In combination with nitrogen, phosphorus, potassium and other quick-acting fertilizers, it can be applied in the form of an open ring groove or trenching.
Second, orchard winter irrigation
Because orchards are mostly on hillsides, hills, rivers and floodplain lands, with shallow soil layers and poor water retention, it is easy to cause fruit trees to suffer drought and cold damage. Therefore, it is necessary to fill the fruit trees with water 1 or 2 times before entering the winter, so that water can be used to raise temperature and increase temperature. Temperature, reduce the occurrence of frost damage.
Third, trunk white
Using whitening agent to evenly coat the trunk and main branches of fruit trees to prevent freezing, prevent sunburn, and kill pathogens, eggs and adults hidden in the trunk. The preparation method of the whitening agent is 10 parts of quicklime, 1 part of sulfur powder, 1 part of salt, 0.1 part of vegetable oil and 20 parts of clear water.
Fourth, surface coverage
With rice straw, wheat straw, hay, corn stalks, etc. covering the rows of fruit trees, you can stop cold winds from invading rhizomes, reduce frost damage, but also reduce soil moisture evaporation, play a role in heat preservation. When covering, the straw and other coverings should be cut into small pieces of 15-20 cm in length, covered evenly after covering evenly, to prevent the wind from being blown away. After the mulch is rotted, it can also become an organic fertilizer for the growth of fruit trees. For 1-3 year old saplings, it is also possible to cover 1 m square mulch on the tree tray before frost, which can increase soil temperature and maintain soil moisture.
Fifth, the tree package
Before the big freeze comes, wrap up the trunk or main branch with a straw or straw rope to prevent the cold wind from invading and reduce the loss of water from the trunk. Before winding, it is best to soak the wound in lime water for 1-2 days to disinfect and sterilize, to prevent pests and diseases from invading fruit trees. In the spring of the spring, the grass will be burnt down to eliminate overwintering pests.
6. Increased temperature of smoke
Smoke should be used during the coldest night in winter. It is used to burn chopped firewood, chopped weeds, sawdust, and oyster shells. It ignites around 12 o'clock at night, and it is advisable to control the fire. Not less than 3-4 fire points and set it on the upwind outlet. According to the measurement of smoke, the temperature can be increased by 3-4°C.
Seven, clear snow
In some places, it is cold and snowy, and heavy snow can easily bend or crush branches. Branches and branches can increase frost damage to fruit trees. Therefore, after the heavy snowfall, the tree trunk should be shaken in time, shake off the snow, in order to protect the fruit trees for a smooth winter.
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