Early base fertilizer. It is one of the key measures for preventing freezing and increasing efficiency. Therefore, special attention should be paid to the application of orchard base fertilizers and early application and deep application in order to increase the utilization of fertilizers. Main trunk white. The whitening is generally performed in late October. The preparation method for 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. After mixing, brush the trunk and the bifurcation of the backbone. Cover insulation. For 1-3 year old saplings, cover 1 m square mulch on the tree plate before frost, and then cover 15-20 cm grass on the mulch to increase soil temperature and maintain soil moisture. Rootstock soil. Before freezing, earth is planted at the junction of the ground part of the tree and the underground part, with a thickness of 20-30 cm. It is removed when it is frozen in the following year. Tree wrapped. Before the big freeze comes, use the straw rope to wrap the trunk, the main branch or bind the trunk with the grass, which can effectively prevent the cold currents from invading. In the following year, when the spring solution is concentrated in the spring, both the antifreeze and the overwintering pests can be eliminated. Water before freezing. About 10 days before freezing, the winter orchard should be used for winter irrigation. Because winter irrigation can increase soil temperature, soil moisture can be maintained, soil temperature can be stabilized, and cold water can be used to prevent spring drought. Smoke increases. Smoke should be used during the coldest night in winter. The fuel should be sawdust, firewood, etc. It should be lighted at around 12 o'clock at night. It is advisable to control the fire and use dark fire smoke, usually no less than 3 to 4 fires per acre. Point, according to the determination of smoked method can increase the temperature of 3 to 4 degrees Celsius. Naphthalene acetate. Spraying naphthalene acetic acid solution in early spring can delay flowering and escape the hazard of frost. Clear tree volume snow. After snowing, the snow on the trees should be shaken in time, and the snow piled on the roots of the trees to keep the soil warm. Create shelter forests. Use shelter forests to improve the orchard's microclimate, weaken wind speeds, suppress droughts, reduce frost damage, and build protective forests to combine trees and trees. Evergreen trees are ideal.
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