In winter, the frozen soil layer is deep. Most of the young apple trees are located in the frozen layer because of their shallow roots. They absorb and transport water poorly, and cannot meet the transpiration of the branches. The whole plant died. The antifreeze method for young apple trees is as follows: Before fertilizing the fruit trees, fertilization can be done by using open-groove or radial furrow fertilization. Apply more hot organic fertilizers such as sheep manure and chicken manure, and phosphorus and potassium fertilizers to increase temperature, promote roots, and increase the water content of cells, which is conducive to overwintering and freezing resistance. Irrigation method: For orchards lacking moth, if there are irrigation conditions, the frozen water can be irrigated once before the ground freezes, in order to increase moth and balance the ground temperature, so as to prevent frost. Bending dry soil covering method For young trees planted in the autumn of that year, a small trench with a depth of 10 to 15 cm can be dug beside the tree, and the trunk can be bent down and placed in the trench, and the top can be covered with soil 25 to 30 cm. In late April of the following year, the soil can be rectified. In this way, one can prevent frost, and the other can prevent the hare from stabbing the bark. Before the main soil cultivation method overwinters, a small mound of soil can be erected around the main trunk, up to 30-40 cm, and the ground diameter is 40-60 cm. After thawing in the spring of the following year, the mound can be removed to reveal the trunk. The benefits are the same as for the bent dry soil covering method. Before the ground is frozen, the tree tray can be covered with 20 to 25 cm thick straw or a layer of agricultural film or a layer of plant ash can be applied to the tree tray to protect the temperature and increase the temperature. . Protective agent spray method can be used to spray the tree with paraffin water-retaining agent 10 times liquid, carboxymethyl cellulose 150-200 times liquid, or mold enemy 200-300 times liquid. You can also spray Jingfang No. 1 high-fat film once to close the pores, reduce water transpiration, and prevent draw sticks. The method of tying grass and wrapping plastic film can tie a circle of straw (straw, wheat straw, corn stalk, etc.) around the trunk, or cut a 0.02-0.03 mm thick agricultural film into 4-6 cm wide plastic strips to entangle the trunk. . It is required to compact and wrap according to the stubble, tightly seal the seal, and release the film around the end of April the following year. Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone Pu Foam Dressing,Adhesive Foam Dressing,Non Adhesive Foam Dressing,Hydrophilic Foam Dressing Roosin Medical Co.,Ltd , https://www.roosinmedical.com