Antifreeze measures before and after wintering of seedlings
According to local conditions, choose the right species. Plant varieties and rootstocks with strong cold-resistance and select low-cold-tolerance marginal tree species in areas with good microclimate conditions. At the same time pay attention to planting shelterbelts and setting up windbreaks to improve the microclimate conditions.
Strengthening cultivation management helps to reserve nutrients in the tree. Strengthen the supply of fertilizer and water in the spring, rational use of irrigation and fertilization techniques, increase the accumulation of nutrients, and ensure the robustness of the tree. Topping in summer to promote the ripening of branches. Control irrigation in the fall, timely drainage, appropriate use of phosphorus and potassium fertilizer, diligence, deep plowing, and promote the early end of growth of branches, is conducive to tissue enrichment and prolong the accumulation of nutrients. Pruning in winter to reduce transpiration area, artificial deciduous, etc. have a good effect on preventing freezing damage. At the same time, strengthen the prevention and treatment of pests and diseases.
Strengthen tree protection. General trees can be used to control “frozen water†and irrigation “spring waterâ€. For species that are susceptible to freezing, the whole plant can be used to prevent the generals from being sprayed, and the insulation and frost protection can be used. In order to avoid early arrival of low temperatures, causing freezing damage.
Smoke protection against freezing. At about 2 o'clock in the middle of the night, lit up the haystacks or chemicals in the windwards, using smoke to prevent frost. This method is simple, economical and effective.
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