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苹果树受冻原因除受低温侵袭外,还与树势、树龄,栽培管理水平有密切关系。因此,预防苹果树受冻必须在加强综合管理、增强树势、提高树体抗寒力的基础上,采取如下防冻措施: 1.冻前灌水 当秋冬季节气候干燥时,树体含水量减少,遇到低温后往往受冻严重。因此在冻前10～15天给果树灌一次透水,提高土壤湿度,保持根系的正常生理活动。土壤冻结后切忌灌水,否则增厚冻土层,加剧冻害。 2.保护枝干,树体涂白 在采
In addition to the cold affected by the cold apple tree invasion, but also with the tree potential, age, cultivation and management level are closely related. Therefore, to prevent apple tree from freezing, we must take the following anti-freezing measures on the basis of strengthening integrated management, enhancing tree vigor and increasing cold resistance of the tree: 1. Pre-freezing irrigation When the autumn and winter dry climate, the tree water content decreases, Encounter cryogenic severe cold often encountered. Therefore, 10 to 15 days before freezing to the fruit irrigation once pervious to improve soil moisture, to maintain the normal physiological root activity. Soil should not be irrigated after freezing, or thickening of frozen soil layer, aggravating frost damage. 2. To protect the branches, trees painted white mining