民间有句谚语叫做“冬刮皮,好吃梨”。其实不仅是梨树,对苹果、柿、枣等多种果树,在冬春季节刮除粗皮,都可收到良好效果。果树随着树龄的增长,外层树皮会因老化而变的很粗糙,失去弹性和伸展性,不能适应树干加粗生长的需要,会影响形成层向内分化木质部、向外分化韧皮部的进程,抑制了果树生长;并且在冬季,危害果树的许多害虫(卵、蛹、幼虫成虫等不同生态)及病菌,隐居在果树的粗翘皮裂缝里休眠越冬,如山楂红蜘蛛以受精成虫在树皮缝内越冬,如果此时除掉一头受精成虫就等于消灭了一窝害虫;因此,抓住这一 Folk proverb is called “winter shaving skin, delicious pear ”. In fact, not only pear, apple, persimmon, jujube and other fruit trees, scraping the skin in winter and spring, can receive good results. Fruit trees with age, the outer bark will become rough due to aging, loss of elasticity and extensibility, can not adapt to the needs of trunk tree growth, will affect the formation of internal differentiation of xylem, outward phloem process , And inhibited the growth of fruit trees; and in winter, many pests (eggs, pupae, adult larvae and other eclosions) and germs that endanger fruit trees dormant in wintering cracks in the fruit trees, such as hawthorn spider moths Winding in the seam, if at this time to get rid of a fertilized adult is equivalent to the elimination of a nest of pests; Therefore, to seize this