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农村牧区的一些群众,为了防止猪、牛、羊等牲畜啃食幼树,常在树干上涂柴油、机油、沥青等油类。这样做对树木不仅起不到保护作用,而且还会使其枯萎死亡。因为在树干上涂油后,树干的表皮上就会形成一层油膜,堵塞或封闭了树皮表面的气孔,使树木与外界的气体交换发生困难,影响树木的正常呼吸。柴油、机油等都是有机溶剂,其油分子渗入树木的木质部以后,会溶解树木体
In order to prevent the animals such as pigs, cattle and sheep from eating saplings, some masses in the rural pastoral areas often apply diesel oil, oil, asphalt and other oils to the tree trunk. Doing so not only fails to protect the trees, it also causes them to wither and die. Because oiled on the trunk, the trunk of the epidermis will form a layer of oil film, blocking or closing the pores on the surface of the bark, the trees and the outside world gas exchange difficulties, affecting the normal respiration of trees. Diesel oil, oil and so are organic solvents, the oil molecules into the wood after the xylem will dissolve the tree body