我国自从发现一些植物环剥后可以成活,再生出新皮以来,几年来已经陆续对有些树木进行了试验。但是,对于环剥后的形态结构变化,除了少数几种树木外,一般都未有系统报道。我们对14种种子植物进行了剥皮试验,发现不同的植物剥皮后的形态结构变化差别很大,再生作用也不尽相同。材料和方法本试验于1984年6—7月在北大校园中进行,选取银杏(Ginkgo biloba L.)、白皮松(Pinus bungeana Zucc.)、苹果(Malus pumila Mill.)、桑树(Morus alba L.)、洋槐 Since we discovered that some plants can survive after circumcision, a few new trees have been regenerated, and some trees have been tested successively in recent years. However, morphological changes after girdling are generally not reported systematically, except for a few species of trees. We carried out skin test on 14 kinds of seed plants and found that the morphological changes of different plants after peeling are very different and the regeneration effects are also different. MATERIALS AND METHODS The experiment was conducted at the campus of Peking University from June to July, 1984. Ginkgo biloba L., Pinus bungeana Zucc., Apple (Malus pumila Mill.), Mulberry (Morus alba L.) ,locust