一、绪言在很多实例中,插条上根的形成受其本身所带叶子的影响.据指出:叶以物质供应插条促进发根及(或)其以后的生长.除非同时供应生长素和糖类,否则,在无叶的插条上往往不形成根.据兰德(Nanda)等报导:只把插条放在水或生长素中培养,没有生根;但一旦使用葡萄 INTRODUCTION In many instances, the formation of roots on cuttings is influenced by the leaves themselves, and it is stated that the leaves promote the growth of the hair roots and / or their subsequent cuttings by the supply of material unless both auxins and Sugars, otherwise roots are often not formed on leafless cuttings. According to Nanda et al., Only cuttings are grown in water or auxin without rooting; however, once grapes are used