我所于80年代由美国引进CG系苹果新矮砧,经试验试栽证明,作中间砧嫁接苹果,其生产性能优于当前生产中应用的M_9和M_(26)等。现将其主要型号简介如下,供生产者选用。 CG系砧木的主要特点是,嫁接苹果亲和力良好;树体直立,中间砧段无明显粗大,固地性强;幼树期枝量多,成形快,园相整齐,树体大小介于M_(26)与MM_(106) In the 1980s, the United States introduced a new CG an apple rootstock, tested by the pilot proved that the intermediate grafting apple, its production performance is better than the current production applications M_9 and M_ (26) and so on. Now its main model is as follows, for producers to choose. The main characteristics of CG rootstocks are grafted apple with good affinity; the tree body is erect, the middle anvil section is not obviously coarse and strong, and the solidity is strong; 26) and MM_ (106)