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引言二千多年以前,砧木对梨树的效应似乎是可疑的(Hedrick,1921)。著名作者(Larson,1982)最近就一些砧木的效应(包括对树体大小和生长势,叶子和树体营养,冻害和病害的效应)评述了一些精选的文献资料。许多广泛试验、广泛采用梨砧受到限制。在美国,实生苗砧的利用几乎遍及各地,从罐头厂种子培育出的所谓栽培实生苗(通常以巴梨与作为授粉树的安久、鲍斯克、寇密
Introduction Two thousand years ago, the effect of rootstocks on pear trees seemed suspicious (Hedrick, 1921). A well-known author (Larson, 1982) recently commented on a few selected literature materials on the effects of some rootstocks, including effects on tree size and vigor, leaf and tree nutrition, frost damage and disease. Many widely tested, widely used pear anvils are limited. In the United States, the use of seedling anvils is almost everywhere, so-called cultivated seedlings grown from cannery seeds (usually as long as Barley and as long as polluting trees, Bosque, Koumi