银杏为高大乔木 ,自古以来 ,人们一向认为它生长慢、结种迟 ,故有“桃三杏四梨五年 ,无儿不建白果园”之说。随着科学技术的进步 ,发展银杏生产已经改变了利用实生苗繁殖的传统做法 ,逐步建立起“芽苗嫁接 ,合理施肥 ,环割促花 ,整形修剪”一整套环环相扣的配套技术 ,使银杏当 Ginkgo tree is tall, since ancient times, people always think that it grows slowly, ending late, it is “peach three apricot four pears for five years, no children do not build white orchard,” said. With the progress of science and technology, the development of ginkgo production has changed the traditional practice of using seedlings to multiply, and gradually establish a set of interlocking supporting technologies of “grafting sprout, rational fertilization, ring cutting and flower pruning” Make ginkgo