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对银杏无性繁殖的位置效应进行了研究。方差分析结果表明，位置效应在无性繁殖过程中能保持稳定，在品种之间有一定差异。随母树及接穗年龄的增长，位置效应越明显。不同无性繁殖方法有相似的位置效应，并具有显著的重现性。在自然状态下，当年生枝条生长的异质性可分为3个枝段。从嫁接到大量结实后，位置效应可经过强一弱一强阶段。采用基生复干作接穗或插条，或用修剪、复壮和扶梢等方法可以控制或消除位置效应，而且效果明显。
The location effect of asexual reproduction of ginkgo was studied. Analysis of variance showed that the location effect could be stable during the process of asexual reproduction, and there was a certain difference between varieties. With the growth of mother trees and scion age, the more obvious the location effect. Different cloning methods have similar location effects and have significant reproducibility. In the natural state, the heterogeneity of annual growth of branches can be divided into 3 branches. After grafting to a large number of sturdy, the location effect can be a strong one weak one strong stage. The use of basic rehabilitation of the scion or cuttings, or with pruning, rejuvenation and help and other methods to control the location of the pin effect, and the effect is obvious.