苹果高接换头套塑料袋可提高成活率苹果高接由于砧穗两者之间粗度差异较大，往往出现接口愈合不良的现象，加之易受各种病虫的为害，严重制约树的生长和产量的恢复。对４～５年生国光品种幼树，于４月下旬在直径１～２ｃｍ粗的枝条上改接换头，接穗品种为宁丰和寒富。采用... Apple high interchangeable plastic bags can improve the survival rate of Apple high due to the rootstock spike between the larger differences in the thickness of the interface often appear poor healing phenomenon, coupled with vulnerability to various pests and severely restrict the growth of trees And the recovery of production. 4 ~ 5 years Guoguang species saplings, in late April in the diameter of 1 ~ 2cm thick branches to change the head, scion varieties Ningfeng and Hanfu. use...