辽宁省金县大委家公社,为了解决外销需要和品种单一授粉不良的问题,用红星和红冠两品种,在砧木为三叶海棠的国光树上,进行高接换种。换种后的第4年,很多高接树生长停滞,并有140余株已衰退枯死。其症状表现与日本和南朝鲜报导的“高接病”极为相似。据柳濑春夫(1972)研究,高接病的病原系由两种潜隐病毒所致。如果把 In order to solve the problem of the need of export and the single pollination of the varieties, Liaoning Jinxian Dachang Commune adopted high-exchange seedlings on the Guoguang tree with rootstocks of Hypanthophus as the red root and red crown varieties. In the fourth year after the exchange, a lot of high-yielding trees have stagnated and more than 140 have died. Symptoms were similar to those reported in Japan and South Korea. According to Yanase (1972) study, the pathogen of high incidence of disease caused by two latent virus. If you put it