一九八四年十一月十日至十二月三日,辽宁省农垦果树考察组赴英国对其果树的无病毒栽培情况进行了考察,现将情况介绍如下。 (一) 英国对果树病毒的研究开展较早。一九四四年发现苹果花叶病,一九四九年位于肯特郡的东茂林试验站制定研究计划,设立课题。一九五三年制定无病毒母木树 From November 10 to December 3, 1984, the fruit and vegetable inspection team of Liaoning Province Reclamation Farm visited the UK to examine the virus-free cultivation of its fruit trees. The situation is as follows. (A) Britain carried out research on fruit tree virus earlier. Apple mosaic disease was discovered in 1944, and a research project was set up at the East Maolin Experimental Station in Kent County in 1949 to establish a project. In 1953 the development of virus-free mother wood