英国农业科学家对果树病毒的研究开展较早.在1944年他们就发现了苹果花叶病,大约在这前后,英国采取高接换头方法推广“兰篷勋爵”品种,造成了小果病和软枝病大发生,几乎毁掉了该品种的全部果树1949年英国东茂林试验站制定了苹果花叶病的研究计划,并设立课题进行专项研究.研究结果发现,苹果有23种病毒,对苹果生产影响很大. British agricultural scientists carried out earlier research on fruit tree viruses, and in 1944 they discovered apple mosaic disease. Around this time around, Britain adopted a highly interchangeable method to promote the “Lord Lanyard” variety, causing small fruit disease and Almost all the fruit trees of the breed were ruined in 1949. The research program of apple mosaic disease was set up in East Maolin Experimental Station of the United Kingdom in 1949 and a special project was set up to study the findings.The results showed that there are 23 kinds of viruses in apple, Great impact on apple production.