苹果树腐烂病研究协作组于一九七七年六月五日至九日在山东泰安山东省果树研究所召开了碰头会。参加单位有:中国农林科学院果树试验站、山东省果树研究所、山西省果树研究所、华北农业大学、河北省果树研究所、辽宁省营口农学院、吉林省果树研究所、黑龙江省园艺研究所、陕西省 The Apple Tree Rot Disease Research Collaboration held a meeting in Shandong Institute of Fruit Tree, Tai’an, June 5-9, 1977. The participating units are: Fruit Tree Experimental Station of Chinese Academy of Agriculture and Forestry, Shandong Fruit Tree Research Institute, Shanxi Fruit Tree Research Institute, North China Agricultural University, Hebei Fruit Tree Research Institute, Yingkou Agricultural College of Liaoning Province, Jilin Fruit Tree Research Institute and Heilongjiang Horticultural Research Institute Shaanxi Province