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根据全国“苹果外销生产基地”会议精神和农林部下达的组织“苹果矮化密植早实丰产成套栽培技术研究”专题协作的要求以及第二次协作会议的决定,于1976年12月5日至9日在青岛崂山县召开了“苹果矮化砧木的繁育和利用研究第三次协作会”。出席会议的有二十一个省(区)、
According to the spirit of the “Apple Export Production Base” in the country and the requirements of the special collaboration on the research on “Complete sets of cultivation techniques of apple dwarf and dense planting early yield” and the decision of the second cooperation meeting, from December 5, 1976 to Laoshan County, Qingdao on the 9th held a “apple dwarf rootstock breeding and utilization of the third collaboration.” Twenty-one provinces (districts) attended the meeting,