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经国家科委批准,由中国农学会、中国农科院、西北农业大学联合主持,中国耕作制度研究会和西北农大干旱半干旱研究中心主办的国际早地农业学术讨论会(ISDF),于1987年9月18日至22日在陕西杨陵隆重召开。中国农业科学院卢良恕院长致开幕词。来自联合国粮农组织(FAO)及中国、美国、苏联、印度、荷兰等国家的近97名专家、
Approved by the State Science and Technology Commission, the International Symposium on Early-Farm Agriculture (ISDF) hosted by China Agricultural Association, Chinese Academy of Agricultural Sciences, Northwest Agricultural University, China Farming System Research Institute and Northwest Arid and Semi-Arid Research Center, 1987 September 18 to 22 in Yangling, Shaanxi solemnly held. President Lu Liangshu of Chinese Academy of Agricultural Sciences delivered opening remarks. Nearly 97 experts from the United Nations Food and Agriculture Organization (FAO) and China, the United States, the Soviet Union, India, the Netherlands and other countries,