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2007年9月6-7日,全国玉米高产示范现场会在山东省莱州市召开。这是全国召开的第一次玉米高产示范现场会议。农业部副部长危朝安说,高产示范活动的
September 6-7, 2007, the national high-yield corn demonstration site will be held in Laizhou, Shandong. This is the first corn high-yield demonstration field conference held nationwide. Vice Minister of Agriculture Dan Chaoan said that high-yield demonstration activities