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根据中美农业科技协定,美国农业部水土保持局雷肯道尔夫博士(Frankc. Rickendorf)和弗曼尼克工程师(Gary Formanek)于1986年9月28日至10月11日在我国山西省雁北地区进行考察访问。在此期间,先后对阳高、左云、右玉、朔县、应县、浑源县等地的水利水保工程及官厅水库进行了考察。 考察组对山西雁北地区各县所做的水利水土保持工程给予高度的评价,对左云县的小流域综合治理、右玉县的大面积造林、风蚀研究及恒山
According to the agreement on agricultural science and technology between China and the United States, Dr. Frankc. Rickendorf and Gary Formanek of USDA Soil and Water Conservation Bureau, from September 28 to October 11, 1986, North region inspection visit. During this period, he successively conducted inspections on water conservancy and water conservancy projects and Guanting Reservoir in Yanggao, Zuyun, Youyu, Shuo County, Ying County and Hunyuan County. The inspection team highly appraised the water conservancy projects of water conservancy and soil conservation in all counties in Yanbei of Shanxi Province. The comprehensive management of small watershed in Zuoyun County, large area afforestation and wind erosion in Youyu County,