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1992年8月16日,美地质调查局内布罗斯加州办公室负责人麦克·舒尔特(Michael V.shulters)由水利部水质中心王敦春主任陪同,来汉王试验站参观。美国水文专家此次来访,是在1991年双方交流的基础上,对地下水水质问题断续进行讨论研究。双方交流了各国的试验情况,重点讨论了利用城市污水灌溉及使用农药、化肥对土壤及地下水引起的污染问题。两国研究的目的都是为城市污水用于灌溉寻求适合于土壤及地下水的最佳污水浓度;
On August 16, 1992, Michael V. Shuulters, head of the Nebraska State Office of the US Geological Survey, was accompanied by Director Wang Dunchun of the Water Quality Center of the Ministry of Water Resources to visit the Hanwang Experimental Station. The visit of the American hydrologists this time is on the basis of exchanges between the two sides in 1991 and discussions on intermittent groundwater quality problems. The two sides exchanged their experiences in various countries and focused on the pollution problems caused by the use of urban sewage irrigation and the use of pesticides and fertilizers on soil and groundwater. The purpose of the research of both countries is to find the best sewage concentration suitable for soil and groundwater for urban sewage irrigation.