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经国家科委批准,种子园害虫综合防治考察组1986年6月28日至7月5日对美国林木种子园害虫的综合防治情况进行了技术考察。在美国期间,先后访问了佐治亚州、南卡罗来纳、北卡罗来纳、俄勒岗、爱达荷和华盛顿等六个州12个县;参观了美国农业部林务局东南林业试验站、阿森林业科学试验室、西北部野外生态试验室、佐治亚州作物改良协会种
Approved by the State Science and Technology Commission, the study team of integrated prevention and control of the seed orchard pests conducted a technical inspection on the integrated prevention and control of the pests in the American forest seed tree from June 28 to July 5, During his stay in the United States, he visited 12 counties in six states including Georgia, South Carolina, North Carolina, Oregon, Idaho and Washington. He visited the Southeast Forestry Experiment Station of the USDA Forest Service and the Aspen Forestry Science Experiment Room, Northwest Field Ecology Laboratory, Georgia Crop Improvement Association