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马铃薯栽培技术发展简史（１９１６～１９９１年）！９！６—１９４！年“美国马铃薯协会”成立于１９１６年，当时生活在北美的马铃薯种植者们都是自己培育马铃薯．】９２０年后期，美国联邦政府立法支持“国家马铃薯栽培计划”，这一Ｚ！一划促进了国家和各个州的试验研...
A brief history of potato cultivation technology (1916 ~ 1991)! 9! 6-194! The “American Potato Association” was founded in 1916 when potato growers who lived in North America cultivated their own potatoes. In the late 920’s, the federal government in the United States legislated to support the “National Potato Cultivation Plan”. This Z! A plan to promote national and state experimental research ...