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1990年6月,英国威尔斯大学农学院院长,土化教授亚当斯先生和两位美国农业旱作专家分别致函晋中行署专员孙庚午,表示愿意合作,共同研究和总结晋中创造的“蓄水覆盖丰产沟”的丰收经验。11月份,日本长野大学教授专门来晋中做了考察。国内外的有关专家均对丰产沟给予高度评价,普遍认为是荟萃了旱地耕作一切成功经验的典范,为丘陵山区充分发挥土地潜力,实现增产增收开拓了一条新路。丘陵山区耕地产量不高不稳的主要原因是干旱和
In June 1990, Dean of the College of Agriculture of the University of Wales, Professor Adams, a professor of indigenous chemistry, and two U.S. agricultural dry experts sent a letter respectively to Sun Gengwu, a commissioner of the Jinzhong Administration, expressing their willingness to cooperate in the study and conclusion of the Jinzhong-created Harvesting Experience of “Impounding Harvesting Ditch”. In November, a professor at Nagano University made a special trip to Jinzhong. Relevant experts both at home and abroad spoke highly of Fengkuanggou. It is generally believed that this model is a collection of all the successful experiences of farming in dry land. It has opened up a new road for hilly and mountainous regions to give full play to their land potential and increase production and income. The main reason for the low and unstable cultivated land in hilly and mountainous areas is drought and drought