Exports of wheat and soyabeans nearly tripled in the 1970s, thanks to the weakness of the dollar after America abandoned the gold standard in 1971, and the Russian wheat deal in 1972, when America sold the Soviet Union about 440m bushels of wheat for around $700m. Until then the Soviets had imported hardly any American foodstuffs. The sudden bonanza was such that farmers bought more and more land, with more and more debt. This went well until interest rates jumped up, the dollar strengthened and exports to the USSR were halted after the invasion of Afghanistan. Farmers’ biggest asset, land, dropped in value, which in turn increased their liabilities until they became so big that they could not stay in business.
在1971年美国废除了金本位,同时于1972年结束了与前苏联每年约4.4亿蒲式耳市值7亿美元的小麦交易后,美元开始贬值,这促使了小麦和黄豆的出口量在70年代猛增三倍。在那时之前,苏联几乎没有进口过任何美国食品。农民用贷款的方式购买了越来越多的土地,这带来了出乎意料的好处。在利率上升之前,这一切发展得很顺利,美元开始变得强势,在入侵阿富汗后,美国对前苏联的出口被禁止。农民最宝贵的财富,也就是土地开始贬值,农民的债务也相对增加了,最终债台高筑不得不破产。