论文部分内容阅读
二十世纪六十年代中叶,许多学术团体和政府集团开始观察到世界粮食问题出现不祥之兆。布朗预测了到2000年的粮食供应,形势使人焦虑不安。在第二次世界大战之前,非洲、亚洲、拉丁美洲这些地区一直是食用谷物(大宗主食)的净输出国,现在却依赖进口,数量急剧上升,使人产生惊恐。据观察,许多发展中国家失去了粮食自给的能力。 1967年在美国总统科学顾问委员会领导下,首
By the mid-1960s, many academic groups and government groups began to observe the ominous signs of the world’s food problems. Brown predicted the food supply by the year 2000 and the situation was disturbing. Before World War II, Africa, Asia and Latin America, which remained the net exporters of cereal grains (staples staples), now rely on imports and their numbers have risen sharply, alarming. It has been observed that many developing countries have lost their ability to provide food themselves. In 1967 under the leadership of the U.S. Presidential Science Advisory Committee, the first