所谓卡尔多定律实际上是１９６６年卡尔多在一次演讲中提出的经验性规则。卡尔多试图用这些规则解释发达国家增长率的差异。卡尔多认为发达国家有着同发展中国家类似的二元经济结构：一方面是劳动生产率极低，有着大量剩余劳动力的农业部门，另一方面则是技术飞速发展，报酬递 The so-called Caldo’s law is actually an empirical rule put forward by Cardo in a speech in 1966. Cardo tried to explain these differences in growth rates in developed countries with these rules. Caldo believes that developed countries have a similar dual economic structure with that of developing countries: on the one hand, agricultural sectors with extremely low labor productivity and large surplus labor force, on the other hand, the rapid development of technology and the return of reward