Liu Ziqiang, Li Jing, Lu Qi, Liu Yansui. Evolution Rules of Urban-rural Development and Inspiration for China’s Agriculture. Chinese Journal of Population, Resources and Environment, 2009, 7(3): 48-54. Abstract: Based on urban-rural contrast coefficient,this article designs the agriculture relative development index(ARDI) as indicators measuring the intensity of urban-rural dual structure which is comparable among the countries of the world.This article calculates ARDI of 40 countries from 1980 to 2004.The result shows that ARDI in the developed countries and most of the middle-income countries are rising and yet there are declines in most of the low-income countries.The result also showed that most countries’ ARDI... Keywords: dual economic structure; the agriculture relative index; urban-rural relation;Liu Ziqiang, Li Jing, Lu Qi, Liu Yansui. Evolution Rules of Urban-rural Development and Inspiration for China’s Agriculture. Chinese Journal of Population, Resources and Environment, 2009, 7(3): 48-54. 摘要: Based on urban-rural contrast coefficient,this article designs the agriculture relative development index(ARDI) as indicators measuring the intensity of urban-rural dual structure which is comparable among the countries of the world.This article calculates ARDI of 40 countries from 1980 to 2004.The result shows that ARDI in the developed countries and most of the middle-income countries are rising and yet there are declines in most of the low-income countries.The result also showed that most countries’ ARDI... 关键词: dual economic structure; the agriculture relative index; urban-rural relation