从农民到农民工的流程“力学”分析——以贵阳街头“背篼”为例

“背篼”指一群来自贵州贫困农村地区在贵阳街头从事体力劳动的农民工。他们进城打工是因为贫穷使农村产生了推力，城乡收入上的巨大差距以及城市对“背篼”的需求又使城市产生了拉力，这一推一拉便构成了“背篼”进城的动力。除了动力外，“背篼”在进城中面临着排斥力、动力与排斥力的合力成为决定“背篼”是否进城的最终因素。动力和排斥力不能精确量化，其大小依靠“背篼”自身判断。对于“背篼”而言，一般存在着动力周期，周期内，动力总是大于排斥力的，当周期结束以后，排斥力会逐渐超过动力。

A "Mechanic" Analysis of the Flow from Farmers to Farmer Workers: Based on the "Back-baskets" in Guiyang

Back- baskets are those who come from the rural areas to cities for money by their strength. They make some contributions to urban development, but suffer from prejudice and even discrimination in cities. This paper studies the dynamics, repulsions and dynamic cycles concerned.