Rural Labor Migration and Agricultural Output：A Static Equilibrium Model

Based on a dual-economic frame,the paper builds a static equilibrium model.Under the maximize profit hypothesis,it gives the quantitative relations between rural labor migration and agricultural output when the supply surplus labor of rural sector equals to the demand of non-rural sector.The quantitative relations show that the rural labor migration has negative effect on the agricultural output. The empirical research of Jiangxi province verifies this conclusion.