关键词: “三农”问题, 机理分析, 劳动力单向流动

Abstract: Thinking for issue of "three agriculture" should not merely stay on economic level,but be enhanced to political level.It is not simple economic issue but important political one.The problem for the "three agriculture" is long-term one-way circulation of elemental resources,especially labor one-way circulation is the fundamental reason contributing to "three agriculture".

Key words: "three agriculture", mechanism analysis, labor one-way circulation