The Lagrangian Function could be established to solve the maximum problem of the small-scale peasant producers under discrete time,yet the Lagrangian wayscannot settle the difficult problem that the value of one variable is zero in the corner solution.

• 离散时间下的小农生产者最大化问题可以建立拉格朗日函数,而拉格朗日方法又无法解决角点解问题中有一变量的取值为零这个难题。