Observe and tell me your situation.

In 2006, compared with Beicun, Nancun had more cultivated land and less abandoned cultivated land. There are more farmers and agricultural technicians in Nancun than in Beicun, and fewer migrant workers than in Beicun. 1998-2006, the agricultural output value of Nancun increased year by year, and it was always higher than that of Beicun. The agricultural output value of Beicun showed an upward trend during the period of 1998-2002, and gradually decreased in 2002-2006 (it is not clear whether the black line above is Nancun or Beicun). The reason for this situation may be that the increase of migrant workers leads to the decrease of farmers, and it is necessary to increase the number of farmers in order to increase the agricultural output value.