Study on sustainable development model of ecological agricultureunder contour hedgerow in small watershed

The sediments in the rivers mainly come from slope farmland. According to government policy, land steeper than 25 is banned to cultivate, but due to farmland, fuels and feed shortage, the resources competition among economic development, agricultural industry and water and soil conservation in these areas is very strong. This paper presented an integrated technique system called contour hedgerow, a sustainable development model of ecological agriculture was established in farmland steeper than 25after returning to pasture in small watershed. The economic profit analysis of the model proved its effectiveness.