The middle !One River and Its Two Branches" river basin area is the largest agriculture region and also is one of most seriously desertified regions in Tibet. The
agricultural development in this region was hindered by
wind erosion of
farmland soil. In this paper, the impacts of reclamation, farming system change and soil fertility variation on wind
Erosion of farmland soil were analyzed. The result showed that blind reclamation, unreasonable farming system and weak agricultural basic construction have aggravated the farmland desertification. At present, over {50 000} hectares farmlands suffer from
Wind erosion, which occupied 47 percent of the total farmland area in the region and the ratio tends to enlarge. For controlling wind erosion in farmland, it is suggested to strengthen the basic construction of farmland, as such shelter belt, irrigation installation and so on must be perfect; to largely adopt intercropping or rotation of crop with herbage. The suitable farming system that combined modern farming system with conventional farming system and economy benefit with ecology benefit should be established. In details, the crop area that covers soil in winter and spring such as winter wheat, winter barley, rape, bean crop and bean forage should be enlarged.