| Sustainable agriculture is the leading direction of agricultural development in the world. It can realize good circulation of agriculture economy, and maintain the balance of agriculture ecosystem. As an important component of regional sustainable development, agriculture sustainable development can drive the sustainable development of regional population, resource, environment, economy and society. in this thesis, the forming background, conception & conation, and basic character of the sustainable agricultural theories are summarized firstly. Besides, the moves of study on sustainable agriculture at home & abroad are reviewed and summarized. Guided by the theories of sustainable agriculture, the productive conditions and present developing situations of agriculture in Dingxi area are evaluation objectively. Thus the limitations in eco-environmental construction and agricultural sustainable development in this region are concluded, which include the following nine points:甋erious soil erosion;? Fast spreading bf chemical fertilizer and pesticide pollution;nbalance of the circulation of nutritive elements in agricultural ecosystem; ?Frequent natural calamities; ?Inefficient exploitation of water & land resources;ï¹n appropriate structure of regional economy and agriculture planting;〦xcessive population growth and low educated;甽ack of funds for agriculture and backward capital installation;mperfection of urban & towns system and the mechanism of markets. Furthermore, the developing potentialities of agriculture in this region are discussed & stated, including:@The output of crops can be raised greatly;㎜arge potentiality of water resources exploitation;uge potentiality of biological resources exploitation;~Suitable conditions to develop animal husbandry;〣right prospects for industrialization of agriculture;?Vast prospects for eco-agriculture. Based on the above-mentioned contents, the author think that eco-environmental construction should be combined with agriculture economic development in Dingxi area, and that eco-environmental construction is the guarantee of agricultural economic development, while the agricultural economic development is the drive of eco-environmental construction. Last, the thought of eco-environmental construction & the developing direction of agriculture in this region, as well as the countermeasures to ecological environment construction & agricultural sustainable development are put forward according to the limitation & potentialities in agriculture development. |