农业经济是在一定的自然条件下进行的,不能不受到该区地形、地貌、土壤、气候等自然因素的制约。因此,科学地认识自然,并合理地开发利用自然资源,就成为发展农业的先决条件。本文以吉县为例试述水土保持在发展山区农业经济中的作用和地位。一、概况吉县地处吕梁山南端,属黄土残垣丘陵壑区。所辖11个乡(镇),676个自然 The agricultural economy is carried out under certain natural conditions and can not but be constrained by natural factors such as topography, landform, soil and climate in the area. Therefore, a scientific understanding of nature and rational exploitation and utilization of natural resources have become the prerequisites for the development of agriculture. This article takes Jixian County as an example to discuss the role and status of soil and water conservation in developing mountainous agricultural economy. I. Overview Jixian County is located in the southern tip of Lvliang, a loess hilly and gully area. Under the jurisdiction of 11 townships (towns), 676 natural