农业生产对土壤盐渍化影响的经济分析

研究农业生产活动对土壤盐渍化的负面影响，有利于合理安排农业公共投资，促进生产与环境协调发展。在介绍我国土壤盐渍化概况的基础上，利用相关文献分析影响土壤盐渍化的不同因素，同时利用省级Panel数据和计量模型进一步探索农业生产活动对土壤盐渍化的影响。结果表明，灌溉程度、单位钾肥投入会对土壤盐渍化产生显著影响。单位耕地上灌溉面积越多，耕地发生盐渍化的概率也越高；同时单位面积上钾肥使用量越高，耕地发生盐渍化的概率也越高。此外，还在统计意义上发现排灌对抑制土壤盐渍化具有明显作用。因此，针对农业生产活动对农业生态环境可能造成的负面影响，进一步提出应该在增加农业公共投资的背景下，加强农业基础设施的建设，引导农户采用合理的农业生产方式，以协调我国农业生产与农业生态环境的和谐发展。

ECONOMIC ANALYSIS ON THE IMPACT OF AGRICULTURAL PRODUCTION ON SOIL SALINIZATION

Research on the negative impact of agricultural activities onto soil salinization is conducive to reasonably distribute public investment in agriculture,and to promote the coordinated development of production and the environment.Based on the status of soil salinity in our country,this paper analyzed the determinants of soil salinity.Furthermore, we explored the impact of agricultural activities on soil salinity using provincial panel data model.The results showed that irrigation and unit potash fertilizer input have significant impact on soil salinization.The larger irrigation area and potash fertilizer input per unit has,the higher soil salinization probability will be.In addition,the paper also found that irrigation and drainage have significant impact on soil salinization inhibition.Thus,addressing the negative impact of agricultural production activities on agricultural ecological environment and on the background of increasing agricultural public investment,this article suggests that the government should strengthen agricultural infrastructure construction and guide farmers to use reasonable agricultural production pattern in order to coordinate the development of agricultural production and agricultural ecological environment.