节水灌溉的环境效应研究现状及研究重点

对农田节水灌溉领域有关环境效应问题的国内外研究现状进行了分析,指出其研究不足,建议应从节水灌溉对农田生态环境影响效应的综合分析、节水灌溉条件下地表水及地下水水文循环变化规律、节水灌溉条件下地下水与土壤盐渍化关系机理、地膜覆盖节水增产机理及对环境的影响、考虑生态环境效应的节水农田水管理等方面进行重点研究

Present Situation of Research on the Impact of Water Saving Irrigation on Farmland Ecological Environment and Major Problems

Through analyzing the present situation of research on the impact of water saving irrigation on farmland ecological environment, this paper put forward some suggestions. The major problems should be researched as follows, comprehensive analyses of the impact of water saving irrigation on farmland ecological environment, the transform law among surface water, ground water, soil water in water saving irrigation, regular pattern of soil salinization in water saving irrigation, the mechanism of output increasing and impact on environment under plastic mulch, farmland water resource management considering farmland ecological environment.