南亚热带丘陵赤红壤水分问题探讨  

Water Problems and Resolutions in Hilly Latored Soil Area of Soth Subtropics

作　　者：郭庆荣[1] 钟继洪[1] 谭军[1] 高淑涛[1] 

机构地区：[1]广东省生态环境与土壤研究所,广东广州510650

出　　处：《农业现代化研究》2004年第4期302-305,320,共5页Research of Agricultural Modernization

基　　金：国家自然科学基金(49371035)<南亚热带丘陵赤红壤水分循环及有效性研究>;广东省重大专项项目(A20604;2002A2040901);广东省自然科学基金(000188;031285);广东省环保局科技研究开发项目(2001-14)。

摘　　要：分析了南亚热带丘陵赤红壤区受气候因素的制约形成明显的湿季和旱季,阐述了季节性干旱、土壤水分特征因子和土壤物理性质退化导致的水分问题,提出了农业可持续发展的土壤水分调控生物或工程技术措施,如:农林复合生态系统的构建、减少地表径流、提高降雨入渗率、以肥调水、覆盖技术、人工保水措施、节水灌溉技术等。There are obvious wet seasons and dry seasons because of the climatic characteristics in Hilly Latored Soil Area of South Subtropics. Water problems resclted from seasonal drought and soil moisture characteristic and soil physical degradation in Hilly Latored Soil Area of South Subtropics are described. Some biological or engineering techniques and measurements of regulation and managing soil moisture are proposed to improve soil moisture and prevent or decrease soil evaporation for agriculture sustainable development, for instance, construction of agroforestry, interception precipitation, increasing the amount of water infiltration, adjustment with fertilizer, cover techniques, artificial water retention measurements with wateradsorbed resin, new irrigation technologies.

关 键 词：丘陵赤红壤 季节性干旱 土壤物理性质退化 

分 类 号：P941.2[天文地球—自然地理学] S155.25[农业科学—土壤学]