南亚热带丘陵赤红壤水库容状况及水分问题研究  

Soil water volumetric capacity and soil water problems in hilly latored soil of south subtropics

作　　者：郭庆荣[1] 钟继洪[1] 张秉刚[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：《农业系统科学与综合研究》2004年第4期254-257,共4页System Sciemces and Comprehensive Studies In Agriculture

基　　金：国家自然科学基金(49371035);广东省重大专项项目(A20604;2002A2040901);广东省自然科学基金(970386;000188;031285);广东省环保局科技研究开发项目(2001-14);广东省农业环境综合治理重点实验室项目

摘　　要：分析了南亚热带丘陵赤红壤总库容、贮水库容、有效水库容和通透库容的特征及差异,0cm～100cm土层的总库容为4550 4m3/hm2,比华北潮土的小9 53%,比东北黑土的小11 06%;0cm～100cm土层的贮水库容为3265 7m3/hm2,比华北潮土的小16 84%,比东北黑土的小23 16%;有效水库容为1474 8m3/hm2,比华北潮土的小29 03%,比东北黑土的小29 77%;0cm～100cm土层通透库容,丘陵赤红壤为1284 7m3/hm2,比华北潮土大181 7m3/hm2,比东北黑土大424 7m3/hm2。阐述了其目前存在的水分问题。表5,参8。Characteristics and differences of soil water total volumetric capacity,water-storage volumetric capacity,available water-storage volumetric capacity and transmission volumetric capacity in hilly latored soil of south subtropics are described.The total volumetric capacity of hilly latored soil in 0cm～100cm soil layer depth is 4 550.4m^3/hm^2,it is 9.53% smaller than that of chao soil(ochrepts in soil taxonomy)in north China,it is 11.06% smaller than that of the chernozem in the northeast of China.The water-storage volumetric capacity of hilly latored soil in 0cm～100cm soil layer depth is 3 265.7m^3/hm^2,it is 16.84% smaller than that of chao soil in north China,it is 23.16%smaller than that of the chernozem in the northeast of China.The available water-storage volumetric capacity of hilly latored soil in 0cm～100cm soil layer depth is 1 474.8m^3/hm^2,it is 29.03% smaller than that of chao soil in north China,it is 29.77% smaller than that of the chernozem in the northeast of China.But the transmission volumetric capacity of hilly latored soil in 0cm～100cm soil layer depth is 1 284.7 m^3/hm^2,it is 181.7 m^3/hm^2 bigger than that of chao soil in north China,it is 424.7 m^3/hm^2 smaller than that of the chernozem in the northeast of China.At last,some existing water problems were analysed in this paper.

关 键 词：丘陵赤红壤 季节性干旱 土壤水库容 土壤水分 

分 类 号：S152.7[农业科学—土壤学]