低山丘陵地区油茶林地土壤水分特性分析  

Analysis on soil moisture characteristics of Camellia oleifera forest at low mountain and hill areas

作　　者：周寅杰[1] 王瑞辉[1] 陈志钢[2] 钟飞霞[1] 廖文婷[1] 

机构地区：[1]中南林业科技大学,湖南长沙410004 [2]北京林业大学,北京100083

出　　处：《经济林研究》2013年第1期7-12,共6页Non-wood Forest Research

基　　金：教育部高校博士点基金项目"油茶干旱少雨期水分利用规律研究"(20124321110005);北京林业大学森林培育"985"平台开放基金项目"油茶水分管理技术"(0001108001)

摘　　要：为了掌握油茶林地的土壤水分特征,从而为油茶林的科学灌溉提供参考依据,采用比重计法、环刀法等方法,测定了长沙天际岭地区油茶林地的土壤水分特征值。结果表明:土壤砂粒含量,上坡位大于下坡位;物理性黏粒含量;下坡位平均为45.23%,上坡位平均为32.53%,下坡位大于上坡位,同一坡位上各土层物理性黏粒含量相差不明显;土壤容重,上坡位大于下坡位;孔隙度等其他土壤特征值,下坡位均大于上坡位;田间持水量、毛管持水量等项土壤持水量指标值,下坡位均明显优于上坡位。油茶生长易于利用的水分在5、7～9月出现不同程度的亏缺状态,5、7、8、9月的水分亏缺量分别为4.1、17.39、7.02、22.64 mm。In order to study soil moisture characteristics of Camellia oleifera forestry, and offer a reference for scientific irrigation of C. oleifera forest, the characteristic values of soil moisture at C. oleifera forest of Tianjiling of Changsha were determined by using densimeter method and ring knife method. The results show that sand content in soil at the upper hill position is more than that at the lower hill position. Content of physical clay at the lower hill position is 45.23%, which is higher than that at upper hill position （32.53%）, while contents of physical clay in different layers at the same position have no obvious difference. Soil bulk density at the upper hill position is higher than that at the lower hill position, but porosity and other soil characteristic value is on the contrary. The soil moisture capacity indexes at the down hill position are obviously better than that at the upper hill position. Growth easy use water in C. oleifera has a deficit at different degrees at of Oil-tea Camellia woods in May, July, August and September, the quantities of deficits are 4.1, 17.39, 7.02, 22.64 mm respectively.

关 键 词：油茶 土壤水分 持水特性 

分 类 号：S606.1[农业科学—园艺学] S794.4