黄土高原地区小老树成因及其改造途径的研究——Ⅱ 土壤水分和养分状况及其与小老树生长的关系  

The status of soil moistures and nutrients in small-old-tree stands aud impact on tree growth

作　　者：侯庆春[1] 黄旭[1] 韩仕峰[1] 张孝忠[1] 

机构地区：[1]中国科学院水利部西北水土保持研究所

出　　处：《水土保持学报》1991年第2期75-83,共9页Journal of Soil and Water Conservation

摘　　要：根据野外测定资料,分析了小老树林地土壤水分和养分状况及其对树木生长的影响,结果表明,土壤水分亏缺是小老树形成的重要因子,土壤肥力不足和不平衡也是一个重要因子,它不仅影响树木生长,而且还影响土壤水分的利用。The status of soil moisture and nutrients in small-old-tree stan- ds and its impact on tree growh are analysed on the basis of field data. The result indicateed,the soil water deficits is an important factors for the small-old-tree,but low soil fertility and imbalance of nutrients are also significant factors.The inadequate soil nutrient not only impacted on tree growth,and on utilizing of soil moisture.

关 键 词：土壤水分 土壤养分 小老树 

分 类 号：S714[农业科学—林学]