摘要
本文以宁夏东部干旱风沙区不同种植年限及种植密度柠条灌丛草地为研究对象,系统研究了土壤养分时空动态变化特征.从柠条灌丛种植年限来看,20cm土层以下土壤有机质、水解N、速效P、速效K等含量,均为6a生柠条灌丛草地高于11a生和17a生柠条灌丛草地;从柠条灌丛的种植密度分析,土壤养分含量均为10m带距的大于4m和6m带距,适合柠条灌丛草地植物的生长.
The dynamic changes of soil characteristics were analyzed in restoring pearshrub（Caragana）-grassland which were planted in different year and different density in Eastern Ningxia. From aspect of Caragana plant year, in 6a pearshrub-grassland, the content of soil organic, hydrolyzed N. P and K under 20cm layer, is higher than that of 11 a and 17a pearshrub-grassland; from aspect of Caragana plant density, the content of soil nutrient in 10m bandwidth pearshrub-grassland is higher than that of 4m and 6m bandwidth pearshrub-grassland, fit to growth of plant in pearshrub-grassland.
出处
《漳州师范学院学报（自然科学版）》
2006年第3期83-88,共6页
Journal of ZhangZhou Teachers College（Natural Science)
关键词
柠条
草地
土壤环境特征
Caragana
grassland
soil characteristics
