农学学报2025，Vol.15Issue(9)：50-57,8.
桂西北岩溶地区任豆凋落物理化特性与土壤肥力的相关性
Correlation Between Physical and Chemical Characteristics of Zenia insignis Litter and Soil Fertility in Karst Area of Northwest Guangxi
摘要
Abstract
To explain the effect of Zenia insignis litter on soil fertility and its mechanism,the relationship between soil fertility and physicochemical properties of different plant litter and soil were studied through the relative determination and correlation analysis.From August 2022 to September 2023,the main distribution points of Zenia insignis plantation were selected as the investigation and research plots in Yizhou District and surrounding counties and districts of Hechi City,Guangxi.The results showed that:(1)from the perspective of basic soil physical and chemical characteristics,the soil fertility of Pteroceltis tatarinowii and Zenia insignis plots was better than that of Cinnamomum burmanni.(2)From the perspective of decomposition rate of litter,the order of decomposition rate of different plant litter was Pteroceltis tatarinowii>Zenia insignis>Cinnamomum burmanni.(3)The organic matter content in litter had a significant positive correlation with the total phosphorus and available phosphorus content in soil,and a highly significant negative correlation with the C/P in soil.The total phosphorus content and C/P in litter were significantly positively correlated and negatively correlated with C/N in soil,respectively.There was a significant negative correlation between C/N in litter and C/P in soil.The N/P of litter was significantly positively correlated with the total nitrogen and alkaline nitrogen content in the soil,while the other measured indexes of litter were not significantly correlated with the physical and chemical indexes of soil.From this,it could be seen that the physical and chemical characteristics of litter had an important impact on soil fertility changes.Planting Zenia insignis could improve the fertility level of soil in karst areas to a certain extent through the litter.The research aims to provide theoretical support for vegetation restoration in karst areas and the protection of rare wild plants unique to China,as well as to prevent the deterioration of the ecological environment.关键词
桂西北/岩溶地区/任豆/凋落物理化特性/土壤肥力Key words
northwest Guangxi/karst area/Zenia insignis Chun/physical and chemical characteristics of litter/soil fertility分类
农业科技引用本文复制引用
苏黎颖,马秋妮,陆素芬,陈业佳,罗彩妹,覃勇荣..桂西北岩溶地区任豆凋落物理化特性与土壤肥力的相关性[J].农学学报,2025,15(9):50-57,8.基金项目
广西自然科学基金项目"广西不同植被恢复模式对石漠化地区生态恢复效果的比较研究"(桂科自0832273) （桂科自0832273）
校地校企合作科技创新平台"桂西北地方资源保护与利用工程中心"(桂教科研[2012]9号) （桂教科研[2012]9号）
河池学院高层次人才科研启动费项目"桂西北岩溶地区石漠化治理优化模式研究"(XJ2018GKQ016) （XJ2018GKQ016）
广西高校大学生创新创业训练计划项目"任豆凋落物理化特性对岩溶地区土壤微生物多样性的影响"(202310605036). （202310605036）
