中国地质调查2026，Vol.13Issue(2)：84-93,10.DOI:10.19388/j.zgdzdc.2023.192
云南省姚安县姚安坝区土壤肥力特征及综合评价
Soil fertility characteristics and comprehensive evaluation of Yao'an basin area in Yao'an County of Yunnan Province
摘要
Abstract
As the largest basin area in Chuxiong Prefecture of Yunnan Province,Yao'an basin area is a core area for plateau-based modern agriculture.However,long-term intensive cultivation and improper fertilization have led to rapid soil fertility decline.To systematically assess the soil fertility status,the researchers collected 456 sur-face soil samples to analyze 11 fertility indicators,including soil organic matter(SOM),total nitrogen(TN),to-tal phosphorus(TP),total potassium(TK),boron(B),molybdenum(Mo),copper(Cu),zine(Zn),man-ganese(Mn),total iron(TFe),and pH.The modified Nemero index method was employed for comprehensive fertility evaluation.The results showed that soil pH value in the study area ranged from 5.01 to 9.19,with an o-verall weakly alkaline condition,but localized acidification occurred(accounting for 10.86％).SOM and TN contents were abundant and showed a highly significant positive correlation(r=0.914),and their spatial distri-butions were highly consistent,jointly influenced by parent material and agricultural activities.The comprehensive fertility evaluation indicated that the overall soil fertility in the area was classified as Grade Ⅱ(moderate),ac-counting for 98.96％of the area,with no Grade Ⅰ(fertile)soil,and Grade Ⅲ(infertile)soil was scattered spo-radically in the southeastern,south and northern parts of the basin area.This method effectively highlights the limiting role of fertility constraints,and the evaluation results could objectively reflect the current soil fertility sta-tus of the basin,that is high organic matter and nitrogen content,relatively insufficient trace elements,and mod-erate overall fertility.These findings could provide scientific basis for cultivated land protection and rational fertili-zation in Yao'an County.关键词
土壤/养分特征/综合肥力评价/修正内梅罗指数法/姚安县/云南省Key words
soil/nutrient characteristics/comprehensive fertility analysis/modified Nemero index method/Yao'an County/Yunnan Province分类
天文与地球科学引用本文复制引用
黄加忠,赵见波,郑洪福,白平雁,李文辉,时雨,王晓龙..云南省姚安县姚安坝区土壤肥力特征及综合评价[J].中国地质调查,2026,13(2):84-93,10.基金项目
中国地质调查局"云南省楚雄州弥兴街、韭菜地2幅1∶5万区域地质调查(编号:DD20230208404)"及"滇中大姚、姚安、南华、双柏四县土地质量地球化学调查(编号:ZD20220211)"项目联合资助. （编号:DD20230208404）
