摘要
为探究蕲春县蕲艾主要产区土壤肥力状况,在综合分析蕲春县蕲艾主要种植区土壤理化性质基础上,选取12个指标运用主成分分析法(PCA)结合各土壤肥力指标的Norm值以及指标间的相关系数建立最小数据集(MDS);绘制雷达图直观反映单项指标的肥力水平及采样区综合水平;利用综合指数模型分别计算总数据集(TDS)和最小数据集的土壤肥力质量指数(SFQI),并对两者进行线性分析。结果表明:组成研究区土壤质量评价最小数据集的指标为pH、速效钾、有效铁、有效锌、有效锰、有效铜和有效镁;雷达图反映14个种植区土壤的有机质肥力差异最大,碱解氮肥力差异最小,速效磷和有效铁整体含量较高,碱解氮整体含量最低;以Norm值计算各指标权重值得到的MDS-SFQI更敏感,且与TDS-SFQI的相关性更强,可以较好代表TDS;SFQI-MDS变幅为0.298~0.784,均值为0.565,变异系数为18.38%;SFQI-MDS均值最高的为漕河镇;SFQI-MDS值的聚类结果显示土壤肥力可分为4个等级:Ⅰ级(SFQI≥0.699)为优,占11.24%,主要分布在青石镇、八里湖和张榜镇;Ⅱ级(0.571≤SFQI≤0.680)为良,占43.82%,主要分布在漕河镇、横车镇和彭思镇;Ⅲ级(0.466≤SFQI≤0.557)为一般,占32.58%,主要分布在赤东镇和株林镇;Ⅳ级(SFQI≤0.42)为差,占12.36%,主要分布在管窑镇。建议蕲春县蕲艾在种植时应增施氮肥与钾肥、适量增加镁肥和钙肥施用量,同时配施有机肥,提高土壤肥力,改善土壤理化性质。
This study aims to explore the soil fertility in the main Artemisia argyi planting areas in Qichun county.To be specific, the soil physical and chemical properties in the main planting areas of A.argyi in Qichun county were analyzed.On this basis, 12 indexes were selected for principal component analysis(PCA) which was then combined with the norm value of each index and the correlation coefficients between the indexes to establish the minimum data set(MDS).The radar map was plotted to directly demonstrate the level of each index and the comprehensive level of the sampling sites.The comprehensive index model was used to calculate the soil fertility quality index(SFQI) of the total data set(TDS) and MDS(SFQI-TDS and SFQI-MDS, respectively), and linear regression of the two was performed.The results showed that the indexes that made up the MDS for soil fertility evaluation were pH, available potas-sium, available iron, available zinc, available manganese, available copper, and available magnesium.The radar map suggested the greatest difference in soil organic matter and smallest difference in available nitrogen among the 14 sampling sites.Moreover, the overall content of available phosphorus and available iron was high, while that of available nitrogen was the lowest.The SFQI-MDS which was yielded based on the weight of each index in MDS calculated with the norm value was more sensitive and the SFQI had stronger correlation with TDS-SFQI, which can better represent TDS-SFQI.SFQI-MDS was in the range of 0.298-0.784, with the average of 0.565 and variation coefficient of 18.38%.Caohe Town had the highest average SFQI-MDS.Clustering of SFQI-MDS value suggested that the soil fertility can be classified into 4 levels: level Ⅰ(SFQI ≥ 0.677) indicated excellent soil fertility, which accounted for 11.24%(mainly in Qingshi town, Balihu, and Zhangbang town);level Ⅱ(0.571≤SFQI≤0.680) meant good fertility, which made up 43.82%(mainly in Caohe town, Hengche town, and Pengsi town);level Ⅲ(0.466≤SFQI≤0.557) indicat
作者
马琳
王梓欣
蒋靖怡
苗玉焕
赵婷婷
郭兰萍
刘大会
MA Lin;WANG Zi-xin;JIANG Jing-yi;MIAO Yu-huan;ZHAO Ting-ting;GUO Lan-ping;LIU Da-hui(Resource Center for Chinese Materia Medica,Hubei University of Chinese Medicine,Wuhan 430065,China;National Agro-Tech Extension and Service Center,Beijing 100125,China;State Key Laboratory Breeding Base of Dao-di Herbs,National Resource Center for Chinese Materia Medica,China Academy of Chinese Medical Sciences,Bejing 100700,China)
出处
《中国中药杂志》
CAS
CSCD
北大核心
2022年第14期3738-3748,共11页
China Journal of Chinese Materia Medica
基金
国家中医药管理局青年岐黄学者支持项目
国家重点研发计划项目(2017YFC1700704)
湖北省现代农业产业技术体系项目(HBHZD-ZB-2020-005)
财政部和农业农村部国家现代农业产业技术体系项目(CARS-21)
湖北省教育厅中青年人才项目(Q20212001)。
关键词
蕲春
蕲艾
最小数据集
主成分分析
土壤肥力
Qichun county
Artemisia argyi
minimal data set(MDS)
principal component analysis(PCA)
soil fertility
