Exploring the Effect of Soil Fertility Quality on the Quality of Ligusticum chuanxiong Based on Minimum Data Set

LI Ruirong; ZHANG Yayu; YANG Kefang; ZHOU Jixin; JIN Mengzhen; WU Lingmei

doi:10.15933/j.cnki.1004-3268.2025.02.009

Abstract：By optimizing and selecting the minimum dataset(MDS)to maximize the characterization of soil fertility quality,this study aims to explore the ecological relationship between soil fertility quality and the formation of Ligusticum chuanxiong quality,in order to improve soil quality and achieve high-quality cultivation of Ligusticum chuanxiong.Ligusticum chuanxiong and rhizosphere soil were collected from 114 sampling points in 38 plots in Meishan,Pengzhou,Qionglai,and Shifang cities in Sichuan Province.The content of 21 soil indicators and 5 effective component indicators was measured,and the Ligusticum chuanxiong comprehensive quality index(AQI)and soil fertility quality index(SQI)were calculated.The results showed that the selected MDS contained six indexes of nitrate nitrogen,available phosphorus,available magnesium,available iron,available cadmium and total iron content,with a cumulative contribution rate of 81.83%.There were significant differences in soil fertility quality among the four cities.The comprehensive index score of soil fertility quality for Ligusticum chuanxiong in Pengzhou was the highest,at 0.53,while that for Meishan was the lowest,at 0.34;The comprehensive quality index of Ligusticum chuanxiong in Pengzhou was also the highest,at 0.46.The correlation analysis between the comprehensive index of soil fertility quality and soil indicators showed that the content of available phosphorus,available iron,nitrate nitrogen,and total iron were important factors for improving soil fertility quality.Combined with the redundancy analysis results,the content of available phosphorus and available iron was a key factor affecting the formation of Ligusticum chuanxiong quality and soil fertility quality.In summary,a soil fertility evaluation system for Ligusticum chuanxiong has been established based on MDS.The high-quality planting process of Ligusticum chuanxiong requires key regulation of available phosphorus and available iron content in the soil.