土壤2025，Vol.57Issue(4)：777-784,8.DOI:10.13758/j.cnki.tr.2025.04.007
宜宾市烟区土壤肥力指标及综合肥力评价
Evaluation of Soil Fertility Indexes and Comprehensive Fertility of Tobacco-planting Areas in Yibin City
摘要
Abstract
To investigate the main soil fertility indicators in the tobacco-growing areas of Yibin City,Sichuan Province,and provide a theoretical basis for scientific fertilization,in this study,94 soil samples(0-20 cm)were collected from four major tobacco-growing areas in Yibin,soil fertility indicator including pH,organic matter(OM),total nitrogen(TN),alkali-hydrolyzable nitrogen(AN),total phosphorus(TP),available phosphorus(AP),total potassium(TK),available potassium(AK),and available sulfur(AS)were determined and analyzed using descriptive statistics,principal component analysis,and fuzzy comprehensive evaluation methods.The results showed that average pH was 6.29,with 86.17%of the fields within the most suitable range.OM was generally rich,with 10.64%of the fields at the deficient level.TN was excessively high in 56.38%of the fields.AN was appropriate in 35.11%of the fields.TP was suitable in 31.91%of the fields,but deficient in 10.64%.AP was suitable in 78.72%of the fields.TK was excessively high in 54.26%of the fields.AK content was very rich,with 68.09%of the fields at the excessively high level.AS content was also very rich,with 94.68%of the fields at the excessively high level as well.There were differences in soil integrated fertility index(IFI)among the four main tobacco-growing counties,ranking as follows:Xingwen County(0.62,Grade II)>Junlian and Gong counties(0.59,Grade III)>Pingshan County(0.56,Grade III).The rational fertilization strategy should include"N precision control,P reasonable adjustment,categorized applying organic fertilizers,and strict control of S-containing fertilizer based on different soil characteristics and crop requirements.".关键词
宜宾/烟草/土壤肥力指标/综合肥力指数Key words
Yibin/Tobacco/Soil fertility indicators/Integrated fertility index(IFI)分类
农业科技引用本文复制引用
孙良虎,杨洋,梁辉,余佳敏,杨懿德,谢子煜,史子涵,李建刚,鄢敏..宜宾市烟区土壤肥力指标及综合肥力评价[J].土壤,2025,57(4):777-784,8.基金项目
中国烟草总公司四川省公司科技项目(SCYC202304)资助. （SCYC202304）
