现代农业研究2025，Vol.31Issue(6)：58-64,7.
水肥配施对茶苗土壤酶、CEC、pH值及内含物的影响
Effects of Combined Application of Water and Fertilizer on Soil Enzymes,CEC,pH and Internal Components of Tea Seedlings
摘要
Abstract
This study investigated the effects of different irrigation levels(five gradients)and fertilization rates(two levels)on soil enzyme activities(sucrase,catalase,protease),cation exchange capacity(CEC),pH,and tea seedling metabolites(tea polyphenols,caffeine,ash,and water extract)using a pot experiment with one-year-old Camellia sinensis var.assamica seedlings from Bingdao,Lincang,Yunnan.The results demonstrated that water and fertilizer management significantly influenced these parameters(P<0.05).Key findings include:(1)Under fertilization,soil enzyme activities(sucrase,catalase,protease)initially increased and then decreased with increasing irrigation,with sucrase activity peaking at 6.177 mL/g in the F1W4 treatment and protease activity reaching 4.263 g/kg in the F1W5 treatment;(2)Soil CEC was highest(19.624 cmol/kg)in the F1W4 treatment,indicating that optimal water-fertilizer coupling significantly enhances soil nutrient retention;(3)Soil pH was lowest(5.43)in the F1W5 treatment,suggesting that increased irrigation effectively acidifies the soil,creating a more suitable environment for tea growth;(4)Among tea metabolites,water extract and tea polyphenol contents peaked in the F1W4 treatment,while caffeine reached its maximum in the F1W3 treatment,demonstrating that appropriate water-fertilizer management improves tea quality.Correlation analysis revealed that soil enzyme activities were significantly positively correlated with CEC(P<0.05)but negatively correlated with pH(P<0.05),indicating that soil acidification may inhibit enzymatic activity.Additionally,tea polyphenol and caffeine contents showed significant positive correlations with soil enzyme activities(P<0.05),highlighting the regulatory role of soil fertility in metabolite accumulation.Based on integrated assessments of soil enzyme activity,CEC,pH,and tea metabolites,the F1W4 treatment was identified as the optimal water-fertilizer management strategy for tea seedlings.关键词
水肥配施/土壤酶活性/阳离子交换量/pH值/内含物Key words
water-fertilizer coupling/soil enzyme activity/cation exchange capacity/pH/inclusion分类
农业科技引用本文复制引用
郭俊伟,刘颖,孙宁浩..水肥配施对茶苗土壤酶、CEC、pH值及内含物的影响[J].现代农业研究,2025,31(6):58-64,7.基金项目
云南省科技厅"云南省文山市林下三七产业科技特派团"(项目编号:202404BI090010) （项目编号:202404BI090010）
