华中农业大学学报2025，Vol.44Issue(3)：84-90,7.DOI:10.13300/j.cnki.hnlkxb.2025.03.010
稻-鸭-虾模式下稻田土壤肥力变化特征
Characteristics of changes in soil fertility in paddy field under model of rice-duck-crayfish
摘要
Abstract
The effects of the rice-duck-crayfish(CDR)model on soil fertility in paddy fields were studied by using field experiments and sampling tests from 2022 to 2023.The physical,chemical,and bio-logical properties of soil after harvesting rice were compared between CDR and the rice monoculture(RM)model.The fertility of soil under two models was comprehensively evaluated by combining fuzzy compre-hensive evaluation method and simple linear scoring method.The results showed that the content of micro-bial biomass nitrogen in soil significantly decreased by 53.27%after 2 years of CDR.The content of organ-ic matter,total nitrogen,available potassium,and microbial biomass carbon in soil had an increasing trend,while the pH,the content of available nitrogen,available phosphorus,acid phosphatase,and alka-line phosphatase in soil had a decreasing trend,but there was no significant difference.All indexes except for the content of microbial biomass nitrogen had a decreasing trend to varying degrees compared with RM.There was no significant difference between CDR and RM in term of soil fertility.However,CDR had an upward trend in the soil fertility index of paddy fields,with an increase of 7.94%,while the soil fertility in-dex of RM decreased,and the soil fertility index of CDR was 3.03%higher than that of RM in 2023.It is indicated that there was no significant change in soil fertility in paddy fields under two years of CDR.关键词
稻田综合种养/土壤性质/土壤肥力/土壤肥力指数Key words
integrated farming in paddy field/soil properties/soil fertility/soil fertility index分类
农业科技引用本文复制引用
吴玲云,马天桥,张万洋,汪金平,李小坤..稻-鸭-虾模式下稻田土壤肥力变化特征[J].华中农业大学学报,2025,44(3):84-90,7.基金项目
湖北洪山实验室重大项目(2021hszd002) （2021hszd002）
