中国农业大学学报2025，Vol.30Issue(12)：12-22,11.DOI:10.11841/j.issn.1007-4333.2025.12.02
耕作方式和有机肥对土壤有机碳及作物产量的影响
Effects of tillage practices and organic manure on soil organic carbon and crop yield
摘要
Abstract
To investigate the effects of different tillage practices and organic fertilizer application on soil organic carbon,active carbon components,and crop yield,a field experiment was conducted from 2022 to 2023.Split-plot design was adopted.Four treatments deep tillage(D),deep tillage with organic fertilizer(DM),rotary tillage(R),and rotary tillage with organic fertilizer(RM)were set by taking rotary tillage(R)as the control.The impacts of tillage practices and organic fertilizer application on soil organic carbon(SOC),its active components,carbon-related enzyme activities,soil carbon pool management index(CPMI),and crop yield were examined.The results showed that:1)Tillage practices and organic fertilizer application significantly influenced the soil organic carbon pool.Deep tillage significantly increased the SOC and active carbon components compared with rotary tillage,while organic fertilizer application significantly enhanced the SOC and active carbon fraction contents compared with non-application(P＜0.05).The SOC content under the deep tillage with organic fertilizer treatment was significantly higher than that under other treatments,which was significantly increased by 10.18％compared with the control(P＜0.05).2)Tillage practices and organic fertilizer application significantly affected soil carbon-related enzyme activities.Deep tillage significantly increased soil carbon-related enzyme activities compared with rotary tillage,and organic fertilizer application significantly enhanced these activities compared with non-application(P＜0.05).The soil catalase(S-CAT)activity in the＞20-40 cm soil layer under the deep tillage with organic fertilizer treatment was significantly higher than that under other treatments,significantly increased by 15.40％compared with the control(P＜0.05).3)Tillage practices and organic fertilizer application significantly influenced the annual yield of the wheat-maize double-cropping system and CPMI(P＜0.05).The deep tillage with organic fertilizer treatment exhibited significantly higher values in both parameters compared with other treatments.The annual yield under deep tillage with organic fertilizer increased by 9.40％compared with the control,while the CPMI increased by 28.50％(P＜0.05).4)SOC and its active fractions,carbon-related enzyme activities,and CPMI were significantly positively correlated with the annual yield of the wheat-maize double-cropping system(P＜0.05).Carbon-related enzyme activities showed highly significant positive correlations with SOC and its active fractions(P＜0.01),and CPMI was highly significantly positively correlated with carbon-related enzyme activities,SOC and its active fractions(P＜0.01).In conclusion,deep tillage combined with organic fertilizer application can stimulate soil carbon-related enzyme activities,promote the accumulation of soil-active carbon and organic carbon,and enhance the carbon pool management index,thereby achieving the dual goals of increasing carbon sequestration and crop yields.关键词
耕作方式/有机肥/土壤有机碳/产量/碳库管理指数Key words
tillage practices/organic manure/soil organic carbon/yield/carbon pool management index分类
农业科技引用本文复制引用
YANG Jie,ZHAO Mai,YOU Fuying,WANG Peiye,ZHOU Jing,XIE Ying,WANG Mengyao,ZHANG Xin,WANG Guiyan..耕作方式和有机肥对土壤有机碳及作物产量的影响[J].中国农业大学学报,2025,30(12):12-22,11.基金项目
国家重点研发计划(2022YFD1901300) （2022YFD1901300）
