植物营养与肥料学报2024，Vol.30Issue(6)：1185-1198,14.DOI:10.11674/zwyf.2024027
绿肥提高农田土壤有机碳固存机制的研究进展
Research advances on the effect and mechanism of green manure on improving soil carbon sequestration in cropland
摘要
Abstract
Soil carbon sequestration plays an important role in mitigating global climate change and maintaining farmland productivity.There are many determinants for soil carbon sequestration in cropland,such as climate(precipitation,temperature),soil biotic property(microbial communities and enzyme activities),and soil abiotic properties(physiochemical properties,agronomic management practices,aggregates).Cropland became carbon sink(positive sequestration)through increasing carbon input,reducing carbon output,and increasing carbon retention time in the soil.Green manures show multiple functions in such as nitrogen fixation,carbon sequestration,and regulation of soil microbial community structure.Incorporating green manure into crop production system could reduce the mineralization of soil organic carbon,increase the sources of soil organic carbon,regulate the process of soil aggregation,promote the accumulation of microbial biomass and residues,and improve the composition and metabolic activity of microbial communities,and these functions could be concluded into physical fixation(physical protection of aggregates),chemical fixation(chelating with soil minerals),and microbial carbon pump.The currently used key technologies to strengthen soil carbon sequestration efficiency of green manures mainly include:1)Selecting appropriate green manure varieties;2)Construction of'main crop+green manure'planting pattern to match the regional soil and climate conditions;3)Nutrient management technology to form synergic effect of green manure and other fertilizers;4)Optimized tillage methods.In the future,more researches should be focused on:1)The mechanism of soil carbon sequestration mediated by green manure;2)Breeding of high-efficiency carbon-fixing green manure germplasm resources;3)Establishing a long-term research system for the utilization of green manure;4)Construction of organic carbon management framework based on the application of green manure.关键词
绿肥/有机碳固存/碳固存机制/影响因素/强化固碳措施Key words
green manure/soil organic carbon sequestration/carbon sequestration mechanism/influencing factors/strengthen carbon sequestration measures引用本文复制引用
王国璀,胡发龙,李含婷,殷文,樊志龙,范虹,柴强,曹卫东..绿肥提高农田土壤有机碳固存机制的研究进展[J].植物营养与肥料学报,2024,30(6):1185-1198,14.基金项目
国家重点研发计划项目(2021YFD1700204) （2021YFD1700204）
国家绿肥产业技术体系项目(CARS-22-G-12) （CARS-22-G-12）
甘肃省优秀研究生"创新之星"项目(2022CXZX-646). （2022CXZX-646）
