基于整合分析土壤微生物量碳、氮含量对有机肥施用的响应特征  

The response characteristics of soil microbial biomass carbon and nitrogen contents to organic fertilizer by Metaanalysis

作　　者：莫艳芳 申云鑫 贺彪 施竹凤 唐加菜 杨童雨 翟恒 韩天华 陈齐斌[2] 杨佩文[1] MO Yan-fang;SHEN Yun-xin;HE Biao;SHI Zhu-feng;TANG Jia-cai;YANG Tong-yu;ZHAI Heng;HAN Tian-hua;CHEN Qi-bin;YANG Pei-wen(Institute of Agricultural Environment and Resources,Yunnan Academy of Agricultural Sciences,Kunming Yunnan 650205;College of Plant Protection,Yunnan Agricultural University,Kunming Yunnan 650201;Lijiang Branch of Yunnan Provincial Tobacco Company,Lijiang Yunnan 674100)

机构地区：[1]云南省农业科学院农业环境资源研究所,云南昆明650205 [2]云南农业大学植物保护学院,云南昆明650201 [3]云南省烟草公司丽江市公司,云南丽江674100

出　　处：《中国土壤与肥料》2024年第6期89-101,共13页Soil and Fertilizer Sciences in China

基　　金：云南省烟草公司科技计划项目(2023530700242002,2021530000242016);云南省科技计划重大科技专项(202202AE090015);国家自然科学基金(32060624);云南省专家基层科研工作站—杨佩文专家工作站(嵩明县,陆良县)(云人社通[2022]17号)。

摘　　要：土壤微生物量碳、氮含量是评价土壤肥力的重要指标。探究施用有机肥对土壤微生物量碳、氮含量的影响,旨在为生产中有机肥的科学施用提供指导。通过数据库共检索得高质量文献84篇,提取有效田间试验数据625组,以不施肥和单施无机肥为对照,采用Meta分析有机肥施用下土壤微生物量碳、氮含量和作物产量变化及其影响因素。研究结果表明:施用有机肥对土壤微生物量碳、氮含量以及作物产量具有显著的促进作用(P<0.05),分别增加41.14%[95%置信区间(CI):38.32%~44.04%]、46.46%(95%CI:43.02%~50.01%)和48.85%(95%CI:43.86%~45.03%)。与不施肥相比,施用有机肥可提高微生物量碳含量46.80%(95%CI:43.22%~50.46%),提高微生物量氮含量56.0%(95%CI:47.18%~65.37%),提高作物产量47.48%(95%CI:39.98%~55.36%);与单施化肥相比,有机肥施用下土壤微生物量碳含量可提高36.06%(95%CI:21.22%~52.71%),微生物量氮含量可提高40.80%(95%CI:30.42%~52.01%),作物产量可提高4.04%(95%CI:2.26%~5.46%);Meta分析结果表明,土壤微生物量碳、氮含量以及作物产量还受作物类型、氮肥施用量、有机肥施用方式、土壤初始pH、土壤类型以及气候条件的影响。进一步相关性分析结果表明,微生物量碳含量与土壤初始pH和年均温度呈显著正相关(P<0.05);土壤微生物量氮含量与土壤初始pH和氮肥施用量呈显著正相关(P<0.05);土壤微生物量碳氮比与年均温度呈显著正相关(P<0.05);作物产量与土壤微生物量碳、氮含量和土壤初始pH呈显著正相关(P<0.05)。有机肥对土壤微生物量碳、氮含量及作物产量具有显著的促进作用,建议结合作物类型、土壤条件和气候类型等因素,构建单施或配施有机肥的施肥技术,实现构建土壤健康微生态,最终实现肥料资源有效利用和提高土壤生产力的目的。Soil microbial biomass carbon and nitrogen contents were important indexes for evaluating soil fertility.Therefore,the response characteristics of soil microbial biomass carbon and nitrogen contents to organic fertilizer could provide guidance for the scientific organic fertilizer application.A total of 84 high-quality literatures were retrieved from the database,and 625 sets of valid field experiment data were extracted.The changes of soil microbial biomass carbon and nitrogen contents,crop yield under organic fertilizer application and their influencing factors were analyzed by Meta-analysis.The results showed that organic fertilizer significantly promoted soil microbial biomass carbon and nitrogen contents,crop yield(P<0.05),increasing by 41.14%[95%confidence interval(CI):38.32%-44.04%],46.46%(95%CI:43.02%-50.01%)and 48.85%(95%CI:43.86%-45.03%),respectively.Organic fertilizer increased microbial biomass carbon content by 46.80%(95%CI:43.22%-50.46%),microbial biomass nitrogen content by 56.0%(95%CI:47.18%-65.37%),and crop yield by 47.48%(95%CI:39.98%-55.36%),compared with no fertilization.Organic fertilizer combined with fertilizer increased microbial biomass carbon content by 36.06%(95%CI:21.22%-52.71%),microbial biomass nitrogen content by 40.80%(95%CI:30.42%-52.01%),and crop yield by 4.04%(95%CI:2.26%-5.46%),compared with single chemical fertilizer.The results of Meta-analysis showed that soil microbial biomass carbon and nitrogen contents,crop yield were also affected by crop type,nitrogen application amount,organic fertilizer application mode,soil initial pH,soil type and climate conditions.Further correlation analysis showed that microbial biomass carbon content was positively correlated with initial soil pH and average annual temperature(P<0.05),soil microbial biomass nitrogen content was significantly positively correlated with soil initial pH and nitrogen application amount(P<0.05),soil microbial biomass carbon and nitrogen ratio was significantly positively correlated with average annual temperature(P

关 键 词：微生物量碳 微生物量氮 有机肥 土壤肥力 作物产量 Meta分析 

分 类 号：S154.3[农业科学—土壤学]