中国农业科学2018，Vol.51Issue(1)：119-128,10.DOI:10.3864/j.issn.0578-1752.2018.01.011
施用有机肥对中国农田土壤微生物量影响的整合分析
A Meta-Analysis of Manure Application Impact on Soil Microbial Biomass Across China's Croplands
摘要
Abstract
[Objective] Application of organic manure can promote soil microorganisms growth and improve soil fertility.However,very rare studies were conducted to quantify the effects of manure application on soil microbial biomass carbon (SMBC) and nitrogen (SMBN) in croplands at national scale.Therefore,quantifying the effects of manure application on the contents of SMBC and SMBN under different climate regions and soil conditions is important to provide theoretical basis for reasonably applying manure,so as to enhancing of soil fertility and microbial activities for China's croplands.[Method] In current study,all of 70 literatures,including application of impacts on the contents of SMBC and SMBN in croplands in China during 1990 and 2017,were collected (336 for SMBC and 222 data for SMBN from individual study).The meta-analysis was used to quantify the magnitude of manure application impacts on the contents of SMBC and SMBN at three aspects:Climatic regions,land use types and soil pH levels.[Result] At national scale,the contents of SMBC and SMBN in manure applied soils were significantly increased by 128.1％ and 70.2％ when compared with no fertilizer (CK),respectively,while those were increased by 57.1％ and 34.2％ when compared with mineral fertilizer (NPK),respectively.The increments of SMBC and SMBN contents improved by manure in subtropical monsoon climate (66.7％ and 57.5％,respectively) were significantly higher than those in temperate continental climate (26.0％ and 20.9％,respectively) and temperate monsoon climate (37.0％ and 56.7％,respectively) compared with NPK.Furthermore,manure application could significantly increase the contents of SMBC and SMBN in paddy soils (69.1％ and 67.1％,respectively) compared with NPK,which were higher than those in upland (34.7％ and 26.4％,respectively) and upland-paddy soils (50.2％ and 63.9％,respectively).For the neutral soils (6＜pH＜8),the increment of SMBC and SMBN contents by 64.4％ and 63.7％ in the treatment with manure applied were higher than those in the alkaline (pH＞8,29.4％ and 21.9％) and acidic soils (pH＜6,44.4％ and 45.5％) compared with NPK,respectively.In addition,the correlation analysis showed that the contents of SMBC and SMBN were positively correlated with annual carbon and nitrogen input from manure,respectively.[Conclusion] Overall,the application of manure can dramatically improve the contents of SMBC and SMBN,indicating manure supplementation provided sufficient carbon and nitrogen for microbial growth and reproduction,and nutrient retention.Nevertheless,the effect of manure application on the contents of SMBC and SMBN relative to CK and NPK were significant different among climatic regions,land use types and soil pH levels.Therefore,climate types and soil conditions should be taken into consideration for applying manure in different regions in China.关键词
有机肥/土壤微生物生物量碳/土壤微生物生物量氮/气候类型/土壤利用类型/土壤pH/整合分析Key words
manure/soil microbial biomass carbon/soil microbial biomass nitrogen/climatic regions/land use types/soil pH levels/Meta-analysis引用本文复制引用
任凤玲,张旭博,孙楠,徐明岗,柳开楼..施用有机肥对中国农田土壤微生物量影响的整合分析[J].中国农业科学,2018,51(1):119-128,10.基金项目
国家重点研发计划(2017YFC0503805)、国家科技支撑计划(2014BAD14B03)、国家自然科学基金项目(41620104006) （2017YFC0503805）
