摘要
添加高效纤维素分解菌于农牧业有机冗余物中,通过有氧发酵制备出具有一定保水性、透气性和肥力的生物有机肥(MOF)。在乌拉特荒漠草原试验区进行MOF施加相关试验,施加量为1 kg·m^(-2)。结果表明,MOF的施加可以通过促进植被生长、改良土壤理化性质以及增加微生物数量等方式对退化荒漠草原植被-土壤-微生物系统起到快速恢复作用。其中,植被盖度增加了33%;土壤黏粉粒含量增加了2%,土壤全碳含量增加了9%,土壤全氮含量增加了0.9%;土壤细菌中11个门类数量变化差异显著,土壤真菌中1个门类数量变化差异显著;植被盖度增加的92%可由MOF的施加和土壤含水率共同解释,物种丰富度增加的84%可由MOF施加、土壤含水率和土壤电导率共同解释。试验结果为施加生物有机肥在干旱区荒漠草原产生的恢复作用提供了理论依据、数据支持以及技术支撑。
Microbial organic fertilizers(MOF)provide water retention,air permeability and fertility and are prepared from agriculture and animal husbandry waste through aerobic fermentation by high efficiency cellulose decomposer bacteria.An experimental 1 kg·m^(-2) application of MOF experiment in the Urat desert steppe showed that applying MOF quickly restored the vegetation-soil-microbial system in degraded desert steppe through promoting vegetation growth,improving soil physical and chemical properties,increasing quantities of microbes and other similar effects.In this experiment it vegetation cover was significantly increased by 33%,soil sticky clay content was significantly increased by 2%,soil total carbon content was significantly increased by 9%,soil total nitrogen content was significantly increased 0.9%;And 11 phyla of soil bacteria and 1 phyla of soil fungi had significant differences in occurrence.Analytically,92%of the increase in vegetation cover was explained by the MOF application and soil moisture content;84%of the increase in species richness was explained by the effects of MOF application,soil moisture content and soil electrical conductivity.Overall,these results provide evidence of efficacy,data support and technical support for the restoration of arid desert steppe through application of microbial organic fertilizers.
作者
李俊瑶
蒋星驰
胡晋瑜
魏栋光
赵学勇
王少昆
LI Jun-yao;JIANG Xing-chi;HU Jin-yu;WEI Dong-guang;ZHAO Xue-yong;WANG Shao-kun(Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,College of Resources and Environment,Beijing 101408,China;University of Chinese Academy of Sciences,College of Life Sciences,Beijing 101408,China;State-owned Yulin City Hengshan District Two Stone Knock Forest Farm,Yulin 719109,China;Bayannur City Forestry and Grassland Resources Protection Center,Bayannur 015015,China)
出处
《草业学报》
CSCD
北大核心
2024年第3期34-45,共12页
Acta Prataculturae Sinica
基金
国家自然科学基金项目(42071140)
内蒙古乌拉特梭梭林自然保护区长期生态监测与评估项目(E2900510)资助。
关键词
生物有机肥
荒漠草原
植被特征
土壤微生物
microbial organic fertilizers
desert steppe
vegetation characteristics
soil microbes
