微生物肥料对铝矿废弃地复垦区土壤有机碳的影响  

Effects of Microbial Fertilizers on Soil Organic Carbon of Reclaimed Minesoils in Aluminum Mining Wasteland

作　　者：原芩[1] 孙崇凤[1] 李华[1] 张强[2] 郜春花[2] 

机构地区：[1]山西大学环境与资源学院,太原030006 [2]山西省农业科学院农业环境与资源研究所,太原030012

出　　处：《土壤》2013年第3期419-425,共7页Soils

基　　金：国家科技支撑计划项目(2008BAD95B04);国家国际合作计划项目(2011DFA90830);山西省重大专项项目(20121101009)资助

摘　　要：在山西省孝义市铝矿废弃地复垦区玉米种植地块,采用不同的生物活化剂及生物菌剂处理,研究铝矿废弃地复垦过程中微生物肥料对复垦区玉米种植地块土壤有机碳的影响,测定了土壤有机碳含量、土壤δ13C值、玉米籽粒和秸秆中δ13C值。结果显示,不同微生物肥料处理下土壤有机碳含量随着土层深度的增加而降低,而土壤δ13C值随着土层深度的增加而增加;施加微生物肥料能显著提高土壤有机碳含量;使用微生物肥料后,玉米籽粒δ13C值显著高于秸秆,说明玉米籽粒比秸秆更容易富集13C,但玉米籽粒和秸秆的δ13C值之间没有显著相关性。以上结果表明,在铝矿废弃地的复垦过程中,使用微生物肥料有利于土壤有机碳的积累。Field study was conducted in a corn cropping system in reclaimed minesoils of the aluminum mining wasteland in 2010 in Xiaoyi City, Shanxi Province in north of China. The purpose was to characterize the soil organic under different microbial fertilizers of biological activator, biological agents, and control treatment, i.e. without any microbial fertilizer in the maize （Yitianl8） cropping system. The measurements included the organic carbon content and the values of δ^13C of soil in the depths of 0 - 20 cm and 20 - 40 cm, and the values of δ^13C in maize stem and grain. Results showed that deeper soil corresponded to reducing soil organic carbon but increasing δ^13C values. Microbial fertilizers could significantly increase soil organic carbon content. Maize grain accumulated much more ^13C than stem, as evidenced by the statistically significant difference, in spite that no significant correlation was found. Based on the results it is concluded that microbial fertilizers could improve the accumulation of soil organic carbon in aluminum mining wasteland.

关 键 词：铝矿废弃地 复垦区 土壤有机碳 微生物肥料 

分 类 号：S153.6[农业科学—土壤学] S152.4[农业科学—农业基础科学]