| 秸秆还田配施腐解菌剂对土壤团聚体及其有机碳固持的影响 |
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| 引用本文： | 陈帅民,梁晓斐,李阳阳,范作伟,徐铭鸿,刘方明,侯中华,王学文,刘慧涛,吴海燕.秸秆还田配施腐解菌剂对土壤团聚体及其有机碳固持的影响[J].玉米科学,2022,30(6):110-117. |
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| 作者姓名： | 陈帅民 梁晓斐 李阳阳 范作伟 徐铭鸿 刘方明 侯中华 王学文 刘慧涛 吴海燕 |
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| 作者单位： | 吉林省农业科学院, 长春 130033;前郭灌区国营红旗农场, 吉林 松原 131100 |
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| 基金项目： | 吉林省农业科技创新工程(CXGC2021RCG001,GXGC2021TD004)、第四批吉林省青年科技人才托举工程(QT202024) |
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| 摘 要： | 采集吉林省半干旱地区浅旋和深翻模式下秸秆离田和秸秆还田配施腐解菌剂0～40cm土壤样品，分析土壤团聚体组成及有机碳的分布特征。结果表明，深翻模式下秸秆腐解率高于浅旋模式，腐解菌剂可显著提高秸秆腐解率。与秸秆离田相比，浅旋模式下，JG(秸秆还田)和YW(秸秆+菌剂)显著增加了0～20cm土层中2～0.25mm粒级团聚体比例，显著增加了>0.25mm粒级团聚体有机碳含量和土壤有机碳储量；深翻模式下，JG和YW显著增加了20～40cm土层中0.25～0.053mm粒级团聚体比例，且提高了>0.053mm粒级团聚体有机碳含量。2～0.25mm粒级团聚体的有机碳含量(SOCa)和固定量(SOCi)与土壤总有机碳(SOCt)具有显著正相关，2～0.25mm粒级团聚体是影响有机碳固持能力的关键粒级。
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| 关 键 词： | 玉米 秸秆还田 腐解菌剂 土壤团聚体 土壤有机碳储量 |
| 收稿时间： | 2022/7/21 0:00:00 |
Effects of Straw Returning Combined with Microbial Inoculum on Soil Aggregates Distribution and Organic Carbon Sequestration |
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| CHEN Shuai-min,LIANG Xiao-fei,LI Yang-yang,FAN Zuo-wei,XU Ming-hong,LIU Fang-ming,HOU Zhong-hu,WANG Xue-wen,LIU Hui-tao,WU Hai-yan.Effects of Straw Returning Combined with Microbial Inoculum on Soil Aggregates Distribution and Organic Carbon Sequestration[J].Journal of Maize Sciences,2022,30(6):110-117. |
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| Authors: | CHEN Shuai-min LIANG Xiao-fei LI Yang-yang FAN Zuo-wei XU Ming-hong LIU Fang-ming HOU Zhong-hu WANG Xue-wen LIU Hui-tao WU Hai-yan |
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| Institution: | Jilin Academy of Agricultural Sciences, Changchun 130033;Hongqi Farm in Qianguo Area, Songyuan 131100, China |
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| Abstract: | Soil samples(0-40 cm) were collected in non-straw returning(CK) and different straw returning modes with decomposing microbial inoculums in semi-arid areas of Jilin Province. The results showed that the straw decomposition rate in the deep tillage was higher than it in the shallow rotary, and the decomposing microbial inoculum increased the straw decomposition rate significantly. Compared to CK, in the shallow rotary mode, JG and YW increased the proportion of 2-0.25 mm aggregates, and the organic carbon content of >0.25 mm aggregates in the 0-20 cm soil layer. In the deep tillage mode, JG and YW significantly increased the proportion of 0.25-0.053 mm aggregates in the 20-40 cm soil layer, and increased the organic carbon content of >0.053 mm aggregates. Organic carbon content(SOCa) and stock(SOCi) of 2-0.25 mm aggregates were significantly positively correlated with total soil organic carbon(SOCt), indicating that 2-0.25 mm aggregates played the key role to promote soil carbon sequestration. |
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| Keywords: | Maize Straw returning Microbial inoculum Soil aggregates Organic carbon stock |
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