| 农田土壤有机碳及活性碳组分对秸秆和地膜覆盖响应的Meta分析 |
| 摘要点击 556 全文点击 70 投稿时间：2024-03-22 修订日期：2024-06-02 |
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| 中文关键词 覆盖措施 土壤有机碳（SOC） 碳组分 环境因素 田间管理 |
| 英文关键词 mulching measures soil organic carbon （SOC） carbon fractions environmental factors field management |
| 作者 | 单位 | E-mail | | 杨那 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 杨凌 712100 | 15529501009@163.com | | 毛晓涵 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 杨凌 712100 | | | 李彦 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 杨凌 712100 | | | 郝红玉 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 杨凌 712100 | | | 王朝辉 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 杨凌 712100 | | | 李紫燕 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 杨凌 712100 | liziyan0161@126.com |
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| 中文摘要 |
| 为研究地表覆盖在不同环境和农田管理措施下对土壤有机碳（SOC）及碳组分影响的差异,利用Meta定量分析方法分析秸秆和地膜覆盖下SOC及活性碳组分的变化,并对试验地点的环境和农田管理措施进行分组,探究其在不同条件下的变化特征. 相比于地膜覆盖,秸秆覆盖更有利于提高SOC、可溶性有机碳（DOC）和微生物量碳（MBC）含量. 年均气温>10℃时秸秆覆盖下SOC相对变化率比地膜覆盖下高14.93%,气温<10℃时,地膜覆盖比秸秆覆盖高6.47%；降雨量显著影响秸秆覆盖下MBC含量,不同降雨量下MBC变化率差异达到27.02%. 轮作能提高秸秆覆盖下SOC及活性碳组分含量,但地膜覆盖下不轮作使SOC含量显著降低4.52%. DOC响应比与SOC响应比呈显著正相关,MBC响应比与SOC响应比没有显著相关关系；地膜覆盖时长与SOC响应比呈显著负相关. 综上,秸秆和地膜覆盖在不同环境和管理措施下对SOC和活性碳组分的影响有差异,相较于地膜覆盖,秸秆覆盖在各种环境和管理措施下更有利于提高SOC及活性碳组分含量. |
| 英文摘要 |
| In order to study the differences in the effects of mulching measures on soil organic carbon （SOC） and carbon fractions under different environments and farmland management measures, the Meta-quantitative analysis method was used to analyze the changes in SOC and carbon fractions under straw and film mulching, and the environmental and farmland management measures at the test sites were grouped to explore their change characteristics under different environments. Compared with film mulching, straw mulching was more beneficial to increase SOC, dissolved organic carbon （DOC）, and microbial biomass carbon （MBC） contents. The SOC percentage change rate under straw mulching was 14.93% higher than that under film mulching when the mean annual temperature was higher than 10℃, and the SOC percentage change rate under film mulching was 6.47% higher than that under straw mulching when the mean annual temperature was lower than 10℃. The difference in MBC percentage change rate between different mean annual precipitation amounts reached 27.02%. Crop rotation was conducive to increasing SOC and carbon fractions under straw mulching, but the percentage change rate of SOC under film mulching without crop rotation decreased by 4.52%. There was a significant positive correlation between DOC response ratio and SOC response ratio, but no significant correlation between MBC response ratio and SOC response ratio, and the film mulching time had a significant negative correlation with SOC response ratio. Compared with film mulching, straw mulching was more conducive to increasing SOC and active carbon fractions content under various environmental and management measures. |
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