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| 施用秸秆和接种蚯蚓对土壤温室气体排放的影响 | |
| 引用本文： | 罗天相.施用秸秆和接种蚯蚓对土壤温室气体排放的影响[J].土壤,2008,40(4):653-657. |
| 作者姓名： | 罗天相 |
| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京,210095;宣春学院,江西宜春,336000 2. 南京农业大学资源与环境科学学院,南京,210095 3. 宣春学院,江西宜春,336000 |
| 基金项目： | 国家自然科学基金，宜春市农业重点项目 |
| 摘 要： | 通过施用秸秆并接种蚯蚓于微系统实验研究发现,在 21 天的培养期内,蚯蚓活动显著增加土壤C02和N20的排放速率,与对照处理相比,单接种蚯蚓处理与单施加秸秆的处理导致CO2排放量分别增加了60%和1.35倍,相应的N2O .排放量增加了1.06倍和3.94倍.另一方面,与单施加秸秆的处理相比,接种蚯蚓配合施加秸秆的处理导致C02和N20排放分别增加了41%和45%.施用秸秆显著提高了土壤微生物生物量C含量,而单接种蚯蚓处理的土壤相比对照处理反而降低.接种蚯蚓显著提高了土壤N03--N和NH4 -N含量,秸秆处理土壤并不显著增加土壤中的NH4 -N含量. |
| 关 键 词： | 蚯蚓 温室气体 秸秆 微生物生物量碳 矿质氮 |
Effects of Straw Application and Earthworm Inoculation on Soil Greenhouse Gases Emissions |
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| LUO Tian-xiang.Effects of Straw Application and Earthworm Inoculation on Soil Greenhouse Gases Emissions[J].Soils,2008,40(4):653-657. | |
| Authors: | LUO Tian-xiang |
| Institution: | College of Resources and Environmental Sciences, Nanjing Agricultural University |
| Abstract: | Short-term effects of straw application and active earthworm inoculation on greenhouse gases emission were studied in a microcosm experiment throughout a 21-day incubation. Straw application and earthworm inoculation enhanced CO2 and N2O emissions. Cumulative emissions of CO2 and N2O in treatment SE (soil only with earthworm) and SR (soil only with straw) increased by 60 % and 1.35 times for CO2, 1.06 times and 3.94 times for N2O, respectively versus CK (only soil) treatment. The emission fluxes of CO2 and N2O in treatment ER (soil with straw and earthworm) were 41% and 45% higher than SE, respectively. The value of MBC increased significantly in straw application but decreased in earthworm inoculation. The contents of NO3--N and NH4+-N increased significantly in earthworm inoculation, but not significantly in straw application. |
| Keywords: | Earthworm Greenhouse gases Straw MBC Mineral nitrogen |
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