| 秸秆不同还田方式下蚯蚓对旱作稻田土壤碳、氮的影响 |
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| 引用本文： | 王霞,胡锋,李辉信,沈其荣. 秸秆不同还田方式下蚯蚓对旱作稻田土壤碳、氮的影响[J]. 生态环境, 2003, 12(4): 462-466 |
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| 作者姓名： | 王霞 胡锋 李辉信 沈其荣 |
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| 作者单位： | 南京农业大学资源与环境学院,江苏,南京,210095 |
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| 基金项目： | 国家自然科学基金项目(30370286)，国家自然科学基金重点项目(39830220) |
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| 摘 要： | 通过两年的田间小区试验，研究了在秸秆的不同施用方式下，蚯蚓(Pheretima sp)对旱作水稻土壤中碳、氮的影响。设置5个处理：秸秆混施，秸秆深施 蚯蚓，秸秆表施，秸秆表施 蚯蚓，对照。2001年夏季播种旱稻，在4个主要生育期采集(0-20cm)土样。2002年再次播种该品种旱稻，采集成熟期(0-20cm)土壤。测定土壤碳、氮以及微生物量碳、氮。结果表明，不论采用何种秸秆还田方式，蚯蚓并不造成土壤有机碳和全氮显著耗减。蚯蚓活动对土壤氨态氮及硝态氮的影响较大；从总体上看，它促进了土壤氮的矿化。不同秸秆施用方式都影响蚯蚓对土壤微生物的作用，在表施秸秆情况下，蚯蚓对微生物量提高最显著。
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| 关 键 词： | 蚯蚓 秸秆 施用方式 土壤碳氮 土壤微生物量 |
| 文章编号： | 1672-2175(2003)04-0462-05 |
| 修稿时间： | 2003-06-27 |
Effects of earthworm on soil C, N on upland-rice soil under different manipulations of corn straw |
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| WANG Xia,HU Feng,LI Hui-xin,SHEN Qi-rong College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing ,China. Effects of earthworm on soil C, N on upland-rice soil under different manipulations of corn straw[J]. Ecology and Environmnet, 2003, 12(4): 462-466 |
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| Authors: | WANG Xia HU Feng LI Hui-xin SHEN Qi-rong College of Resources Environmental Sciences Nanjing Agricultural University Nanjing China |
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| Affiliation: | WANG Xia,HU Feng,LI Hui-xin,SHEN Qi-rong College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China |
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| Abstract: | Effects of earthworm on soil C, N were investigated in enclosures on upland-rice soil for two years. It was found that earthworm had no significant influence on TOC and TN, however, the content of NH4-N, NO3-N and Microbe Biomass were changed distinctly. In general, mineralization of soil N and organic matter was increased and different manipulations of corn straw could lead to different results. |
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| Keywords: | earthworm corn straw admixture mulch microbial biomass |
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