不同有机物料还田对农田系统净温室气体排放的影响

农业有机物料的循环利用不但能解决自身对环境的污染问题、为农田提供养分,而且对增加土壤碳库、减少温室气体(GHG)排放和应对气候变化也发挥着重要作用。该文选用来自5个涉农系统的有机物料(秸秆、沼渣、菌渣、酒渣和猪粪)进行还田,以单施化肥为对照,基于田间定位试验,研究不同有机物料还田对农田土壤碳库、土壤温室气体排放的影响,在此基础上采用土壤碳库法对农田系统净温室气体排放(NGHGE)进行综合评价。2013-2015年的结果表明:1)与无机肥对照相比,有机物料还田均不同程度地提高农田土壤固碳能力,2013-2015年平均提高0-20cm土壤碳储量63.52%,其中秸秆、沼渣、菌渣、酒渣和猪粪分别比无...

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Published in农业工程学报 Vol. 32; no. S2; pp. 111 - 117
Main Author 李柘锦 隋鹏 龙攀 严玲玲 王彬彬 陈源泉
Format Journal Article
LanguageChinese
Published 益阳市农业科学研究所,益阳 413002 2016
中国农业大学农学院,北京,100193%中国农业大学农学院,北京 100193
湖南农业大学农学院,长沙 410128%中国农业大学农学院,北京 100193
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Abstract 农业有机物料的循环利用不但能解决自身对环境的污染问题、为农田提供养分,而且对增加土壤碳库、减少温室气体(GHG)排放和应对气候变化也发挥着重要作用。该文选用来自5个涉农系统的有机物料(秸秆、沼渣、菌渣、酒渣和猪粪)进行还田,以单施化肥为对照,基于田间定位试验,研究不同有机物料还田对农田土壤碳库、土壤温室气体排放的影响,在此基础上采用土壤碳库法对农田系统净温室气体排放(NGHGE)进行综合评价。2013-2015年的结果表明:1)与无机肥对照相比,有机物料还田均不同程度地提高农田土壤固碳能力,2013-2015年平均提高0-20cm土壤碳储量63.52%,其中秸秆、沼渣、菌渣、酒渣和猪粪分别比无机肥提高33.13%、86.34%、75.97%、52.66%和69.48%,来自农田系统外的几种有机物料还田效果优于秸秆,更有利于土壤碳储量的增加。2)除秸秆外,有机物料还田均不同程度地增加土壤温室气体排放,与无机肥对照相比,土壤增温潜势(GWPsoil)平均增幅达到67.23%,其中,沼渣、菌渣、酒渣和猪粪处理的土壤GWPsoil分别比秸秆还田处理高30.23%、27.84%、62.10%和52.55%,秸秆还田低于酒渣和猪粪处理(P<0.05)。3)各处理的NGHGE均为正值,代表各处理均为温室气体的源,但是,除了菌渣还田处理的NGHGE高于无机肥之外,其他有机物料还田的NGHGE显著低于无机肥处理(P<0.05),秸秆、沼渣、酒渣和猪粪的NGHGE分别比无机肥低52.78%、56.30%、54.19%和90.35%,说明猪粪、沼渣和酒渣经过农田系统外循环后还田之后减少温室效应效果优于直接还田的秸秆。综合显示,农业有机物料的循环利用有利于土壤碳储量的增加,除了菌渣之外,猪粪、沼渣、酒渣和秸秆还田虽均增加了土壤温室气体排放,综合土壤固碳和排放,整个农田系统的净温室气体排放还是减少了。
AbstractList S154.1; 农业有机物料的循环利用不但能解决自身对环境的污染问题、为农田提供养分,而且对增加土壤碳库、减少温室气体(GHG)排放和应对气候变化也发挥着重要作用。该文选用来自5个涉农系统的有机物料(秸秆、沼渣、菌渣、酒渣和猪粪)进行还田,以单施化肥为对照,基于田间定位试验,研究不同有机物料还田对农田土壤碳库、土壤温室气体排放的影响,在此基础上采用土壤碳库法对农田系统净温室气体排放(NGHGE)进行综合评价。2013-2015年的结果表明:1)与无机肥对照相比,有机物料还田均不同程度地提高农田土壤固碳能力,2013-2015年平均提高0-20cm土壤碳储量63.52%,其中秸秆、沼渣、菌渣、酒渣和猪粪分别比无机肥提高33.13%、86.34%、75.97%、52.66%和69.48%,来自农田系统外的几种有机物料还田效果优于秸秆,更有利于土壤碳储量的增加。2)除秸秆外,有机物料还田均不同程度地增加土壤温室气体排放,与无机肥对照相比,土壤增温潜势(GWPsoil)平均增幅达到67.23%,其中,沼渣、菌渣、酒渣和猪粪处理的土壤GWPsoil分别比秸秆还田处理高30.23%、27.84%、62.10%和52.55%,秸秆还田低于酒渣和猪粪处理(P<0.05)。3)各处理的 NGHGE 均为正值,代表各处理均为温室气体的源,但是,除了菌渣还田处理的 NGHGE高于无机肥之外,其他有机物料还田的NGHGE显著低于无机肥处理(P <0.05),秸秆、沼渣、酒渣和猪粪的NGHGE分别比无机肥低52.78%、56.30%、54.19%和90.35%,说明猪粪、沼渣和酒渣经过农田系统外循环后还田之后减少温室效应效果优于直接还田的秸秆。综合显示,农业有机物料的循环利用有利于土壤碳储量的增加,除了菌渣之外,猪粪、沼渣、酒渣和秸秆还田虽均增加了土壤温室气体排放,综合土壤固碳和排放,整个农田系统的净温室气体排放还是减少了。
农业有机物料的循环利用不但能解决自身对环境的污染问题、为农田提供养分,而且对增加土壤碳库、减少温室气体(GHG)排放和应对气候变化也发挥着重要作用。该文选用来自5个涉农系统的有机物料(秸秆、沼渣、菌渣、酒渣和猪粪)进行还田,以单施化肥为对照,基于田间定位试验,研究不同有机物料还田对农田土壤碳库、土壤温室气体排放的影响,在此基础上采用土壤碳库法对农田系统净温室气体排放(NGHGE)进行综合评价。2013-2015年的结果表明:1)与无机肥对照相比,有机物料还田均不同程度地提高农田土壤固碳能力,2013-2015年平均提高0-20cm土壤碳储量63.52%,其中秸秆、沼渣、菌渣、酒渣和猪粪分别比无机肥提高33.13%、86.34%、75.97%、52.66%和69.48%,来自农田系统外的几种有机物料还田效果优于秸秆,更有利于土壤碳储量的增加。2)除秸秆外,有机物料还田均不同程度地增加土壤温室气体排放,与无机肥对照相比,土壤增温潜势(GWPsoil)平均增幅达到67.23%,其中,沼渣、菌渣、酒渣和猪粪处理的土壤GWPsoil分别比秸秆还田处理高30.23%、27.84%、62.10%和52.55%,秸秆还田低于酒渣和猪粪处理(P&lt;0.05)。3)各处理的NGHGE均为正值,代表各处理均为温室气体的源,但是,除了菌渣还田处理的NGHGE高于无机肥之外,其他有机物料还田的NGHGE显著低于无机肥处理(P&lt;0.05),秸秆、沼渣、酒渣和猪粪的NGHGE分别比无机肥低52.78%、56.30%、54.19%和90.35%,说明猪粪、沼渣和酒渣经过农田系统外循环后还田之后减少温室效应效果优于直接还田的秸秆。综合显示,农业有机物料的循环利用有利于土壤碳储量的增加,除了菌渣之外,猪粪、沼渣、酒渣和秸秆还田虽均增加了土壤温室气体排放,综合土壤固碳和排放,整个农田系统的净温室气体排放还是减少了。
Abstract_FL The recycling of agricultural organic wastes not only can mitigate its pollution to the environment, provide nutrients for farmland, but also increase soil carbon storage and reduce greenhouse gas (GHG) emissions, which play an important role to climate change. Five kinds of agricultural organic wastes were selected to the wheat-maize rotation system, including crop residue, biogas residue, mushroom residue, wine residue and pig manure, with chemical fertilizer as control. Based on the field trials, the effects of soil carbon storage, soil GHG emissions and net greenhouse gas emissions (NGHGE) were measured. The results from 2013-2015 showed that: 1) Compared with chemical fertilizer control, returning organic materials improved the ability of soil carbon sequestrationby63.52% of 0-20 cm soil during 2013-2015 years of observation, crop residue, biogas residue, mushroom residue, wine residue and pig manure increased by33.13%、86.34%、75.97%、52.66% and 69.48% in 2013-2015, respectively.Except the treatment of mushroom residue returning, organic material outside the croplands were more conducive to the increasing of soil carbon storage than crop residue.2) Except crop residues returning, organic materials returning increased soil GHG emissions, soil GWP of crop residues were the lowest one, which was significantly lower than wine residue and pig manure (p<0.05), compared with biogas residue, mushroom residue, wine residue and pig manure, crop residue reduced emissions by 30.23%、27.84%、62.10% and 52.55%, respectively.3) The values of NGHGE of each treatment were positive, which means all of the treatments were GHG emission sources. Compared with inorganic fertilizer control, except the treatment of mushroom residue returning, other organic amendments reduced GHG emissions and increased soil carbon pool s of the system(p<0.05), crop residues, biogas residues, wine residues and pig manures decreased NGHGE by52.78%、56.30%、54.19% and 90.35%, respectively. Organic materials from outside had a better NGHGE than crop residues. In conclusion, recycling organic wastes is beneficial to the soil carbon storage, although increasing soil GHG emissions, it ultimately presents an enhancement of NGHGE, which reduced total GHG emissions of the whole system. Returning organic amendments such as crop residues, biogas residues, wine residues and pig manures far beyond the croplands had better effects of mitigating GHGs than crop residues.
Author 李柘锦 隋鹏 龙攀 严玲玲 王彬彬 陈源泉
AuthorAffiliation 中国农业大学农学院;湖南农业大学农学院;益阳市农业科学研究所
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Author_FL Wang Binbin
Li Zhejin
Chen Yuanquan
Long Pan
Sui Peng
Yan Lingling
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DocumentTitle_FL Effects of different organic wastes application on net greenhouse gas emission in farmland system
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Keywords 排放控制
greenhouse gases
温室气体
有机物料还田
circular agriculture
emission control
循环农业
soils
农田土壤碳库
土壤
organic wastes returning
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Notes 11-2047/S
Li Zhejin;Sui Peng;Long Pan;Yan Lingling;Wang Binbin;Chen Yuanquan;College of Agronomy and Biotechnology, China Agricultural University;College of Agronomy and Biotechnology, Hunan Agricultural University;Yiyang Institute of Agricultural Scienees
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中国农业大学农学院,北京,100193%中国农业大学农学院,北京 100193
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SubjectTerms 温室气体;排放控制;土壤;有机物料还田;农田土壤碳库;循环农业
Title 不同有机物料还田对农田系统净温室气体排放的影响
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