title: [Effects of typical herbicides on soil respiration and N2O emissions from soil added with different nitrogen fertilizers].
abstract: To investigate the effects of typical herbicides on soil respiration and N2O emissions from soil added with different nitrogen fertilizers, a laboratory incubation experiment was carried out using a modified gas chromatograph (Agilent 4890D) method. The results showed that with (NH4)2SO4 amendment, soil respiration and N2O emissions from the Atrazine and Paraquat treatments had no significant difference in comparison to the control (P > 0.05). Glyphosate significantly inhibited soil respiration by 21.5% (P < 0.05) and had no obvious influence on N2O emissions (P > 0.05). Tribenuron-methyl significantly promoted soil respiration with the increase of 14.3% (P < 0.05) and also had no obvious influence on N2O emissions (P > 0.05). Acetochlor significantly increased soil respiration and N2O emissions (P < 0.05) with the increase of 6.1% and 45.1%, respectively. With urea application, Atrazine and Acetochlor had no significant influence on soil respiration and N2O emissions (P > 0.05). Paraquat increased N2O emissions significantly (P < 0.05)with the increase of 43.5% and had no significant influence on soil respiration ( P > 0.05). Glyphosate significantly inhibited soil respiration by 17.5% (P < 0.05), and had no significant influence on N2O emissions (P > 0.05). Tribenuron-methyl enhanced soil respiration and N2O emissions significantly (P < 0.05), and its soil respiration and N2O emissions were 1.3 and 1.6 times higher than those from the control. Due to the complexity of effects of different herbicides on microbial physiological metabolism, long-term in-situ studies need to be carried out to better understand the effect of various herbicides on greenhouse gas emissions.
authors.affiliation: College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China. 2010103063@njau.edu.cn
authors.forename: Qing
authors.initials: Q
authors.lastname: Sun
authors.forename: Chun-Xing
authors.initials: CX
authors.lastname: Shi
authors.forename: Kun
authors.initials: K
authors.lastname: Shi
authors.forename: Ru-Bin
authors.initials: RB
authors.lastname: Yan
authors.forename: Jing-Yan
authors.initials: JY
authors.lastname: Jiang
authors.forename: Yi-Zhong
authors.initials: YZ
authors.lastname: Wu
mesh_terms: D000645:Ammonium Sulfate / Q000737:chemistry; D002245:Carbon Dioxide / Q000032:analysis; D018556:Crops, Agricultural / Q000254:growth & development*; D005308:Fertilizers; D017752:Greenhouse Effect; D006540:Herbicides / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D009609:Nitrous Oxide / Q000032:analysis*; D012987:Soil / Q000032:analysis*
chemical_list: D005308:Fertilizers; D006540:Herbicides; D012987:Soil; D002245:Carbon Dioxide; D009609:Nitrous Oxide; D009584:Nitrogen; D000645:Ammonium Sulfate