文献类型：期刊文献

英文题名：Multifunctional effects of nitrification and urease inhibitors: Decreasing soil herbicide residues and reducing nitrous oxide emissions simultaneously

作者：Liu, Yaohui[1] Wang, Weijin[2] Zhang, Manyun[1,3,4] Omidvar, Negar[4] Fan, Haoqi[1] Ren, Kewei[1] Zhang, Wenyuan[1] Hu, Dongnan[1] Xiao, Yihua[1,5]

第一作者：Liu, Yaohui

通信作者：Hu, DN[1];Xiao, YH[1]

机构：[1]Jiangxi Agr Univ, Coll Forestry, Jiangxi Key Lab Subtrop Forest Resources Cultivat, Nanchang 330045, Peoples R China;[2]Univ Queensland, Sch Agr & Food Sci, Brisbane, Qld 4072, Australia;[3]Griffith Univ, Sch Environm & Sci, Ctr Planetary Hlth & Food Secur, Brisbane, Qld 4111, Australia;[4]Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China;[5]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China

年份：2024

卷号：287

外文期刊名：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

收录：;Scopus(收录号：2-s2.0-85208320598);WOS:【SCI-EXPANDED(收录号:WOS:001355144800001)】；

基金：This research was supported by the National Natural Science Foun-dation of China (31560218) and the National Key Research and Devel-opment Program (2018YFD1000603) by Dongnan Hu.

语种：英文

外文关键词：Nitrogen cycle inhibitors; Glyphosate degradation; Nitrous oxide emissions; Functional genes; Soil moisture

摘要：Glyphosate pollution and greenhouse gas emissions are major problem in achieving sustainable soil management. It is necessary to develop effective strategies to simultaneously reduce herbicide residues and nitrous oxide (N2O) emissions in soil. This study aimed to: (1) quantitative analyze the effects of nitrogen (N) cycle inhibitors (nitrification inhibitors 3,4 dimethylpyrazole phosphate (DMPP) and dicyandiamide (DCD) and urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT)) on glyphosate degradation and reduction of N2O under different soil moistures; (2) identify the functional microbes and genes associated with glyphosate degradation and N2O emissions; and (3) decipher the main mechanisms of N cycle inhibitors affecting glyphosate degradation at different soil water contents. Compared to the control, the application of DMPP, DCD and NBPT reduced glyphosate residues in soil by 33.0 %, 60.3 % and 35.7 %, respectively, under 90 % water holding capacity (WHC). The application of DCD stimulated Acidobacteria and the phnX gene to degrade soil glyphosate. Further, soil glyphosate residues were significantly and negatively related to soil N2O emissions at both 60 % and 90 % WHC. Compared to the control, NBPT application decreased cumulative N2O emissions by 91.4 % at 90 % WHC by decreasing soil nitrate N (NO3- -N) and inhibiting amoC and narG genes at 90 %. The application of N cycle inhibitors could be a potential strategy to simultaneously reduce glyphosate residues and soil N2O emissions. Our study could provide technical support to reduce the risks of herbicide exposure and reduce greenhouse gas emissions.