Trade-off strategy for the usage of thiencarbazone-methyl & BULL;isoxaflutole on maize fields: Nitrogen-associated microbial response and environmental implications
文献类型: 外文期刊
作者: Wang, Yonglu 1 ; Zhang, Fengsong 1 ; Wang, Lida 3 ; Fang, Huajun 1 ; Zhang, Guixiang 4 ; Zhao, Xiumei 3 ; Liu, Siyi 5 ; Li, Qingchao 3 ; Liu, Yue 3 ; Ren, Rui 4 ; An, Yu 4 ; Fan, Lisha 4 ;
作者机构: 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Heilongjiang Acad Agr Sci, Qiqihar Branch, Qiqihar 161006, Heilongjiang Pr, Peoples R China
4.Taiyuan Univ Sci & Technol, Sch Environm & Resources, Taiyuan 030024, Shanxi Province, Peoples R China
5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
关键词: Herbicides; Ammonium nitrogen; Nitrate nitrogen; Nitrogen-related functional groups; Functional genes; Nitrogen use efficiency
期刊名称:JOURNAL OF CLEANER PRODUCTION ( 影响因子:11.1; 五年影响因子:11.0 )
ISSN: 0959-6526
年卷期: 2023 年 418 卷
页码:
收录情况: SCI
摘要: Due to the lack of knowledge on the mechanism of the effect of new herbicides on nitrogen-functioning mi-croorganisms and nitrogen use efficiency, a balancing strategy for the application of new herbicides in maize fields is rarely proposed. By studying the effects of thiencarbazone-methyl & BULL;isoxaflutole (TMI) on nitrogen transformation in soil and nitrogen agronomic efficiency (NAE) of maize, the mechanism of nitrogen functional groups and genes involved was revealed, and controlling factors affecting soil nitrogen transformation were identified. Results showed that on day 18, the nitrate nitrogen (NO3 �-N) content increased but ammonium ni-trogen (NH4+-N) content decreased with the TMI application. This can be further verified by the positive cor-relations (p < 0.05) among isoxaflutole residues, "aerobic_ammonia_oxidation" and NO3 �-N content. The NH4+-N content increased significantly with TMI application at 10 times the recommended dose (412.5 ml hm-2) on days 30 and 45, which explains the high value of NAE at the high-dose application of TMI. Random forest model and redundancy analysis confirmed the significant impacts of the nifH gene on NH4+-N content and TMI residues on NO3 �-N content (p < 0.05). Comprehensively considering the disturbance of nitrogen-related microorganisms and the effects on the NAE of maize, this research proposed a trade-off strategy for the application of new pre-emergence herbicide in maize fields, involving background investigation, experimental design, analytical methods and trade-off indicators. This may be further popularised and achieve a balance between economic and environmental benefits.
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