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Responses of ammonia volatilization from rice paddy soil to application of wood vinegar alone or combined with biochar

文献类型： 外文期刊

作者： Sun, Haijun 1 ; Feng, Yanfang 2 ; Xue, Lihong 2 ; Mandal, Sanchita 3 ; Wang, Hailong 4 ; Shi, Weiming 5 ; Yang, Linzha 1 ;

作者机构： 1.Nanjing Forestry Univ, Coll Forestry, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Agroenvironm Downstream Yangtze Plain, Minist Agr & Rural Affairs, Nanjing 210014, Peoples R China

3.Univ South Australia, Future Ind Inst, Bldg 10, Mawson Lakes, SA 5095, Australia

4.Zhejiang A&F Univ, Zhejiang Prov Key Lab Soil Contaminat & Bioremedi, Hangzhou 311300, Zhejiang, Peoples R China

5.Foshan Univ, Sch Food Sci & Engn, Foshan 528000, Guangdong, Peoples R China

6.Foshan Univ, Biochar Engn Technol Res Ctr Guangdong Prov, Sch Environm & Chem Engn, Foshan 528000, Guangdong, Peoples R China

7.Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212001, Jiangsu, Peoples R China

8.Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA

9.Univ Sheffield, Dept Anim & Plant Sci, Western Bank, Sheffield S10 2TN, S Yorkshire, England

关键词： Atmospheric environment; Biochar; Ammonia volatilization; Pyroligneous acid; Resources recycling; Rice production

期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）

ISSN： 0045-6535

年卷期： 2020 年 242 卷

页码：

收录情况： SCI

摘要： Wood vinegar (WV) was applied alone or combined with biochar (BC) to observe their efficiency on suppressing the ammonia (NH3) volatilization from rice paddy soil. Five treatments, i.e., control (240 kg N ha(-1) applied in urea), WV-5 and WV-10 (240 kg N ha(-1) plus 5 and 10 t WV ha(-1), respectively), and their counterparts WV-5-BC and WV-10-BC (WV-5 and WV-10 plus 7t BC ha(-1)), were evaluated by a soil columns experiment. The N fertilizer was split applied as basal and two supplementary fertilizations (named BF, SF1 and SF2, respectively). The results showed that WV-5 treatment increased rice grain yield up to 11.2% compared to the control. Compared with the control, four WV-amended treatments, exhibited lower pH values of the floodwater (7.94-8.18 vs 8.47 and 7.85-7.91 vs 7.98) and the topsoil (6.52-6.76 vs 6.82 and 6.82-6.92 vs 6.99) during the BF and SF1 periods. Both WV-5 and WV-10 increased the NH4+-N contents of topsoil by 10.9-17.8% and 16.1-36.2% after BF and SF1, respectively, than control treatment. Additionally, the floodwater of the WV-amended treatments had higher NH4+-N concentration than control during the first three days after N fertilization, which can be attributed to the stimulating effect of WV on soil urease enzyme activity. WV did not effectively reduce NH3 volatilization as hypothesized. Interestingly, four WV-amended had relatively reduced the yield-scale NH3 volatilization by 13.6% than the control. It is suggested that WV needs to be applied with BC at a moderate rate to achieve optimum rice yield and mitigate NH3 volatilization. (C) 2019 Elsevier Ltd. All rights reserved.

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