|
| 生物炭对土壤无机氮含量影响的Meta分析 |
| A Meta-analysis of the effects of biochar on soil inorganic nitrogen content |
| 投稿时间：2023-07-12 修订日期：2023-11-01 |
| DOI：10.13254/j.jare.2023.0454 |
| 中文关键词: 生物炭，土壤无机氮，年均降雨量，年均气温，Meta分析 |
| 英文关键词: biochar, soil inorganic nitrogen, average annual rainfall, average annual temperature, Meta analysis |
| 基金项目:山西省基础研究计划项目（202103021223126）；山西农业大学科研专项（SXBYKY2022012）；国家现代农业产业技术体系项目（CARS-06-14.5-A20） |
|
| 摘要点击次数: 856 |
| 全文下载次数: 676 |
| 中文摘要: |
| 为系统探究生物炭对农田土壤无机氮含量的影响，基于2013—2023年已公开发表的65篇文献375组数据，利用Meta分析方法定量研究在不同气候条件、土壤质地、施氮量、还田年限和生物炭施用量条件下土壤无机氮含量对生物炭施用的响应。结果表明：生物炭施用显著提高了年均降雨量为600~1 000 mm区域的土壤无机氮含量，其中降雨量为957 mm时增幅最大；生物炭也显著提高了年均气温≥8 ℃地区的土壤无机氮含量。在砂土和壤土施用生物炭可明显提高土壤无机氮含量，与不施生物炭相比土壤无机氮含量增幅分别为 21.85% 和 11.05%。在田间试验条件下，施氮水平≤120 kg·hm-2时施用生物炭显著提升土壤无机氮含量，而在培养试验条件下不施氮时施用生物炭显著提高了土壤无机氮含量。施用生物炭年限≥1 a时能显著增加土壤无机氮含量；此外田间试验条件下生物炭施用量<0.5%时能显著提升土壤无机氮含量（17.70%）。综上所述，在年均降雨量600~1 000 mm、年均气温≥8 ℃、土壤质地为砂土和壤土的地区，当施氮量≤120 kg·hm-2、田间生物炭还田年限≥1 a、施用量<0.5%时，施用生物炭能显著增加土壤无机氮含量。 |
| 英文摘要: |
| To explore the effect of biochar on soil inorganic nitrogen（SIN）content in farmland, 375 sets of data of 65 published literatures from 2013 to 2023 were employed to analyze the response of biochar application to soil inorganic nitrogen content by Meta analysis. The results showed that biochar significantly increased SIN content in the area with an average annual rainfall of 600-1 000 mm, and the increase was obvious when the rainfall was 957 mm. When annual average temperature was more than 8 ℃, the enhanced SIN was also noticed. Further the influences of biochar on SIN content were also regulated by soil texture. It was increased by 21.85% and 11.05% for sandy soil and loam, respectively. In field, less than 120 kg·hm-2 N application rate promoted SIN content; whereas for culture experiment, the increased SIN content was induced when N was not applied. Substantially, when biochar application rate was less than 0.5%, SIN was increased significanty by 17.70% under conditions of field. The duration of biochar application also modulated the effects of biochar on SIN. The enhanced influence of biochar on SIN was observed when biochar was applied more than one year. In summary, the factors average annual rainfall, annual temperature, soil textures, nitrogen application rate, and biochar application rate along with biochar returning years impact the influences of biochar on SIN. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
