数字农科院2.0

Alleviation of soil acidification using livestock manure increases nitrogen supply while stimulating N2O emission in a tea plantation

文献类型： 外文期刊

作者： Wang Jing;Yu Debang;Huang Qiao;Lu Lu;Jing Hang;Qian Yinfei;Ni Kang;Cheng Yi

作者机构：

关键词： Acidification amelioration;livestock manure;N2O emission;net nitrification rates;tea soil

期刊名称： Archives of Agronomy and Soil Science

ISSN： 0365-0340

年卷期： 2025 年 71 卷 1 期

页码：

收录情况： SCIE（2025版）

摘要： Excessive application of nitrogen (N) fertilizer has acidified soils to pH levels below the optimum, posing a threat to tea plant cultivation. Organic livestock manure rich in alkaline substances can counteract the H+ produced by soil nitrification of N fertilizer. However, how ameliorating acidification using livestock manure affects nitrification and greenhouse gas nitrous oxide (N2O) emissions in tea-planted soils remains unclear. Here, by adding four types of manure (cow, sheep, chicken, and pig) at rates of 0, 100, and 200 mg N kg−1 into a tea-planted soil, we showed that all manure additions alleviated soil acidification and increased net N mineralization and nitrification significantly, with the increases becoming more pronounced with increasing rate. While soil cumulative N2O emissions were enhanced significantly by sheep, chicken, and pig manure and reduced significantly by cow manure at the high rate, with opposite trends at the low rate. Net nitrification and cumulative N2O emissions were significantly and negatively correlated with carbon (C)/N of added manure at both rates and at the high rate alone, respectively. Our findings highlight the importance of selecting the appropriate livestock manure (i.e. high C/N) to alleviate soil acidification while minimizing nitrification and N2O emissions.

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