The effect of pruned tea leave biochar and cattle manure for soil acidification

IF 5 3区农林科学 Q1 SOIL SCIENCE Soil Use and Management Pub Date : 2024-07-26 DOI:10.1111/sum.13091

Chen Kelin, Li Yiheng, Zhang Heng, Long Kang, Yan Yunfei, Zhou Yingjie, Tang Keming

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Abstract

Soil acidification in tea gardens has become an increasingly serious problem. In this study, we conducted an outdoor pot experiment to investigate the effects of pruned tea leaf biochar and cattle manure on soil acidification. We observed that amendments effectively increased soil pHBC, which increased 12.43%, 3.24%, 8.38%, 5.68% and 11.35% for BC, M, BCM1, BCM2 and BCM3. Exchangeable K+, Na+, Ca2+ and Mg2+ concentrations increased after application of the amendments. Furthermore, the total exchangeable acidity concentration (EA) and the exchangeable Al3+ and H+ concentration (Al3+ and H+) decreased after application of amendments. In addition, pHBC showed a strong positive correlation with K+, Na+, Ca2+, Mg3+ and cation exchange capacity and strong negative correlations with EA and Al3+. Moreover, EA and K+ were the primary factors influencing pHBC. The relationships among pHBC, EA and K+ can be expressed as a power function.

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剪枝茶叶生物炭和牛粪对土壤酸化的影响

茶园土壤酸化问题日益严重。在本研究中，我们进行了室外盆栽实验，研究剪枝茶叶生物炭和牛粪对土壤酸化的影响。我们观察到，添加剂能有效提高土壤 pHBC，BC、M、BCM1、BCM2 和 BCM3 的 pHBC 分别提高了 12.43%、3.24%、8.38%、5.68% 和 11.35%。施用改良剂后，可交换的 K+、Na+、Ca2+ 和 Mg2+ 浓度均有所增加。此外，施用添加剂后，总交换性酸度浓度（EA）和可交换性 Al3+ 和 H+ 浓度（Al3+ 和 H+）均有所下降。此外，pHBC 与 K+、Na+、Ca2+、Mg3+ 和阳离子交换容量呈强正相关，而与 EA 和 Al3+ 呈强负相关。此外，EA 和 K+ 是影响 pHBC 的主要因素。pHBC 、EA 和 K+ 之间的关系可以用幂函数来表示。

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来源期刊

Soil Use and Management 农林科学-土壤科学

CiteScore

7.70

自引率

13.20%

发文量

审稿时长

3 months

期刊介绍： Soil Use and Management publishes in soil science, earth and environmental science, agricultural science, and engineering fields. The submitted papers should consider the underlying mechanisms governing the natural and anthropogenic processes which affect soil systems, and should inform policy makers and/or practitioners on the sustainable use and management of soil resources. Interdisciplinary studies, e.g. linking soil with climate change, biodiversity, global health, and the UN’s sustainable development goals, with strong novelty, wide implications, and unexpected outcomes are welcomed.