咖啡废弃物作为一种环保、低成本的生物炭替代品对沙质土壤化学属性和微生物基因丰度的影响

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY
Cíntia Caroline Gouveia da Silva, É. Medeiros, G. Fracetto, F. Fracetto, A. P. Martins Filho, J. R. D. Lima, G. P. Duda, D. P. Costa, M. A. Lira Junior, C. Hammecker
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引用次数: 8

摘要

生物炭是一种由农业工业废弃物热解产生的材料,已成为改善土壤质量的最有前途的管理工具之一。其目的是确定将不同咖啡废料中的生物炭掺入与玉米一起种植的沙质土壤中,对土壤化学和微生物特性的影响。试验采用2 × 3 + 1因子设计,采用咖啡渣(CG)和咖啡壳(CH)两种生物炭,分别饲喂3个剂量(4、8和16 t·ha-1)和单独饲喂牛粪(3 t·ha-1)的对照。变量包括土壤有机碳、化学属性、微生物生物量(C、N、P)、土壤基础呼吸和微生物基因丰度(16S rRNA、18S rRNA和nifH基因)。8 t·ha-1施氯能显著提高土壤的大部分化学属性,使土壤C:N比(3.5倍)、P(2.1倍)和K+(7.9倍)增加;4 t·ha-1施氯能使土壤C含量、微生物量C和N分别增加3倍、2.1倍和1.6倍。在16 t·ha-1浓度下施用CG生物炭有增加细菌、真菌和重氮营养基因丰度的趋势(分别为11%、10%和2%)。两种咖啡生物炭类型的贡献,但主要是CH,比单独施用有机肥的土壤更有效。咖啡废弃物中的生物炭是一种很有前途的改善沙质土壤质量的工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Coffee waste as an eco-friendly and low-cost alternative for biochar production impacts on sandy soil chemical attributes and microbial gene abundance
Biochar is a material produced by the pyrolysis of agro-industrial waste, which has become one of the most promising management tools to improve soil quality. The aim was to determine the effects of incorporating biochar from different coffee wastes in sandy soil, cropped with maize, on soil chemical and microbial attributes. The experiment followed a factorial design 2 × 3 + 1 with two types of biochar, including coffee ground (CG) or coffee husk (CH) in 3 doses (4, 8, and 16 t·ha-1) and a control fertilized solely with bovine manure (3 t·ha-1). The variables analyzed were soil organic carbon, chemical attributes, microbial biomass (C, N and P), soil basal respiration and microbial gene abundance (16S rRNA, 18S rRNA and nifH gene). Most chemical attributes were strongly increased by CH application, while CG at 8 t·ha-1 increased the soil C:N ratio (3.5 times), P (2.1 times) and K+ (7.9 times) and at 4 t·ha-1 increased the C content, microbial biomass C and N (3, 2.1 and 1.6 times, respectively). The application of CG biochar at 16 t·ha-1 showed trend to increase the abundance of bacteria, fungi and diazotrophic genes (11, 10 and 2%, respectively). Contribution of both coffee biochar types, but mainly CH, was more effective than the soil that received organic manure alone. Biochar from coffee wastes is a promising tool to improve sandy soil quality.
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来源期刊
Bragantia
Bragantia AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
2.40
自引率
8.30%
发文量
33
审稿时长
4 weeks
期刊介绍: Bragantia é uma revista de ciências agronômicas editada pelo Instituto Agronômico da Agência Paulista de Tecnologia dos Agronegócios, da Secretaria de Agricultura e Abastecimento do Estado de São Paulo, com o objetivo de publicar trabalhos científicos originais que contribuam para o desenvolvimento das ciências agronômicas. A revista é publicada desde 1941, tornando-se semestral em 1984, quadrimestral em 2001 e trimestral em 2005. É filiada à Associação Brasileira de Editores Científicos (ABEC).
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