在农业土壤中施用碱性生物固体后的酶活性

IF 1.5 4区农林科学 Q4 SOIL SCIENCE

Canadian Journal of Soil Science Pub Date : 2022-10-21 DOI:10.1139/cjss-2022-0056

B. Sun, C. Kallenbach, M. Boh, O. G. Clark, J. Whalen

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引用次数: 1

摘要

摘要城市污水生物固体是营养丰富的残留物，如果其碱度不会对土壤生化过程产生不利影响，则有可能作为作物肥料。本研究评估了在青贮玉米（Zea mays L.）下传统耕作的田地中每年施用三次生物固体后的潜在土壤酶活性。与尿素和未施肥对照相比，生物固体是通过中温厌氧消化、石灰稳定或堆肥处理的城市废水污泥。一般来说，潜在的土壤酶活性不会随着生物固体的施用而改变，但在石灰稳定的生物固体改良的土壤中，N-乙酰氨基葡糖苷酶活性增加，土壤pH值更高，土壤NH4+浓度更高。

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Enzyme activity after applying alkaline biosolids to agricultural soil

Abstract Municipal wastewater biosolids are nutrient-rich residuals with potential as crop fertilizer, if their alkalinity does not adversely affect soil biochemical processes. This study assessed the potential soil enzyme activity after three annual applications of biosolids in a conventionally tilled field under silage corn (Zea mays L.). Biosolids were municipal wastewater sludge treated by mesophilic anaerobic digestion, lime stabilization, or composting, compared with urea fertilizer and an unfertilized control. Generally, the potential soil enzyme activity did not change with biosolids application, but the N-acetylglucosaminidase activity increased in soil amended with lime-stabilized biosolids, which also had higher soil pH and greater soil NH4+ concentration.

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来源期刊

Canadian Journal of Soil Science 农林科学-土壤科学

CiteScore

2.90

自引率

11.80%

发文量

审稿时长

6.0 months

期刊介绍： The Canadian Journal of Soil Science is an international peer-reviewed journal published in cooperation with the Canadian Society of Soil Science. The journal publishes original research on the use, management, structure and development of soils and draws from the disciplines of soil science, agrometeorology, ecology, agricultural engineering, environmental science, hydrology, forestry, geology, geography and climatology. Research is published in a number of topic sections including: agrometeorology; ecology, biological processes and plant interactions; composition and chemical processes; physical processes and interfaces; genesis, landscape processes and relationships; contamination and environmental stewardship; and management for agricultural, forestry and urban uses.