牛粪和猪粪施用终止12年后的土壤化学特性

IF 2.4 3区 农林科学 Q2 SOIL SCIENCE Soil Science Society of America Journal Pub Date : 2023-08-09 DOI:10.1002/saj2.20584
A. Schlegel, J. Holman, A. Obour, L. Haag, H. D. Bond, Y. Assefa
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摘要

在施用停止后,长期施用粪肥和猪排泄物的营养供应将持续多久以维持作物生产,这是一个研究空白。我们量化了牛粪和猪污水应用停止12年后土壤化学性质的变化。堪萨斯州立大学西南研究扩展中心于2008年(申请终止)和2020年收集了一项长期动物废物研究的数据。处理是三个水平的牛粪和猪排泄物(P,N,2N)和未处理的对照。与2020年相比,土壤剖面NO3-N在猪污水、牛粪和未经处理的检查中的残留量分别比2008年的初始量下降了78-95%、70-82%和58%。基于磷的猪污水处理和牛粪和猪污水的2N率大大提高了剖面NO3-N水平,12年后仍保持较高水平(>250 kg ha−1)。牛粪处理使表层土壤中的总氮减少了11-27%,而猪粪和对照处理的变化很小。表层土壤中的总碳浓度从牛粪处理的22-31%下降,从猪污水和对照处理的7-14%下降。Mehlich‐3 P在牛粪处理中显著降低(41-53%),但仍保持很高水平(>100 mg kg−1)。猪处理的土壤试验P水平与对照处理相似。牛粪和猪排泄物的施用在停止施用后很长一段时间内对许多土壤化学性质具有持久的影响。这篇文章受版权保护。保留所有权利
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Soil chemical properties 12 years after termination of cattle manure and swine effluent applications
For how long the nutrient supply from long‐term application of manure and swine effluent will last to sustain crop production after applications had ceased is a research gap. We quantified the change in soil chemical properties 12 years after cattle manure and swine effluent applications had ceased. Data was collected in 2008 (termination of applications) and 2020 on a long‐term animal waste study at the Kansas State University, Southwest Research‐Extension Center near Tribune, KS. Treatments were three levels of cattle manure and swine effluent (P, N, 2N) and an untreated control. Soil profile NO3‐N declined 78–95%, 70–82%, and 58% from the initial amount in 2008 compared to the amount remaining in 2020 in the swine effluent, cattle manure, and an untreated check, respectively. Profile NO3‐N levels were greatly elevated by the P based swine effluent treatment and the 2N rate of both cattle manure and swine effluent and remained high (>250 kg ha−1) after 12 years. Total nitrogen in the surface soil decreased by 11–27% for cattle manure treatments with little change in the swine effluent and check treatments. Total carbon concentration in the surface soil decreased from 22–31% for cattle manure treatments and from 7–14% for swine effluent and check treatments. Mehlich‐3 P decreased significantly for the cattle manure treatments (41‐53%) but still remained very high (> 100 mg kg−1). Soil test P levels in the swine treatments were similar to the check treatment. Application of cattle manure and swine effluent has lasting effects on many soil chemical properties long after ceasing applications.This article is protected by copyright. All rights reserved
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来源期刊
Soil Science Society of America Journal
Soil Science Society of America Journal 农林科学-土壤科学
CiteScore
5.40
自引率
3.40%
发文量
130
审稿时长
3.6 months
期刊介绍: SSSA Journal publishes content on soil physics; hydrology; soil chemistry; soil biology; soil biochemistry; soil fertility; plant nutrition; pedology; soil and water conservation and management; forest, range, and wildland soils; soil and plant analysis; soil mineralogy, wetland soils. The audience is researchers, students, soil scientists, hydrologists, pedologist, geologists, agronomists, arborists, ecologists, engineers, certified practitioners, soil microbiologists, and environmentalists. The journal publishes original research, issue papers, reviews, notes, comments and letters to the editor, and book reviews. Invitational papers may be published in the journal if accepted by the editorial board.
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