{"title":"Effects of nitrogen fertilization on the activity and biomass of fungi and bacteria in a podzolic soil","authors":"E. Bääth, B. Lundgren, B. Söderström","doi":"10.1016/S0721-9571(81)80021-X","DOIUrl":null,"url":null,"abstract":"<div><p>The activity and biomass of soil microorganisms were studied in a nitrogen-fertilized Scots pine forest moor in Sweden. The investigation was made five years after the application of 150, 300 and 600 kg N ha<sup>−1</sup> of each of urea and ammonium nitrate, respectively. Soil respiration rate and FDA-active fungal biomass were significantly lower in fertilized plots, the decrease in these levels being proportional to the amount applied. A tendency toward lower bacterial biomass after fertilization was also found. Similar results were obtained both in the organic and the mineral soil. There were no significant differences between the two types of fertilizer. Possible explanations for the results are discussed.</p></div>","PeriodicalId":101290,"journal":{"name":"Zentralblatt für Bakteriologie Mikrobiologie und Hygiene: I. Abt. Originale C: Allgemeine, angewandte und ?kologische Mikrobiologie","volume":"2 1","pages":"Pages 90-98"},"PeriodicalIF":0.0000,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0721-9571(81)80021-X","citationCount":"83","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zentralblatt für Bakteriologie Mikrobiologie und Hygiene: I. Abt. Originale C: Allgemeine, angewandte und ?kologische Mikrobiologie","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S072195718180021X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 83
Abstract
The activity and biomass of soil microorganisms were studied in a nitrogen-fertilized Scots pine forest moor in Sweden. The investigation was made five years after the application of 150, 300 and 600 kg N ha−1 of each of urea and ammonium nitrate, respectively. Soil respiration rate and FDA-active fungal biomass were significantly lower in fertilized plots, the decrease in these levels being proportional to the amount applied. A tendency toward lower bacterial biomass after fertilization was also found. Similar results were obtained both in the organic and the mineral soil. There were no significant differences between the two types of fertilizer. Possible explanations for the results are discussed.
研究了瑞典一处施氮松林沼地土壤微生物的活性和生物量。在尿素和硝酸铵分别施用150、300和600 kg N ha - 15年后进行调查。土壤呼吸速率和fda活性真菌生物量显著降低，且与施肥量成正比。施肥后细菌生物量有降低的趋势。在有机土和矿质土中都得到了类似的结果。两种肥料间无显著差异。对结果的可能解释进行了讨论。
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