Effect of synthetic and natural water absorbing soil amendments on soil microbiological parameters under potato production in a semi-arid region

文献类型： 外文期刊

第一作者： Xu, Shengtao

作者： Xu, Shengtao;Xu, Shengtao;McLaughlin, Neil B.;Xu, Shengtao;Zhou, Lei;Mi, Junzhen;Liu, Jinghui;Zhang, Lei

作者机构：

关键词： Soil amendment;Soil microbiological properties;Soil enzymatic activity;Soil microbial biomass

期刊名称：EUROPEAN JOURNAL OF SOIL BIOLOGY （ 影响因子：2.846； 五年影响因子：3.618 ）

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收录情况： SCI

摘要： The effect of water absorbing soil amendments on soil microbiological properties (soil enzyme activity and soil microbial biomass) was investigated in a field experiment under potato production in a semi-arid region in northern China in 2010-2012. Treatments included two different synthetic water absorbing amendments (potassium polyacrylate-PAA, polyacrylamide-PAM) and one natural amendment (humic acid-HA), both as single amendments, and combined amendments (natural combined with a synthetic) and a no amendment control. Soil amendments had a highly significant effect (P <= 0.01) on soil enzyme activity (catalase, invertase, urease and phosphatase) and soil microbial biomass (carbon, nitrogen and phosphorus). The PAM + HA amendment treatment achieved the greatest effect on soil microbiological properties of all of the amendment treatments, both in all soil layers between 0 and 40 cm, and at all four measurement periods during the growing season. Soil amendments improved the catalase, invertase, urease and phosphate by 4.6-39.8%, 4.4-27.7%, 3.7-40.4% and 0.9-29.8% respectively and increased soil microbial biomass carbon, nitrogen and phosphorus by 2.5-27.3%, 2.4-28.1% and 3.5-31.6% respectively in all three years. Water absorbing soil amendments improved soil quality by increasing soil moisture content and its microbiological status, as reflected in the values of microbial biomass and enzymatic activity. (C) 2016 Published by Elsevier Masson SAS.

分类号： S154

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