Soil Microorganism and Enzyme Activities Under Different Oasis Farmlands in the Ulanbuh Sandy Areas

BAO Yao-xian; XU Ming-gang; XIN Zhi-ming; SUN Fei

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Soil Microorganism and Enzyme Activities Under Different Oasis Farmlands in the Ulanbuh Sandy Areas

更新时间：2024-11-07

- Soil Microorganism and Enzyme Activities Under Different Oasis Farmlands in the Ulanbuh Sandy Areas
- Vol. 25, Issue 5, (2011)
- 作者机构：
  
  1. 中国农业科学院农业资源与农业区划研究所
  2. 中国林业科学研究院沙漠林业实验中心
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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BAO Yao-xian, XU Ming-gang, XIN Zhi-ming, et al. Soil Microorganism and Enzyme Activities Under Different Oasis Farmlands in the Ulanbuh Sandy Areas[J]. 2011, 25(5).
DOI：

BAO Yao-xian, XU Ming-gang, XIN Zhi-ming, et al. Soil Microorganism and Enzyme Activities Under Different Oasis Farmlands in the Ulanbuh Sandy Areas[J]. 2011, 25(5). DOI：

摘要

以撂荒地为对照

通过测定0-20cm和20-40cm层次土样

利用统计分析方法系统研究乌兰布和沙区籽瓜、玉米、油葵和苜蓿地4种绿洲农田土壤微生物(细菌、放线菌和真菌)和土壤酶活性(蔗糖酶、脲酶、过氧化氢酶、碱性磷酸酶、蛋白酶和多酚氧化酶)特征。结果表明:(1)各农田微生物数量均为细菌(107)>放线菌(105)>真菌(103)

三者中

细菌数量占三大类微生物总数的99%以上;各农田表层微生物数量整体高于对照的

且表层均高于下层

但差异不显著;农田间

籽瓜地微生物数量最多;种植苜蓿可显著提升真菌数量。(2)6种酶活性中

仅蔗糖酶和脲酶在层次间和农田间存在显著差异;各农地表层蔗糖酶、脲酶、过氧化氢酶和蛋白酶活性均高于对照的;除多酚氧化酶外

苜蓿地酶活性整体较高。(3)各生物学性质相互关联

互相影响。6种酶间呈显著或极显著相关

酶活性既显专性又显共性;蔗糖酶、过氧化氢酶、脲酶、蛋白酶、多酚氧化酶、真菌和放线菌直接影响有机质含量的程度达85%;总体而言

乌兰布和沙区绿洲体系形成后

长期农作活动使得绿洲农田生物学性质得以改善

土壤质量整体有所提高;设法提高研究区土壤有机质含量是提高绿洲农田土壤质量和改善其生态环境的关键...

Abstract

For contrast with abandoned land

through measuring soil samples in 0-20 cm and 20-40 cm soil layers

and using statistical analytical method

the distribution characteristics of soil microorganism and soil enzyme activities of typical oasis farmlands for Citrullus lanatus(Thunb.) Matsum.et Nakai

Zea mays L.

Helianthus annuus Linn.and Medicago sativa Linn.in the Ulanbuh sandy areas were studied systematically.The results showed that:(1)Microorganism quantities was bacteria(107)>actinomycetes(105)>fungi(103)

am...

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