Structure and Functional Diversity of Soil Microbes in Gravel-mulched Farmlands Around Xiangshan Region of Ningxia Hui Autonomous Region

WANG Zhan-jun; JIANG Qi; HE Jian-long; MA Kun

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Structure and Functional Diversity of Soil Microbes in Gravel-mulched Farmlands Around Xiangshan Region of Ningxia Hui Autonomous Region

- Structure and Functional Diversity of Soil Microbes in Gravel-mulched Farmlands Around Xiangshan Region of Ningxia Hui Autonomous Region
- Bulletin of Soiland Water Conservation Vol. 32, Issue 6, Pages: 290-294(2013)
- 作者机构：
  
  1. 宁夏农林科学院荒漠化治理研究所,宁夏,银川,750002
  2. 宁夏大学农学院,宁夏,银川,750021
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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WANG Zhan-jun, JIANG Qi, HE Jian-long, et al. Structure and Functional Diversity of Soil Microbes in Gravel-mulched Farmlands Around Xiangshan Region of Ningxia Hui Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2013, 32(6): 290-294.
DOI：

WANG Zhan-jun, JIANG Qi, HE Jian-long, et al. Structure and Functional Diversity of Soil Microbes in Gravel-mulched Farmlands Around Xiangshan Region of Ningxia Hui Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2013, 32(6): 290-294. DOI：

摘要

对压砂地不同利用年限下的土壤微生物群落结构及功能多样性进行了分析。研究结果表明

压砂地不同利用年限的土壤微生物群落总菌数整体上明显低于农田对照

且随着压砂利用年限的增加土壤微生物总菌数呈逐年下降的趋势。压砂利用1~3a

5~10a

10~15a之间均存在显著差异<0.05)。压砂第1a对土壤微生物的功能影响很大

能明显提高微生物对C源的利用能力。压砂1a后

随着压砂利用年限的增加土壤微生物的功能明显下降

且不同压砂年限间的微生物功能差异不显著

说明农田压砂初期由于土地利用方式的改变

提高了土壤蓄水保墒及增温效果

使得土壤微生物物功能和利用强度增加

随着压砂地利用年限的增加作物对土壤养分消耗增大

而土壤中养分得不到补充

使得压砂地土壤微生物环境逐步恶化。

Abstract

The structure and functional diversity of soil microbial community in gravel-mulched farmland were analyzed under the different years. The results indicated that the total number of microbial community in gravel-mulched farmlands under the different years was significantly lower than that in control farmland

and the total number of microbial community was gradually decreased with the increase of mulched years

and there were significant difference among 1-3 a

5-10 a and 10-15 a gravel-mulched farmland(p

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