荒地不同压砂年限对土壤微生物区系、酶活性与土壤理化性状的影响

胡景田; 马琨; 王占军; 何建龙

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荒地不同压砂年限对土壤微生物区系、酶活性与土壤理化性状的影响

试验研究

- 荒地不同压砂年限对土壤微生物区系、酶活性与土壤理化性状的影响
- Effects of Gravel Mulch on Soi l Microbial Population, Enzyme Activity and Physicochemical Properties in Wasteland
- 水土保持通报 2010年29卷第3期页码：53-58
- 作者机构：
  
  1. 宁夏大学农学院,宁夏,银川,750021
  2. 宁夏农林科学院荒漠化治理研究所,宁夏,银川,750002
- 作者简介：
- 基金信息：
  
  国家科技支撑计划课题“压砂地可持续发展机理研究及生态系统综合评价”(2007BAD54B05)
- DOI：
  中图分类号：
- 纸质出版：2010
- 稿件说明：
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胡景田, 马琨, 王占军, 等. 荒地不同压砂年限对土壤微生物区系、酶活性与土壤理化性状的影响[J]. 水土保持通报, 2010,29(3):53-58.

HU Jingtian, MA Kun, WANG Zhanjun, et al. Effects of Gravel Mulch on Soi l Microbial Population, Enzyme Activity and Physicochemical Properties in Wasteland[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 53-58.
胡景田, 马琨, 王占军, 等. 荒地不同压砂年限对土壤微生物区系、酶活性与土壤理化性状的影响[J]. 水土保持通报, 2010,29(3):53-58. DOI：

HU Jingtian, MA Kun, WANG Zhanjun, et al. Effects of Gravel Mulch on Soi l Microbial Population, Enzyme Activity and Physicochemical Properties in Wasteland[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 53-58. DOI：

摘要

以宁夏中卫市香山地区荒地压砂3

25a和邻近未压砂(对照)的土壤为研究对象

研究了压砂对土壤微生物区系、酶活性和土壤理化性状的影响。结果表明

与对照相比

压砂后微生物总数减少;土壤脲酶活性随着压砂年限的延长呈下降趋势;前15a压砂地土壤有机碳、全氮、碱解氮和速效钾随着压砂年限的延长呈下降趋势;压砂地土壤含水量高于对照;压砂地全盐含量远远低于对照;说明荒地压砂种植能蓄水保墒

防止土壤次生盐碱化

但连续种植肥力下降

微生物量减少。

Abstract

The effects of gravel mulch on soil microbial population

enzyme activity

and physicochemical properties were evaluated on the wasteland in Xiang shan area

Zhongwei City

Ningxia Hui Autonomous Region. Four typical sites were selected as a chronological sequence ( 3

and 25 years) and an adjacent no n-mulched gravel land was taken as the control. Results indicated that compared with the control

the number of microbes in the gravel mulched field was decreased. With the increased year of gravel mulched field

soil urinary enzyme activity presented a declined trend. The contents of soil organic carbon

total nitrogen

available nitrogen

and potassium declined for the sites of 3

and 15 years. The soil water content in gravel mulched field was higher than the control

but the total salt content was much lower than the control.It is suggested that gravel mulch on wasteland can restore vegetation through preserving water

but soil fertility and microbial biomass are low .

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