Size Hierarchy and Stability of Soil Aggregates in Solar Greenhouse Soils with Different Planted Years

PEI Zhongjian; LIANG Chenghua; YIN Yan

doi:10.13961/j.cnki.stbctb.2015.06.012

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Size Hierarchy and Stability of Soil Aggregates in Solar Greenhouse Soils with Different Planted Years

- Size Hierarchy and Stability of Soil Aggregates in Solar Greenhouse Soils with Different Planted Years
- Bulletin of Soiland Water Conservation Vol. 35, Issue 6, Pages: 70-74(2015)
- 作者机构：
  
  沈阳农业大学土地与环境学院,辽宁,沈阳,110866
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.06.012
  CLC：
- Published：2015
- 稿件说明：
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PEI Zhongjian, LIANG Chenghua, YIN Yan. Size Hierarchy and Stability of Soil Aggregates in Solar Greenhouse Soils with Different Planted Years[J]. Bulletin of Soiland Water Conservation, 2015, 35(6): 70-74.
DOI：

PEI Zhongjian, LIANG Chenghua, YIN Yan. Size Hierarchy and Stability of Soil Aggregates in Solar Greenhouse Soils with Different Planted Years[J]. Bulletin of Soiland Water Conservation, 2015, 35(6): 70-74. DOI： 10.13961/j.cnki.stbctb.2015.06.012.

摘要

[目的] 揭示不同栽培年限日光温室土壤团聚体分布及稳定性的变化趋势

为探明设施蔬菜栽培土壤结构变化规律提供理论依据。[方法] 以辽宁省新民市设施蔬菜栽培基地温室土壤为研究对象

并以温室外露地土壤为对照

研究了栽培年限为2

16 a的日光温室土壤团聚体不同粒级的组成分布、机械稳定性、水稳性和团聚体破坏率的变化趋势。[结果] 不同栽培年限的土壤>0.25 mm团聚体数量、机械稳定性和水稳性均呈降低趋势

且低于露地土壤;栽培时间长于5 a后

>0.25 mm团聚体数量、机械稳定性和水稳定性有所升高。供试土壤在栽培初期

土壤中有机质对团聚体的形成和稳定性维持没有起到促进作用

随着栽培时间的增长

有机质促进了团聚体的形成和稳定。[结论] 研究区域温室土壤团聚体稳定性随栽培年限的增长呈先降低后升高的趋势。

Abstract

[Objective] Changing trends of size hierarchy and stability of soil aggregates in solar greenhouse soils were illustrated along years of plantation to provide some theoretical bases for the change of soil structure in vegetable cultivation.[Methods] Soils with different plantation years in four vegetable greenhouses(with 2

8 and 16 years of plantation)in Xinmin City of Liaoning Province were selected as the research objects

and nearby soils in open fields outside of the greenhouses were selected for comparison. Indices of composition

mechanical stability

water stability and damage rate of soil aggregate were measured.[Results] Within 5 years of plantation

quantity of >0.25 mm

mechanical stability and water stability of soil aggregates showed a decreasing trend along plantation

and they were lower than that of the comparative soil in open fields; After 5 years of plantation

they all were elevated significantly. At the beginning of the cultivation of the tested soil

organic matter didn't play its role in the aggregate formation and stability maintenance; While

with the increase of planting time

organic matter began to promote the formation and maintain the stability of soil aggregates.[Conclusion] The stability of soil aggregate in the regional greenhouse decreased firstly and then increased with the increase of the planting years.

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references

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