中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
小麦根系机械作用对土壤水分特征曲线的影响

文献类型:期刊论文

作者马昌臣 ; 王飞 ; 穆兴民 ; 康绍忠
刊名水土保持学报
出版日期2013
卷号27期号:02页码:105-05
关键词土壤 :soil 种植密度 planting density 土壤水分特征曲线 soil water characteristic curve(SWCC) 孔隙 pore 小麦 wheat
其他题名Effect of the Mechanical Action of Wheat Roots on Soil Water Characteristic Curve
中文摘要为探讨小麦根系机械作用对土壤水分特征曲线的影响,通过室内土柱试验,分层测定了0-40cm土层小麦不同种植密度下的土壤水分特征曲线,以及土壤饱和含水量、毛管水含量等水力特征参数,并用Gardner模型对土壤水分特征曲线进行拟合,对比研究了小麦不同种植密度下土壤水分特征曲线及持水性、供水性以及土壤水分有效性。结果表明:由于不同种植密度及不同土层小麦根系发育与分布的差异,使其对土壤机械作用程度不同,导致土壤水分特征曲线存在明显差异。根系对土壤不同大小孔隙影响程度不同,使土壤饱和含水量、毛管水含量以及土壤有效水含量都受到不同程度的影响。而土壤的供水能力也因土壤孔隙的变化而发生改变,0-20cm土层土壤供水能力呈现随种植密度增大而减弱的趋势;而20-40cm土层,较高种植密度逐渐显现出更强的供水能力。
英文摘要Abstract:A laboratory soil column experiment planted wheat with different density was conducted to study
the effect of the wheat root’s mechanical action on soil water characteristic curve(SWCC).Soil water
characteristic curve,saturated water content and capillary water in 0-40cm soil layers were measured layerby-
layer.Gardner model was used to describe SWCC.SWCC,water-holding capacity and water supplying
capability of different planting density were studied.The results showed that:Due to the difference of roots
growth and distribution in different planting density or soil layer,the degree of mechanical effect on soil
varied.That’s why SWCC changed.Different size soil pores were affected,but the degrees were different.
For this reason,saturated water content,capillary water and available water of different treatment were
different from each other.Soil water supply capacity also varied for the change of soil pores.With the
increase of planting density,it decreased in 0-20cm soil layer.While in 20-40cm soil layer,soil with
higher planting density had better soil water supply capacity.
语种中文
公开日期2014-10-21
源URL[http://ir.iswc.ac.cn/handle/361005/5584]  
专题水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式
GB/T 7714
马昌臣,王飞,穆兴民,等. 小麦根系机械作用对土壤水分特征曲线的影响[J]. 水土保持学报,2013,27(02):105-05.
APA 马昌臣,王飞,穆兴民,&康绍忠.(2013).小麦根系机械作用对土壤水分特征曲线的影响.水土保持学报,27(02),105-05.
MLA 马昌臣,et al."小麦根系机械作用对土壤水分特征曲线的影响".水土保持学报 27.02(2013):105-05.

入库方式: OAI收割

来源:水土保持研究所

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