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《Journal of Yunnan Agricultural University(Natural Science)》 2010-04
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Research on In-Situ Measurement of Soil-fixation Capability of Corn Roots

ZHENG Chao-yuan1,FAN Mao-pan1,ZHENG Yi1,Michael Augustin FULLEN2,LI Yong-mei1,Mudhu SUBEDI2(1.College of Resources and Environment,Yunnan Agricultural University,Kunming 650201,China;2.School of Applied Science,University of Wolverhampton,Wolverhampton,WV11SB,UK)  
Experiments of in-situ measuring the stabilization capability of soil by corn roots(10 cm and 20 cm) and bare soil square with the anchor-shank tension meter and self-designed shear box were conducted.The results indicated that when an equally load was applied,the displacement of bare soil square was higher than that of corn square in two depths,the displacement was the lowest in 20 cm depth.The higher the root took in the soil square,the more load which made soil square separate from bulk soil was required.The bending point-F2 and plastic deformation point-F3 of soil square with corn in 10 cm were 2.7 kN and 2.9 kN,respectively;those of soil square in 20.cm were 3.6 kN and 3.61 kN;those of bare soil square in 10 cm depth were 2.3 kN and 2.5 kN;those of bare soil square in 20 cm depth were 3.1 kN and 3.4 kN.It is proposed that that is an appropriate method in fix-quantify measure corn root soil-fixation capability in the agriculture soil and water conservation.
【Fund】: 欧盟第六框架协议国际科技合作研究项目(INCO-CT-2005-510745);; 云南省教育厅基金(09Y0199)
【CateGory Index】: S513
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