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《Journal of Yunnan Agricultural University》 2008-06
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Researches on In-situ Measurement of the Soil Fixing Capability of Rape Roots

MAO Yan-ting1,ZHENG Yi1,Michael Augustin FULLEN2,LI Yong-mei1,Mudhu SUBEDI2(1.Faculty of Resources and Environment,Yunnan Agricultural University,Kunming 650201,China;2.School of Applied Science,University of Wolverhampton,WV11SB,UK)  
Experiments of in-situ measuring the stabilization capability of soil by rape roots in 10 cm depth with the anchor-shank tensiometer and self-designed shear box were conducted.The results showed that when a 3.5 KN load was applied,the displacements of sample plot 1(roots density =1.11 kg/m3),sample plot 2(roots density =0.57 kg/m3) and control plot reached 38.0 mm,46.0 mm and 49.7mm,respectively.The higher the root density was in the sample plot,the more loads which made sample plot separate from bulk soil was required.The bending point-F2 and plastic deformation point-F3 of sample plot 1 were 3.5 kN and 4.0 kN,respectively;those of sample plot 2 were 3.1 kN and 3.5 kN.It is proposed that this is an appropriate method to evaluate the root function of different crops or plants in maintaining slope stability.
【Fund】: 欧盟第六框架协议国际科技合作研究项目(INCO-CT-2005-510745)
【CateGory Index】: S565.4
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