Effect of Rock Fragment Coverage and Content on Soil M oisture of Farmland in Loess Plateau
ZHAO Mei
WANG Yu-ning
LIU He-ping
Abstract：To study the effect of rock fragment on the change of farmland soil moisture in the Loess Plateau ,this paper designed two existence forms of rock fragment ,rock fragment coverage and soil-rock fragment mixture ,according the existence forms of rock fragment in nature ,and mo-nitored the variation of soil moisture periodically .The results showed that both the rock fragment coverage and no rock fragment coverage made the soil moisture increased first and then decreased slowly with the increase of soil depth .But the soil moisture content of rock fragment coverage treatment decreased significantly lower than no rock fragment coverage treatment ,and it de-creased less slowly with the increase of rock fragment coverage .The soil-rock fragment mixture made a wave increase of the soil moisture in particular the high rock fragment content treatment , but the soil moisture of no rock fragment mixed treatment increased gently and slowly .In short , rock fragment coverage can effectively inhibit the surface soil moisture evaporation ,and increase the infiltrative depths ,w hile rock fragment stone inlaid in the soil can change the physical proper-ties of soil ,and increase the infiltration rate and number of macropore ,soil water content in soil , especially the high rock fragment content treatment .
Keywords：Loess Plateaurock fragment coveragesoil-rock fragment mixturesoil moisture
Publication Date：2013-12-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 59-63 )