Effect of Different Depth Straw Mulching on Soilwater Movement and Salt Transport under Saline-alkali Drip Irrigation for the Cotton
Abstract：To investigate the influence of soil water movement and salt transport by the straw mulching under the drip irrigation,three treatments were establishment to compare and experiment including surface straw mulching,straw mulching at depth of 30cm from surface and no straw mulching,the results show.The straw mulching indirectly affects transportation and distribution of soil salinity through the influence of soil moisture.The straw mulching at depth of 30 cm from surface mainly affects about above 30 cm water moisture and salinity of the soil,which has the relatively approach effects on the surface mulching and below the 35 cm.To adopt the straw mulching has a certain influence on the level direction transportation of soil moisture and soil salinity,the soil surface salt content of no straw mulching respectively is maximal in the evaporation process from the early stage to later period.The rising of the soil capillary water below the depth of 35 cm was obstructed through mulching the straw at the depth of 30 cm,and then the rising of salinity was obstructed.After adopting the straw mulching,especially adopting the straw mulching at the depth of 30 cm from surface,it has positive effects on controlling the variation of soil water-salt and repressing the soil salt up.
Keywords：cottondrip irrigationstraw mulchingsoil water movement and salt transport
Publication Date：2012-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 37-41 )