Effect of Sand and Straw Mulching on the Water Evaporation Characteristics of Aeolian Sandy Soil
Exploring the influence mechanism of different thickness of sand,gravel and straw cover on soil water evaporation in the wind-blown sandy soil in northwest Liaoning Province,especially under different initial water content,and exploring the best model to inhibit soil water evaporation in the wind-blown sandy soil in north western Liaoning Province,which can provide a theoretical basis for vegetation construction in the wind-blown sandy area.For the first time,taking the Aeolian sandy soil in the northwest of Liaoning Province as the research object,a 20-day indoor evaporation simulation experiment was carried out with a self-designed evaporation barrel to study the variation of soil evaporation with evaporation time.The results show that the sand,gravel and straw mulching could inhibit soil water evaporation,and the thickness of mulching and initial soil moisture content were closely related to this inhibition.With the increase of initial moisture content,the greater the coverage thickness of sand and straw,the smaller the cumulative evaporation of soil,and the more stable the evaporation intensity of soil.
aeolian sandy soilgravel mulchstraw mulchsoil moisturesoil water evaporation
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