施用粉煤灰对沙土土面蒸发的影响

通过自然条件下蒸发试验，研究了4种粉煤灰施用率对沙土土面蒸发的影响。结果表明，粉煤灰的施用减弱了沙土土面蒸发水平，增强了沙土的保水性能。通过对蒸发过程的日观察，粉煤灰的施用始终表现出减弱沙土蒸发的能力，且呈现出随粉煤灰施用率增多而蒸发能力愈弱的特点。施用率10％处理土壤总蒸发量与对照试验大致相同，施用率20％、30％、...

Effect of Soil Surface Evaporation with Fly Ash as Sandy Soil Amendment

Based on evaporation experiment in natural condition,research were carried out to study the effect of water retention capacity of sandy soil under four fly ash application rate(10%,20%,30%,40%).Results showed that,the usage of fly ash reduced evaporation capability and enhance water retention capacity of sandy soil.The evaporation capability always reduced by the effort of fly ash application throughout the experiment,and showed that less evaporation effect with increasing fly ash application rate.As total evaporation,compared with controlled experiment,the total evaporation of three treatments of 20%,30%,40% reduced 8.3%,13.0%,27.2% except 10% treatment has similar evaporation.