木质素类聚合物对土壤降水渗透性的影响研究

Effects of Lignin Polymers on Infiltration of Rain Through Soil

通过土壤渗透试验,研究了木质素类聚合物对土壤渗透性的影响。结果表明,木质素类聚合物对土壤降水渗透性具有明显的促进作用,渗透率较对照提高了50%。在1￣4kg·hm-2用量条件下,碱木质素聚合物的促渗效果与同一水平聚丙烯酰胺处理相当。利用木质素类聚合物提高土壤渗透性,对减少土壤侵蚀,减轻降雨地表径流危害,具有良好的资源环保和经济意义。

Using the polymers of lignin-acrylamide to improve the soil in order to increase infiltration of rainfall and decrease runoff on storm-water was studied experimentally. The results showed that the infiltration capacity was increased by approximately 50% with polymers of lignin. The effects of the synthetic polymer of alkali lignin were the best of all the tested lignin polymers′ and semblable with the polyacrylamide＇ s in the range of 1～4 kg. hm-2. Using dose at 4 kg·hm^-2, the infiltration effect with the synthetic polymer of alkali lignin and the polyacrylamide was increased by 75% and 70%, respectively. Comparing the synthesizing conditions and material prices, the best polymers was the alkali lignin polymer. The best range of using the synthetic polymer of alkali lignin was from 2 kg·hm^-2 to 4 kg· hm^-2. Promoting the infiltration of rainfall and favorable benefit on environment and economy can be attained with the alkali lignin polymer.