水土保持通报2012，Vol.32Issue(5)：152-155,4.
PAM与不同土壤调理剂混合施用对降雨入渗和土壤侵蚀的影响
Effects of Different PAM Application Modes Mixed with Soil Conditioners on Rainfall Infiltration and Soil Erosion
摘要
Abstract
Application of polyacrylamide(PAM) in soil can not only improve rainfall infiltration rate,but also reduce soil erosion.Usually,PAM is applied on soil surface.In order to study the effects of the mixtures of PAM with other soil conditioners on rainfall infiltration rate and soil erosion,six application treatments were evaluated by mixing PAM(22.5 kg/hm2) with superabsorbent polymers(45 kg/hm2),fly ash(1 500 kg/hm2) and humic acid(900 kg/hm2).Results showed that the application of PAM mixed with soil conditioners could significantly increase rainfall infiltration rate and reduce soil erosion.Rainfall infiltration rate was 1.8 to 2.7 times higher than the control,while soil erosion rate was reduced by about 50% to 70%.The mixture containing PAM,fly ash and humic acid had the most significant effect on the increase in infiltration rate.Mixing PAM with superabsorbent polymers led to the greatest reduction of soil erosion.Moreover,there was no significant difference when PAM was applied alone and mixed with fly ash and humic acids.Overall,the application of PAM mixed with fly ash had the best effect on the increase of rainfall infiltration and reduction of runoff.Soil erosion resistance was the best when PAM was mixed with superabsorbent polymer.关键词
入渗/侵蚀/PAM/保水剂/粉煤灰/腐殖酸Key words
infiltration/erosion/PAM/superabsorbent polymer/fly ash/humic acid分类
农业科技引用本文复制引用
于海龙,于健,李平,张俊生,李玉兰,唐德强..PAM与不同土壤调理剂混合施用对降雨入渗和土壤侵蚀的影响[J].水土保持通报,2012,32(5):152-155,4.基金项目
国家自然科学基金项目 （）
水利部推广项目 （）
内蒙古自然科学基金重点项目“PAM在农田节水中的应用” （）
