摘要
聚丙烯酰胺(PAM)作为一种土壤结构改良剂在我国正处于试验应用阶段。为了更好地了解其作用效果,掌握其作用机理,探求其使用方法,通过试验,分别对施用不同浓度比例PAM的试验土壤的积水入渗情况、饱和导水率值、保水情况、土壤容重进行了测定。结果发现,各种处理土样与对照相比,①积水入渗速率和饱和导水率值都有所降低。②各处理土样的蓄水能力增强,保水能力未见提高。③土壤容重有一定程度的降低。④以上各种趋势随PAM施用量的增大而增强。
As a new type of soil structure-improved additive, Polyacrylamide（PAM） is still at the stage of experimental application in China. To farther exert it ＇s function and master it＇s working principle, experiments has been done. The measurement of ponded water infiltration, saturated hydraulic conductivity, water holding capacity, soil bulk density of different treatments of PAM show, ①the velocity of ponded water infiltration and saturated hydraulic conductivity are both reduced;②water holding capacity is improved but water retention capacity is seem to the control; ③soil bulk density is reduced compared with the control;④the result above is more notable with the higher amount of PAM applied in the soil.
出处
《灌溉排水学报》
CSCD
北大核心
2006年第4期56-58,63,共4页
Journal of Irrigation and Drainage
基金
京津风沙源治理项目
内蒙古克什克腾旗科技支撑专项基金
关键词
PAM
入渗
饱和导水率
保水能力
土壤容重
PAM
infiltration
saturated hydraulic conductivity
water retention capacity
soil bulk density
