PAM对土壤抗风蚀能力的影响

利用室内风洞试验装置模拟了不同地面坡度、不同地表风速、不同PAM处理的土样在净风和挟沙风作用下的风蚀情况。研究发现,PAM施用量为0.2 g/m2和6 g/m2时可分别抵御18 m/s的净风和挟沙风而使土壤不发生风蚀,施用量为0.1 g/m2时可使净风风蚀率降低90%~98%,施用量为4 g/m2且地面坡度不超过10°时可以抑制18 m/s的挟沙风而使土壤不发生风蚀,施用量为2 g/m2时可使挟沙风风蚀率降低23%~99%。

Influence of PAM to Capability of Anti-Wind Erosion of Soil

It simulates the wind erosion of soil samplers treated by different PAM with the actions of non-sand-driving wind and sand-driving wind under the conditions of different slopes and different wind speed of surface.It learns from the study that when the amount of application of PAM is 0.2 g/m~2 and 6 g/m~2 respectively,it can withstand 18 m/s non-sand-driving wind and sand-driving wind and no wind erosion happens;when the amount of application is 0.1 g/m~2,the wind erosion rate of non-sand-driving wind can be reduced by 90% ~ 98%,when the amount of application is 4 g/m~2 and surface slope smaller than 10°,it can control 18 m/s sand-driving wind and no wind erosion happens and;when the amount of application is 2 g/m~2,the wind erosion rate of sand-driving wind can be reduced by 23% ~ 99%.