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Effectiveness and Durability of Polyacrylamide (PAM) and Polysaccharide (Jag C 162) in Reducing Soil Erosion under Simulated Rainfalls

机译：聚丙烯酰胺（PAM）和多糖（JAG C 162）在模拟降雨下减少土壤侵蚀中的有效性及耐久性

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摘要

Polymers as a soil amendment is one of the effective measurements to reduce soil erosion. In this study, two polymers, polyacrylamide (PAM) and polysaccharide (Jag C 162), were applied to erosion plots filled with loess soil (tilted at 20°). For each polymer, four concentration levels—0, 10, 30, and 50 kg·ha−1—were applied. The treated erosion plots were then subjected to two simulated rainfall events (dry and wet run) to investigate their effectiveness and durability in controlling soil erosion. Both simulated rainfall events were at an intensity of 120 mm·h−1, and each event lasted for 30 min with 24 h free drainage in between. Results show that both polymers could reduce runoff, effectively control sheet erosion, and promote soil aggregates due to their capability to bind and stabilize soil particles. Such reducing effects were more pronounced on the Jag C 162-treated plots than on the PAM-treated plots. However, during the second (wet) run, there was more reduction of aggregate with size of >0.25 mm and greater increment of soil loss on the Jag C 162-treated plots than on the PAM-treated plots.
机译：聚合物作为土壤修正是减少土壤侵蚀的有效测量之一。在该研究中，将两种聚合物，聚丙烯酰胺（PAM）和多糖（JAG C 162）应用于填充有黄土土壤的腐蚀图（在20°处倾斜）。对于每种聚合物，施加四种浓度-0,10,30和50kg·HA-1--〜1-1-〜1m-1。然后对处理的腐蚀地块进行两次模拟降雨事件（干湿，湿润），以研究控制土壤侵蚀方面的有效性和耐用性。两种模拟的降雨事件都处于120 mm·H-1的强度，每个事件持续30分钟，两者之间的自由排水24小时。结果表明，两种聚合物都可以减少径流，有效地控制片侵蚀，并由于其染色和稳定土壤颗粒的能力而促进土壤聚集体。在JAG C 162处理的地块上比在PAM处理的地块上更加明显，这种降低效果比在PAM处理的图中更为明显。然而，在第二（湿）运行期间，轴承尺寸的尺寸更加减少> 0.25mm，jag C 162处理的地块上的土壤损失更大，而不是PAM处理的图。

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