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《Journal of Soil and Water Conservation》 2017-04
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Impacts of Polyacrylamide(PAM)on Tillage Translocation and Soil Structural Stability on Purple Soil Slope

WANG Yong;LI Fucheng;WANG Xuan;LIU Jing;YANG Wei;WANG Gang;College of Water Conservancy and Hydropower Engineering,Sichuan Agricultural University;School of Environment and Resource,Southwest University of Science and Technology;  
In order to reveal the effect of chemical measures on prevent tillage erosion of sloping fields in purple soil,the impacts of polyacrylamide(PAM)on soil structural stability and tillage translocation were studied in the plots with five slope degrees as 5°,10°,15°,20°and 25°using magnetic tracer and stimulated tillage experiments.The results indicated that:(1)Mean translocation distances of plots added PAM were significantly lower than that of CK(without PAM application),and the tillage translocation significantly decreased by 49.16% and 67.96% on 20°and 25°slope plots,respectively;(2)Compared with CK,the content of non water stable aggregate that less than 0.25 mm declined by 33.74%,46.67%,37.56%,52.70%,and 62.50% on the 5°,10°,15°,20°,and 25°slope plots added PAM,respectively.In the plots added PAM,the percentage of mean aggregate destruction(PAD)decreased by 60.05%,while mean weight diameter(MWD)and mean geometric diameter(MGD)increased by 41.94% and 55.09%,respectively,compared with CK;(3)Tillage translocation was positively linear correlated with PAD,while was negatively correlated with MWD and MGD(P0.05).These results suggested that the application of PAM could effectively reduce tillage translocation,enhance soil structure stability,and reduce soil erosion.PAM can be used to control tillage erosion on the steep slope(over 20°).
【Fund】: 四川省教育厅自然科学基金项目(17ZB0343);; 国家自然科学基金项目(41401301)
【CateGory Index】: S157.1
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【Citations】
Chinese Journal Full-text Database 10 Hits
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【Co-citations】
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10 YU Hai-long1,YU Jian2,LI Ping3,ZHANG Jun-sheng2,LI Yu-lan4,TANG De-qiang5(1.College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University, Hohhot,Inner Mongolia 010018,China;2.Inner Mongolia Academy of Water Conservancy Sciences, Hohhot,Inner Mongolia 010018,China;3.Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018,China;4.Xilin Gol League Water Survey and Design Team,Xilin Gol,Inner Mongolia 026000,China; 5.Civil Engineering Co.,Ltd.,Sixth Engineering Bureau of China Construction,Hohhot,Inner Mongolia 010040,China);Effects of Different PAM Application Modes Mixed with Soil Conditioners on Rainfall Infiltration and Soil Erosion[J];水土保持通报;2012-05
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