水土保持学报2017，Vol.31Issue(6)：110-115,6.DOI:10.13870/j.cnki.stbcxb.2017.06.019
保水剂施用方式对花岗岩红壤坡面水土保持的影响
Effects of Super Absorbent Polymers in Different Application Methods on Soil and Water Conservation of the Granite Slope of Red Soil
摘要
Abstract
In order to obtain the best application method of super absorbent polymers (SAP) on soil and water conservation of the granite slope of red soil,the effect of SAP (mixed,layered,and furrowed) application on the erosion process of the granite slope of red soil was compared with the method of simulated rainfall experiment and lab analysis.The results indicated that:(1) The application of SAP can reduce the runoff and sediment yield and delayed the flow time on the granite slope of red soil.The mixed application of SAP and soil had a great influence on reducing the runoff and sediment yield on the granite slope of red soil in the rain intensity of 1.0 mm/min.Compared with the control slope,the cumulative runoff respectively decreased 34％ and the cumulative sediment yield decreased 48 ％ by the mixed application of SAP and soil.While layered application of SAP and soil had extremely significant effects on the runoff and sediment yield in the rain intensity of 1.5 mm/min.Compared with the control slope,the cumulative runoff respectively decreased 46％ and the cumulative sediment yield decreased 67％ by the layered application of SAP and soil.(2) The application of SAP had increased slope infiltration rate and soil water content,and reduced the runoff and sediment yield on the granite red soil slope.The mixed application method of SAP and soil had played a good role on soil and water conservation.(3) The effects of different application methods of SAP had significant on the runoff and sediment yield on the granite slope of red soil (P＜0.05).The power function model of the cumulative runoff and cumulative sediment on the granite slope of red soil was concluded based on statistical analysis.Those results provided the theoretical basis for the runoff and sediment yield on the granite red soil slope.关键词
保水剂/花岗岩红壤/坡面产流/坡面产沙/人工模拟降雨Key words
super absorbent polymers/red soil derived from granite/slope runoff/slope sediment yield/simulated rainfall分类
农业科技引用本文复制引用
刘川,查轩,黄少燕,康佩佩,戴金梅,王丽园,白永会,张婧..保水剂施用方式对花岗岩红壤坡面水土保持的影响[J].水土保持学报,2017,31(6):110-115,6.基金项目
国家重点研发计划项目“南方红壤低山丘陵区水土流失综合治理”(2017YFC05054) （2017YFC05054）
国家科技支撑计划项目“强度侵蚀区退化生态系统修复关键技术的集成与示范”(2014BAD15B02) （2014BAD15B02）
