麦糠基质草坪水土保持效果研究  

Study on the soil and water conservation effects of lawn with wheat bran matrix

作　　者：刘晖 徐涛 马力 蔡艳蓉[2] 田红卫 

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430010 [2]四川省电力设计院,四川成都610000

出　　处：《甘肃农业大学学报》2014年第2期133-138,共6页Journal of Gansu Agricultural University

基　　金："十二五"农村领域国家科技计划课题(2011BAD31B01)

摘　　要：室内人工降雨条件下,对麦糠基质草坪的产流、产沙规律进行了试验研究.结果表明:麦糠基质草坪盖度对坡面出流时间影响显著,随着麦糠基质草坪盖度的增加,坡面径流的出流时间延迟,在降雨强度为1.0mm/min,坡度5°条件下,草坪盖度由裸地增大至80%时,出流时间由4.42min变为12.88min;坡面产流量和产沙量随着麦糠草坪盖度的增大而减少,在坡度30°,降雨强度为0.5mm/min、1.0mm/min、1.5mm/min条件下,30%、55%、80%盖度的草坪的产流量与裸地相比,分别减少了30%、40%、70%以上,与裸地相比,产沙量减少均达到90%以上.研究表明,麦糠基质草坪可有效延迟产流时间,减流、减沙作用明显,具有良好的水土保持效果.By studied on the runoff and sediment yield rules of wheat bran matrix under the condition of indoor artificial rainfall,we found that the coverage of wheat bran matrix lawn had significant effects on the time of slope out flow.With the increasing of wheat bran matrix lawn coverage,the time of slope out flow was delayed,by the rainfall intensity was 1 .0 mm/min,the slope was 5°,the lawn coverage from bare land increased to 80%,the discharge time changed from 4.42 min to 12.88 min.We also found that with the in-creasing of the wheat bran matrix lawn coverage,the slope surface flow and sediment yield reduced,by the slope was 30°,the rainfall intensity was 0.5 mm/min,1.0 mm/min and 1.5 mm/min,the slope surface flow and sediment yield of the lawn coverage of 30%,55% and 80% decreased more than 30%,40% and 70%compared to the bare land.The research suggested that wheat bran matrix lawn could effectively delay the runoff time,reduce flow and sediment,it had good effects on the soil and water conservation.

关 键 词：麦糠基质 草坪水土保持 产流产沙 坡度 盖度 降雨强度 

分 类 号：S152[农业科学—土壤学]