水土保持学报2017，Vol.31Issue(3)：22-26,5.DOI:10.13870/j.cnki.stbcxb.2017.03.004
不同覆盖措施对褐土养分流失的影响
Effects of Different Mulching Methods on Soil Nutrient Loss in Cinnamon Soil
摘要
Abstract
To study the effects of different mulching methods on soil nutrient loss and soil particle size distribution,we simulated different rainfall intensities (30 mm/h,and 60 mm/h) and different mulching methods (litter,gravel) by an artificially simulated rainfall experimental system.The results showed that:(1) Both litter cover and gravel cover could reduce soil erosion effectively.A 250 g/m21itter cover and a 50％ gravel cover could reduce soil erosion by 91％-98％ and 68％-91％,respectively.(2) The concentration of organic matter,available nitrogen,and available phosphorus did not change with the variation of coverage,but the concentration of available potassium was increased to 144％-325％ of that of the control group.(3) The total nutrient loss decreased with the increase of coverage.A 250 g/m21itter cover and a 50％ gravel cover could reduce the nutrient loss by 64％-96％ and 43 ％94％,respectively.(4) The particle size of the eroded soil was significantly smaller than that of the soil before erosion,and the larger the erosion modulus,the closer the soil particle size was to the undisturbed soil.关键词
土壤侵蚀/土壤养分流失/覆盖措施/模拟降雨Key words
soil erosion/soil nutrient loss/mulching method/simulated rainfall分类
农业科技引用本文复制引用
李瀚之,余新晓,樊登星,孙佳美,常玉,梁洪儒..不同覆盖措施对褐土养分流失的影响[J].水土保持学报,2017,31(3):22-26,5.基金项目
国家重点研发计划项目(2016YFC0500802) （2016YFC0500802）
国家自然科学基金项目(41401013) （41401013）
科技创新服务能力建设-协同创新中心-林果业生态环境功能提升协同创新中心(2011协同创新中心,市级,PXM2016_014207_000038) （2011协同创新中心,市级,PXM2016_014207_000038）
