水土保持学报2017，Vol.31Issue(5)：14-18,24,6.DOI:10.13870/j.cnki.stbcxb.2017.05.003
植物篱对石灰土坡耕地理化性质及磷素流失的影响
Effects of Hedgerows on Physical and Chemical Properties and Phosphorus Loss in the Lime Soil Slope Farmland
摘要
Abstract
The standard runoff plots with hedgerows of gardenia (shrubs) and ryegrass (herbaceous) were set up to study the effects of different hedgerows on soil physicochemical properties and on the characteristics of phosphorus loss in the typical lime soil slope farmland in Xiangxi River Basin of Three Gorges Reservoir are-a.Results showed that the hedgerows system could effectively increase the fine particles content in soil and reduce bulk density,so as to improve soil fractal characteristics.It could also enhance soil dredging and water content,and finally increase the soil corrosion resistance index Prevention and control soil nutrient loss.The effects of two hedgerows on soil physicochemical properties and phosphorus loss varied in different soil depths and different intercropping zones in the lime soil slope farmland,but the effects were not significant.The contents of Ca8-P,Al-P,Fe-P,O-P and Ca10-P in soil were significantly correlated with soil clay contents (r =0.772,0.805,0.683,0.682,0.738).There was a significant negative correlation between soil bulk density and clay contents (r =-0.648),indicating that the hedgerows system could reduce soil bulk density and phosphorus loss through effectively blocking and enriching soil clay particles,to achieve the improvement of soil physicochemical properties and controlling of agricultural non-point source pollution in lime soil slope farmland.关键词
香溪河/石灰土/植物篱/磷素流失/土壤理化性质Key words
Xiangxi River/lime soil/hedgerows/phosphorus loss/soil physical and chemical properties分类
农业科技引用本文复制引用
李波,李晔,赵绍林,肖华锋,李豪瑞..植物篱对石灰土坡耕地理化性质及磷素流失的影响[J].水土保持学报,2017,31(5):14-18,24,6.基金项目
国家水体污染控制与治理科技重大专项(2012ZX07104-002) （2012ZX07104-002）
