水土保持研究2018，Vol.25Issue(2)：94-98,5.
丹江口库区坡耕地柑橘园套种绿肥对氮磷径流流失的影响
Effects of Green Manure Planting on Nitrogen and Phosphorus Losses Along with Runoff from Citrus Orchards on Sloping Land in the Danjiangkou Reservoir Area
摘要
Abstract
The effect of nitrogen and phosphorus runoff loss was studied in a mountainous orchard by covering planting green manure experiment in natural rainfall condition.The result showed that mountainous orchard by covering planting green manure Trifolium repens,Lolium perenne and Vicia villosa could decrease the water runoff loss by 24.7％,31.6％ and 13.9％,respectively;the amount soil erosion loss decreased by 36.4％,29.6％ and 15.7％,respectively,so covering planting green manure in the mountainous orchard was a good technology to reduce water runoff loss and soil erosion.The nitrogen and phosphorus in the runoff water were the main types of soil nutrient losses in the mountainous orchard.The total nitrogen loss decreased by 30.5％,20.6％ and 23.9％,and phosphorus loss was decreased by 52.8％,33.3％ and 42.3％,respectively,with covering planting green manure.Much more nitrogen was lost than phosphorus from mountainous orchard soil,and the soluble nitrogen accounted for much of total nitrogen loss,primarily in the nitrate form rather than the ammonium form.It was conclude that covering planting green manure was a good way to decrease the nutrient loss es along with runoff and protect the water environment,and at the same time it was beneficial for improving the fruit quality.These results suggest that covering planting green manure is effective to control agricultural non-point source pollution in the Danjiangkou Reservoir area.关键词
丹江口库区/坡耕地/绿肥/氮磷流失Key words
Danjiangkou Reservoir/slop land/green manure/nitrogen and phosphorus runoff loss分类
农业科技引用本文复制引用
李太魁,张香凝,寇长林,张玉华,马政华,段然..丹江口库区坡耕地柑橘园套种绿肥对氮磷径流流失的影响[J].水土保持研究,2018,25(2):94-98,5.基金项目
国家科技重大专项“河南丹库汇水流域水质安全保障关键技术研究与示范”(2012ZX07205-001) （2012ZX07205-001）
“十二五”国家科技支撑计划“华北集约化农区农业面源污染防控技术集成与示范”(2012BAD15B02) （2012BAD15B02）
