粪肥对不同磷水平土壤磷流失潜力的影响  

Effects of Organic Manure Application on P Runoff from Soils with Different P Levels

作　　者：周翠[1] 章明奎[1] 方利平[1] 

机构地区：[1]浙江大学环境与资源学院资源科学系,浙江杭州310029

出　　处：《土壤通报》2006年第4期706-709,共4页Chinese Journal of Soil Science

基　　金：浙江省科技计划项目(编号2004C33061)

摘　　要：田间试验结果表明,因施肥方式不同,粪肥施用对不同磷水平土壤磷流失潜力的影响也不相同。在施用的粪肥与表土混合的情况下,粪肥对土壤磷流失的增加量随土壤磷水平的提高而升高。但当粪肥表施不与土壤混合时,情况有所不同。在粪肥表施初期,无论是高磷土壤还是低磷土壤,地表径流中磷浓度都达到较高水平,施肥引起的土壤磷流失的增加量以低磷土壤更为明显。但粪肥表施较长时间后,粪肥对土壤磷流失的增加量也随土壤磷水平的提高而升高。总的来说,控制地表径流磷流失的效果是粪肥与土混施优于表施,流域内粪肥处置应优先施于土壤磷水平较低的土壤中。The effects of organic maunre application on P runoff from soils on different P levels varied with application methods . The elevated amounts of soil P runoff induced by organic manure application increased with increasing soil P level when organic manure was mixed with surface soils. The effects were different when the organic manure was applied on the field without mixed with soils. In the latter case, P concentration in the initial runoff water was very high for all soils, and the elevated amounts of soil P runoff from organic manure application were more significant in low P soils than those in high P soils. However, P concentration in the runoff water coflected four months later after the application decreased significantly, and the elevated amounts of soil P runoff from organic manure application increased with increasing soil P level. The results suggested that mixture application of organic manure with soils was more efficient for controlling P runoff loss than direct surface application, and organic manure should be preferentially applied to lower P soils.

关 键 词：粪肥 磷积累 磷流失 土壤 

分 类 号：S157.41[农业科学—土壤学]