Effects of Dairy Wastewater Irrigation on Migration of Soil Available Nitrogen
Abstract：This essay studied migration of soil available nitrogen when irrigating winter wheat with the dairy farm wastewater.The results indicated that the two and three dairy wastewater irrigation in the winter wheat growing period were superior irrigation modes and wound not cause the accumulation of soil nitrate and ammonium nitrogen after the winter wheat harvest.In the winter wheat growing period,the soil nitrate nitrogen concentration was generally "dumbbell" shape and the soil ammonium nitrogen concentration decreased by soil depth increasing in the 1 m soil profile.Comparing irrigation treatments with dairy farm wastewater with the controlled treatment,the under layer soil nitrate nitrogen concentration was lower,which showed that the leaching and infiltration of soil nitrate nitrogen was low-intensity;Because of the high ammonium nitrogen concentration in the dairy wastewater,the soil ammonium nitrogen concentration of irrigation treatments with dairy farm wastewater was generally higher than that of the controlled treatment.
Keywords：dairy wastewaterirrigationwinter wheatnitrate nitrogenammonium nitrogen
Publication Date：2012-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 21-25 )