Types of Fertilizers and Their Application Affect the Leaching of Nitrogen and Phosphorus in Paddy Fields in Irrigation Districts of Yellow River
LIU Ruliang
WANG Fang
ZHANG Aiping
LI Youhong
CHEN Chen
HONG Yu
YANG Zhengli
Abstract：Experiments were conducted in this paper aimed to reduce the leaching of contaminants from the paddy fields in Yellow River Irrigation Districts under different fertilizations after the water receded.The results showed that compared with conventional fertilization,optimized fertilization and fertigation on "side-strip" could significantly reduce TN concentrations in the surface and receding water.Under the side-strip fertilization,the TN concentrations in the surface and the receding water were only 47.4％ and 34.3％ of those under conventional fertilization.There was no significant difference in TP concentration in the surface water and receding water between all treatments.The optimized fertilization and side-strip fertilization did not considerably reduce the rice yield after reducing the fertilizer application.Organic farming reduced the yield by 26.5％ compared with the conventional treatment.Considering yield and impact on environment,the optimized fertilization and side-strip fertilization are environmental friendly in the Yellow River Irrigation areas.
Keywords：Yellow River irrigation areaoptimization fertilizationside-strip fertilization technologynitrogen and phosphorus loss
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 46-49 )