Prediction of P concentrations in soil leachates: Results from 6 long term field trials on soils with a high P load

详细信息    查看全文

• 作者：T. Vanden Nest^a ; ^{thijs.vandennest@ilvo.vlaanderen.be} ; B. Vandecasteele^a ; ^{Bart.vandecasteele@ilvo.vlaanderen.be} ; G. Ruysschaert^a ; ^{greet.ruysschaert@ilvo.vlaanderen.be} ; R. Merckx^b ; ^{roel.merckx@ees.kuleuven.be}
• 关键词：P leaching ; 0.01  ; M CaCl2 extractable P (P-CaCl2) ; Hot water extractable P (HWP) ; Ammonium lactate extractable P (P-AL) ; Prediction models
• 刊名：Agriculture, Ecosystems & Environment
• 出版年：2017
• 出版时间：16 January 2017
• 年：2017
• 卷：237
• 期：Complete
• 页码：55-65
• 全文大小：1224 K
• 卷排序：237

文摘

Model was calibrated based on 5 field trials, and validated on sixth field trial. P leaching is not determined by soil P quantity (P-AL) alone. P-CaCl2 and HWP allow to differentiate between soils for TP leaching (concentrations). P fertilization should be restricted based on both soil P capacity and P intensity. P intensity should be used for targeted selection of fields with high leaching risk.