Evaluation of nitrogen loss way in summer maize system under different fertilizer N managements

Li Lin, Ke Lin Hu, Guang De Li, Huan Yuan Wang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The objective of this study was to investigate nitrogen (N) loss from soil-crop systems under different fertilizer N managements, and to provide some suggestions on optimizing fertilizer management practices. The experiment was carried in high yield production area of Huantai county in Shandong province in 2009.Four kinds of fertilizer N application practices were designed, including CK, farmer practice (FP), optimizing fertilizer application (OPT) and controlled release fertilizer (CRT) for studying the fate of N during the maize growth season in 2009.The water and nitrogen management model (WNMM) was used to simulate the dynamics of soil water and N fate. The results indicated that the ratio of nitrate leaching and NH 3 volatilization accounting of fertilizer N ranged from 6% to 18% and 5% to 34%, and their means were 12.7% and 20.7%, respectively. The amount of N leaching under OPT was 14.5 kg·hm -2, was the lowest in all treatments. The amount of NH 3 volatilization under CRT was 7.6 kg·hm -2, respectively, was the lowest in all treatments. The order of total N loss under four treatments followed as: FP > OPT >CRF≈CK. Both OPT and CRT treatments are the best management practices considering their high grain yield, water and nitrogen use efficiencies, and environmental protection.

Original languageEnglish (US)
Pages (from-to)2617-2624
Number of pages8
JournalHuanjing Kexue/Environmental Science
Volume32
Issue number9
StatePublished - Sep 1 2011

Keywords

  • Different fertilizer treatments
  • Gaseous emission
  • Nitrate leaching
  • Summer maize
  • Water and nitrogen management model

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