Earticle

초록

영어

This experiment takes phaeozem paddy field as the object of study to research for the optimum water and fertilizer application scheme for mitigation of N2O emissions. The effects of nitrogen, phosphorus, potassium and irrigation rate on N2O emissions in growing season under controlled irrigation was analyzed by four-factor quadratic saturation D-optimum design scheme, using the method of static chamber-gas chromatographic techniques. The results showed that nitrogen had most significant effects for N2O emissions in growing season and the increase of nitrogen showed promotion effects for N2O emissions; the effects of phosphorus and potassium were not obvious; the increase of irrigation promoted N2O emissions at an earlier stage but inhibited it latter. In consideration of yield, an optimum management plan of water and fertilizer was suggested for N2O reduction by 0%~20%, that was 114.72 kg/hm2 for nitrogen, 50.25 kg/hm2 for potassium, 17.64 kg/hm2 for phosphorus, 80% for relative soil water content at late tilling stage. Under this scheme, the yield was 79.23 g/pot, with an increase rate of about 19.6% (compared with the control group); the emission load was 0.095 g/m2 in growing season, with an reduction rate of about 8% (compared with the control group).

목차

Abstract
 1. Introduction
 2. Materials and Methods
  2.1 General Information on the Experimental Field
  2.2. Test Design
  2.3. Experiment Indexes and Methods
  2.4. Calculation Methods and Data Analysis
 3. Results and Analysis
  3.1. Effect Function of N2O Emissions in Growing Season
 4. Discussion
 5. Conclusions
 Acknowledgment
 References

키워드

저자

• Dan Xu [ School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China ]
• Zhongxue Zhang [ School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China ] Corresponding author
• Yanyu Lin [ School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Multimedia and Ubiquitous Engineering

• 간기

  월간

• pISSN

  1975-0080

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605