期刊名称：International Journal of Multimedia and Ubiquitous Engineering
印刷版ISSN：1975-0080
出版年度：2016
卷号：11
期号：4
页码：17-26
DOI：10.14257/ijmue.2016.11.4,03
出版社：SERSC
摘要：This experiment takes phaeozem paddy field as the object of study to research for the optimum water and fertilizer application scheme for mitigation of N 2 O emissions. The effects of nitrogen, phosphorus, potassium and irrigation rate on N 2 O 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 N 2 O emissions in growing season and the increase of nitrogen showed promotion effects for N 2 O emissions; the effects of phosphorus and potassium were not obvious; the increase of irrigation promoted N 2 O emissions at an earlier stage but inhibited it latter. In consideration of yield, an optimum management plan of water and fertilizer was suggested for N 2 O reduction by 0%~20%, that was 114.72 kg/hm 2 for nitrogen, 50.25 kg/hm 2 for potassium, 17.64 kg/hm 2 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/m 2 in growing season, with an reduction rate of about 8% (compared with the control group).
关键词：water and fertilizer management; N ; 2 ; O; phaeozem; paddy
