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[1]WANG Su-ping,HUI Jian-chun,LIN Li-jin,et al.Effects of Fertilizer System on Soil Denitrification Enzyme Activity at Different Growth Stages of Maize in Hilly Regions of Middle Sichuan[J].Research of Soil and Water Conservation,2012,19(03):274-277,283.

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Effects of Fertilizer System on Soil Denitrification Enzyme Activity at Different Growth Stages of Maize in Hilly Regions of Middle Sichuan

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 03 Page number: 274-277,283 Column: Public date: 2012-06-20

Title:: Effects of Fertilizer System on Soil Denitrification Enzyme Activity at Different Growth Stages of Maize in Hilly Regions of Middle Sichuan

Author(s):: WANG Su-ping¹, HUI Jian-chun¹, LIN Li-jin², ZHU Xue-mei¹, ZHU Bo³; 1. College of Resources and Environment, Sichuan Agricultural University, Chengdu 611130, China;
2. Ya’an Soil and Water Conservation Monitoring Substation, Ya’an, Sichuan 625000, China;
3. Institute of Mountain Hazards and Environment, the Chinese Academy of Sciences, Chengdu 610041, China

Keywords:: fertilization system; nitrate reductase; nitrite reductase; hydroxylamine reductase; maize

CLC:: S154.2;S141.4

DOI:: -

Abstract:: The six kinds of fertilizer system are as follows: N (N), organic manure (OM), mixture of N, P and K (NPK), organic manure combined with N, P and K (OMNPK), and straw combined with N, P and K (RSDNPK). The fertilizer of each treatment was applied in the soil at different growth stages of maize. The experiment plots are located at the slope land of typical purple soil area in Middle Sichuan. The activities of soil nitrate reductase, nitrite reductase and hydroxylamine reductase at the jointing stage, the filling stage and the maturity stage of maize were determined. The results showed that the activities of nitrate reductase, nitrite reductase, and hydroxylamine reductase increased in the treatments of N, OM, NPK, OMNPK and RSDNPK, and the best treatments for enzymatic activity were RSDNPK and OMNPK. It suggested that RSDNPK and OMNPK could have better advantages to improve the activities of nitrate reductase, nitrite reductase and hydroxylamine reductase at the slope land of purple soil area in Middle Sichuan, and enhance the assimilation rate of N by crops.

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