好气厌气培养下碳源及C／N对土壤供氮特性的影响  

EFFECT OF CARBON AND C/N ON THE CHARACTERISTICS OF SOIL NITROGEN SUPPLY UNDER AEROBIC AND ANAEROBIC INCUBATION

作　　者：刘兆普[1,2,3] 高祖民[1,2,3] 史瑞和[1,2,3] 戴志新[1,2,3] 封克[1,2,3] 

机构地区：[1]南京农业大学生产开发处 [2]江苏省农林厅土肥站 [3]扬州大学农学院

出　　处：《南京农业大学学报》1996年第3期70-74,共5页Journal of Nanjing Agricultural University

摘　　要：研究了添加化学氮肥、稻秸和淀粉的土壤在好气、厌气培养下的供氮特征。（１）单施化学氮肥好气培养，土壤中矿物态氮含量始终高于厌气培养；单施稻秸厌气培养，土壤中矿物态氮含量高于好气培养。（２）培养６０ｄ时，Ｃ／Ｎ为１０的处理好气培养，土壤中矿物态氮含量高于厌气培养；Ｃ／Ｎ＞２０的处理厌气培养，土中矿物态氮含量处于较高水平。（３）添加淀粉使好气培养土壤中矿物态氮含量大幅度减少，厌气培养则变化不大，Ｃ／Ｎ相同的处理，好气培养下添加淀粉的土壤中矿物态氮的减少量为厌气状态下的１．８倍。The paper dealt with the nitrogen supply characteristics of soil with the addition of chemical N fertilizer, rice straw and starch alone and their combinations under aerobic and anaerobic incubation. The results obtained were as follows: (1) The contents of mineral N under anaerobic incubation were lower than those under aerobic incubation in the whole periods of incubation in the treatment of single addition of chemical N fertilizer, but the reverse was true in the treatment of single addition of rice straw. (2)The contents of mineral N under aerobic incubation were higher than those under anaerobic incubation at the time of incubation of 60 days when the C/N of the material was 10. However the contents of mineral N under anaerobic incubation increased gradually when the C/N increased from 20 to 80. (3) Addition of starch made the contents of soil mineral N be decreased greatly under aerobic incubation while the contents of soil mineral N under anaerobic incubation changed little even if there was an addition of the same amount of starch. Thus, the mineral N under aerobic incubation decreased 1.8 times than that under anaerobic incubation with the same C/N.

关 键 词：碳源 C/N 好气 厌气 土壤供氮 

分 类 号：S158.5[农业科学—土壤学]