[1]沈其荣,史瑞和.土壤预处理对不同起源氮矿化的影响[J].南京农业大学学报,1991,14(01):54-58.[doi:10.7685/j.issn.1000-2030.1991.01.011]
 Sheng Qirong,Shi Ruihe.THE EFFECT OF SOIL PRETREATMENT ON THE MINERALIZATION OF NITROGEN DEPRIVED FROM DIFFERENT FORMS[J].Journal of Nanjing Agricultural University,1991,14(01):54-58.[doi:10.7685/j.issn.1000-2030.1991.01.011]
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土壤预处理对不同起源氮矿化的影响()
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《南京农业大学学报》[ISSN:1000-2030/CN:32-1148/S]

卷:
14卷
期数:
1991年01期
页码:
54-58
栏目:
出版日期:
1991-02-28

文章信息/Info

Title:
THE EFFECT OF SOIL PRETREATMENT ON THE MINERALIZATION OF NITROGEN DEPRIVED FROM DIFFERENT FORMS
作者:
沈其荣史瑞和
南京农业大学土壤农业化学系
Author(s):
Sheng QirongShi Ruihe
Department of Soil Science and Agro-chemistry
关键词:
土壤 矿化 固定 生物态氮 土壤预处理
Keywords:
soil nitrogen mineralization immobilization nitrogen in biomass soil pretreatment
分类号:
S158.3
DOI:
10.7685/j.issn.1000-2030.1991.01.011
文献标志码:
A
摘要:
本文研究了化肥起源氮及土壤固有氮在土壤中的转化过程以及风干、灭菌处理对土壤氮矿化的影响。结果指出:土壤一开始强烈固定的无机氮中,有91.50%是被固定在土壤微生物体内,土壤生物氮的净增量中,平均有90.71%来自所施标记硫铵(^{15}N),而来自原有土壤的矿化氮不足10%;风干对土壤氮矿化的影响很大,对于风干土可通过预培养10天来消除风干效应;风干对不同来源的有机氮的矿化影响是不同的,风干对新固定态氮的影响远大于土壤固有态氮;由于干土效应而引起的土壤有机氮易分解的部分绝大多数是微生物体内物质。
Abstract:
This paper deals with the turnover of nitrogen deprived from the newly fixed fertilizer nitrogen and the native humus nitrogen in soil, and the effect of soil pretreatment e.g.drying and sterilizing, on nitrogen mineralization. The results obtained were presented as follows: 1. 91.50% of fixed nitrogen in soil could be accounted for in soil biomass, and 90.71% of net increase of biomass nitrogen was traced from ammounium sulphate added while the amount of nitrogen deprived from native humus was only 10%. 2. Drying the soil could accelerate nitrogen mineralization and the drying effect could be eliminated by pre-incubating the soil for 10 days. Drying effect was much greater on the newly fixed nitrogen mainly in soil biomass than on the native humus nitrogen.

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更新日期/Last Update: 1991-02-28