RESEARCH ARTICLE
Microbial, Urease Activities and Organic Matter Responses to Nitrogen Rate in Cultivated Soil
Sun Jingjing1, Zhu Mijia 1, Yang Xiaoqia2, Zhang Chi1, Yao Jun*, 1
Article Information
Identifiers and Pagination:
Year: 2015Volume: 9
First Page: 14
Last Page: 20
Publisher ID: TOBIOTJ-9-14
DOI: 10.2174/1874070701509010014
Article History:
Received Date: 22/07/2014Revision Received Date: 06/09/2014
Acceptance Date: 10/09/2014
Electronic publication date: 17/4/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Nitrogen (N) fertilizer is an important field management, this paper was to investigate the responses of microbial activity measured by microcalorimetric technique, urease activity and organic matter to proper nitrogen (N) fertilizer in cultivated system in the North China Plain. The microcalorimetry results showed that microorganisms under proper N fertilizer rate got the efficient metabolism. The maximum heat production (Pmax) of microcalorimetry parameter implied that increasing the N fertilizer rate, Pmax did not increase always but firstly increased than decreased. In addition, from soil urease activity and organic matter studies, high soil urease activity due to both N fertilizer rate and growth stage and these had light influence on soil organic matter. These results suggest that only proper amount of N fertilizer rate and suitable topdressing for a good wheat-growing environment.