|Table of Contents|

Effect of Dicyandiamide on Urea Transformation and Soil Enzyme Activities Under Cadmium Interaction Nitrogen in Brassia chinensis Field(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年18
Page:
180-184
Research Field:
Publishing date:

Info

Title:
Effect of Dicyandiamide on Urea Transformation and Soil Enzyme Activities Under Cadmium Interaction Nitrogen in Brassia chinensis Field
Author(s):
LI Suxia; ZHANG Jihong; MO Xiaorong
(College of Resources and Enviroment，Qinzhou University，Qinzhou，Guangxi 535000)
Keywords:
dicyandiamide(DCD); nitrogen; cadmium; soil enzyme activity; Brassia chinensis field
PACS:
-
DOI:
10.11937/bfyy.201618045
Abstract:
‘Shanghai Green’ Chinese cabbage was used as test material，using pot experiment,the effect of addition of nitrification inhibitor DCD (for pure nitrogen 5%，10%，20%;named treatment 1,2,3,respectively) on pakchoi soil NH4+-N and NO3--N and available cadmium transformation and soil enzyme activity under nitrogen (02 g?kg-1 soil) Cd (20 mg?kg-1 soil) interaction conditions were studied.The results showed that within the test range，adding DCD could significantly reduce soil NO-3-N accumulation amount and decreased 4223% and 9845%，respectively，DCD was applied to an amount of 20% pure nitrogen in the soil NO-3-N was not detected；and dicyandiamide was applied to the amount of the conversion of the amount of NH4+-N，NO-3-N amount of conversion into a very significant positive correlation and negative correlation coefficients were 0998,0993.At the same time，could significantly affect soil urease activity，protease activity，invertase activity，acid phosphatase activity and soil available Cd conversion，and between the enzyme activity and soil available Cd urease significantly，the correlation coefficient of 0999 and soil protease activity，invertase activity，and soil acid phosphatase activity in varying degrees of change under different treatment compared with the control，treatment and treatment 1,3 significantly increased soil protease and invertase activity，three treatments significantly increased acid phosphatase activity.The results showed that the interactive effects of nitrogen application and cadmium，add dicyandiamide could significantly reduce soil NO-3-N accumulation and significantly improve the soil enzyme activity and could be used as a test range in vegetable soil system improvement and effective.

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Last Update: 2016-11-01