|Table of Contents|

Effect of Dredged Sediments Utilization in Agricultural on Seedlings of Brassica campestris L.(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年16
Page:
177-181
Research Field:
Publishing date:

Info

Title:
Effect of Dredged Sediments Utilization in Agricultural on Seedlings of Brassica campestris L.
Author(s):
YANG Dan; LIU Yan; GE Jiao
(College of Biological and Environmental Engineering，Guiyang University，Guiyang,Guizhou 550025)
Keywords:
dredged sludge; agricultural utilization; pot experiment; seedling of Brassica campestris L.; growth effects
PACS:
-
DOI:
10.11937/bfyy.201616046
Abstract:
In order to analyze the feasibility of dredged sediment utilization in improving soil fertility and plant growth，a pot experiment was conducted，in which the effect of dredged sediment addition on soil physicochemical properties and growth of Brassica campestris L.seedlings were observed.The results showed that the addition of dredged sediment had significantly increased the height，biomass，chlorophyll content in the leaf，content of C，N and P in the above-ground part of Brassica campestris L.seedlings.When the mix proportion of dredged sediment and soil reached 1∶2，the indexes were improve better than other treatments.The average height of Brassica campestris L.seedlings had increased 42.9%，the biomass increased 1.34 times，chlorophyll a and b increased 35.0% and 22.2% respectively，and concentration of C，N and P in the above-ground part increased 16.1%，1.55 times and 45.15% respectively.However，when the mix proportion reached 1∶1，the plant height，content of chlorophyll，C，N and P in the above-ground part of Brassica campestris L.seedlings began to decrease，the biomass was even less than the treatment which had no dredged sediment addition in soil.Soil Cd content had been more than the secondary standard of ‘Environmental quality standards for soils’(GB18918-2008) under this treatment.Therefore，the addition of dredged sediment could improve growth of Brassica campestris L.seedlings，but high proportion of dredged sediment utilization would cause soil contamination and stress on plant growth.The additive proportion of dredged sediment should be controlled below 50% to avoid the possible ecological risk while using its nutrients to improve soil fertility.

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Last Update: 2016-09-19