|Table of Contents|

Effects of Copper Stress on Soil Nutrients，Enzyme Activities and Microorganisms in the Rhizosphere of Apple Seedlings

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2023年19
Page:
71-77
Research Field:
Publishing date:

Info

Title:
Effects of Copper Stress on Soil Nutrients，Enzyme Activities and Microorganisms in the Rhizosphere of Apple Seedlings
Author(s):
LI Furong; YIN Jiaoyang; YU Bo; HE Jiali; QIN Sijun; LYU Deguo
(College of Horticulture，Shenyang Agricultural University，Shenyang，Liaoning 110866)
Keywords:
copper; soil nutrient; enzyme activity; microorganism
PACS:
S 661.1
DOI:
10.11937/bfyy.20230188
Abstract:
Taking ‘Hanfu’‘GM256’ Malus baccata Borkh.grafted seedlings as test materials，the effects of different concentrations of copper (Cu) treatments on the soil nutrients，enzyme activities and microbial activities in the rhizosphere soil were studied,in order to provide reference for soil quality evaluation and using biological indicators to warn soil Cu pollution.The results showed that as the concentration of Cu treatment increased，the available Cu contents in the rhizosphere soil increased accordingly，but the pH value of the soil decreased.Low concentration of exogenous Cu treatments (30-200 mg·kg-1) had little effects on the content of soil organic matter (SOM) and dissolved organic carbon (DOC)，but high concentration of Cu treatments (350，500 mg·kg-1) significantly reduced the content of SOM and DOC.The content of available nitrogen，phosphorus and potassium in soil showed a similar trend to these two indexes.The activities of soil urease，dehydrogenase，and alkaline phosphatase decreased significantly with increasing concentrations of exogenous Cu treatments.The available Cu contents of soil was significantly negatively related with soil nutrients and soil enzyme activities.High concentration of Cu stress reduced the metabolic activity of the microbial community，inhibited the utilization of carbon source by soil microorganisms，destroyed the uniformity of soil microorganisms，and changed the metabolic structure of the microbial community.

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Last Update: 2023-11-29