|Table of Contents|

Effects of Available Potassium on Cadmium Accumulation in Zoysia Matrella

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年17
Page:
66-74
Research Field:
Publishing date:

Info

Title:
Effects of Available Potassium on Cadmium Accumulation in Zoysia Matrella
Author(s):
CHEN Yixuan1; DENG Zhaozan2; WU Shuangjun1; YANG Yang1
(1.College of Resources and Environment,Hunan Agricultural University,Changsha,Hunan 410128;2.College of Science,Xiangzhong Normal College for Preschool Education,Shaoyang,Hunan 422000)
Keywords:
cadmium; phytoremediation; available potassium; manilagrass
PACS:
-
DOI:
10.11937/bfyy.20210493
Abstract:
Taking cadmium tolerant plants Zoysia Matrella as test material.A pot experiment was conducted to investigate the effects of soil available potassium on Cd uptake and transportation of manilagrass,and the relationship between plant height,stem node number and stem node length and other indicators,in order to povide a reference for improving the plant varieties.The results showed that there were significant differences in plant height,stem node length,stem node number leaf number leaf length and leaf width among the nine groups.The Cd concentration of the fifth group (Cd 36.11 mg·kg-1;Fv/Fm 0.712) was close to the third group (Cd 36.22 mg·kg-1;Fv/Fm 0.714) but the two groups had significant differences in plant height,stem node length,stem node number,leaf width and dry weight.There was significant difference of available potassium and urease activity between the fifth and the third groups (P<0.05);the fifth group had the lowest available potassium content;the third group had the lowest urease activity.Although the third and fifth groups had the similar total soil Cd contents,the Cd bioconcentration factors (BCF) and translocation factor (TCF) were significantly different.They were 0.96 and 0.59 or 5.07 and 0.90 respectively.Pearson correlation analysis indicated the BCF and TCF was positively correlated with available potassium and urease,negatively correlated with soil pH.The results demonstrated that soil available potassium helps to increase the accumulation and transport of Cd in manilagrass.

References:

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Last Update: 2021-12-09