[1]周燕,吕惠飞,高海力,等.镉和模拟酸雨胁迫对桑幼苗根系特性的影响[J].浙江林业科技,2022,42(03):42-48.[doi:10.3969/j.issn.1001-3776.2022.03.006]
 ZHOU Yan,LU Hui-fei,GAO Hai-li,et al.Stress of Simulated Acid Rain on Root Properties of Morus alba var. Nongsang 14 in Cadmium Contaminated Soil[J].Journal of Zhejiang Forestry Science and Technology,2022,42(03):42-48.[doi:10.3969/j.issn.1001-3776.2022.03.006]
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镉和模拟酸雨胁迫对桑幼苗根系特性的影响()
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《浙江林业科技》[ISSN:1001-3776/CN:33-1112/S]

卷:
42
期数:
2022年03期
页码:
42-48
栏目:
出版日期:
2022-05-15

文章信息/Info

Title:
Stress of Simulated Acid Rain on Root Properties of Morus alba var. Nongsang 14 in Cadmium Contaminated Soil
文章编号:
1001-3776(2022)03-0042-07
作者:
周燕 1吕惠飞1高海力2鲍跃群1王金忠1
(1. 建德市林业总场,浙江建德 311600;2. 浙江省公益林和国有林场管理总站,浙江杭州 310016)
Author(s):
ZHOU Yan1LU Hui-fei1GAO Hai-li2 BAO Yue-qun1WANG Jin-zhong1
(1. Jiande Forest Farm of Zhejiang, Jiande 311600, China; 2. Zhejiang Ecological Forest and State Forest Farm Administration, Hangzhou 310016, China)
关键词:
酸雨根系表型养分元素
Keywords:
Morus alba acid rain cadmium root phenotype nutrient
分类号:
Q945.78
DOI:
10.3969/j.issn.1001-3776.2022.03.006
文献标志码:
A
摘要:
土壤镉(Cd)污染和酸雨(AR)是全球性的环境问题,研究酸雨对木本植物Cd 污染修复的影响具有重要 意义。本研究采用盆栽法研究了模拟酸雨对Cd 污染条件下桑Morus alba 幼苗根系表型、活力和元素含量的影响。 结果表明:低浓度Cd(25 mg·kg-1)处理下,桑的根系表型指标和生物量积累下降,但是地上部分生长没有显著 变化,高浓度Cd(50 mg·kg-1)处理下,这些指标均显著低于对照(CK);轻度酸雨(pH4.5)处理对各指标影 响不显著,但是重度酸雨(pH3.0)处理显著降低了这些指标以及根系Mg、Fe 含量。酸雨和Cd 交互作用显著, 轻度酸雨使得低浓度Cd 处理下的株高、根系表型、根系活力以及根系Mg、Fe 含量显著低于相同Cd 浓度的无酸 处理(pH7.0),而根系Cd 含量显著升高。说明桑对轻度酸雨和低浓度Cd 有一定的耐受性,但是酸雨会降低桑 对Cd 的耐受性,可能的原因是酸雨对桑生长不仅产生了直接伤害,而且导致桑根系吸收和积累了更多的Cd。
Abstract:
In the spring 2019, cuttings of Morus alba var. Nongsang 14 were potted in Cadmium contaminated soil in Lin’an, Zhejiang province. 60 days of recovering later, experiment of two factors (simulated acid rain, cadmium contaminated soil) with 3 levels were conducted on seedlings. By the end of September, determinations were implemented on seedling height, ground diameter, root system indicators. The results showed that root phenotype and biomass accumulation of M. alba var. Nongsang 14 seedlings decreased under 25 mg/kg of Cd, but the growth of aboveground part did not change significantly. Under treatment of 50 mg/kg of Cd, these tested indicators were significantly lower than that of the control (0 mg/kg of Cd & pH7.0). Treatments with pH 4.5 had no significant effect on these indicators, but that with pH 3.0 significantly reduced, as well as Mg and Fe contents in roots. The interaction between treatment of AR and Cd was significant. Compared to those under low concentration of Cd without AR (pH 7.0) treatment, plant height, root phenotype, root activity and root Mg and Fe contents under low concentration Cd with AR (pH4.5) treatment were significantly lower, and root Cd content was significantly higher.

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备注/Memo

备注/Memo:
收稿日期:2021-11-25;修回日期:2022-03-24
作者简介:周燕,工程师,从事森林资源经营管理工作;E-mail:124276107@qq.com。通信作者:高海力,工程师,从事森林资源监测管理、 林业信息化工作;E-mail:285339380@qq.com。
更新日期/Last Update: 2022-05-15