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[1]张汝翀 王冬梅** 张英 杜韬.煤矸石绿化基质对白三叶草生长及其抵御重金属污染影响试验研究[J].应用与环境生物学报,2018,24(04):1-11.[doi:10.3724/SP.J.1145.2017.10020]
 Zhang Ruchong,Wang Dongmei**,Zhang Ying & Du Tao.Effect of green substrates composed of coal gangue on growth of Trifolium repens L. and its resistance to heavy metals pollution[J].Chinese Journal of Applied & Environmental Biology,2018,24(04):1-11.[doi:10.3724/SP.J.1145.2017.10020]
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煤矸石绿化基质对白三叶草生长及其抵御重金属污染影响试验研究()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年04期
页码:
1-11
栏目:
研究简报
出版日期:
2018-08-25

文章信息/Info

Title:
Effect of green substrates composed of coal gangue on growth of Trifolium repens L. and its resistance to heavy metals pollution
文章编号:
201710020
作者:
张汝翀 王冬梅** 张英 杜韬
北京林业大学水土保持学院 北京 100083
Author(s):
Zhang RuchongWang Dongmei**Zhang Ying & Du Tao
Faculty of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
关键词:
煤矸石白三叶草重金属富集淋溶
Keywords:
coal waste Trifolium repens L. heavy metal accumulation leaching
DOI:
10.3724/SP.J.1145.2017.10020
摘要:
煤矸石是煤炭生产过程中产生的主要固体废弃物,因其利用率低,长期大量堆积对周围环境带来严重污染。探究以煤矸石为主要材料的优质的绿化基质对于实现煤矸石的资源化利用具有重要意义。本研究采用盆栽试验和淋溶试验,将一定量煤矸石混合不同比例的土壤、PAM、粉煤灰和玉米秸秆组成实验基质,各因素设置3水平,选用L9(34)正交表安排试验,并撒播白三叶草进行温室栽培。研究结果显示:土壤添加600g时对白三叶草生长状况影响极显著(P<0.01),但会增加Cr元素的富集和淋溶;PAM添加120mg/kg可显著增加白三叶草的株高和生物量(P<0.01),并对Cr、As元素产生明显的吸附作用;粉煤灰添加75g时能显著地促进白三叶草的出苗及生长(P<0.05),但添加150g时会对Cr、As元素的富集与淋溶有明显的促进作用;玉米秸秆添加量为25g时对白三叶草的出苗率、株高、生物量均产生促进作用(P<0.05),但对Cr、As元素的富集与淋溶基本无影响。综上,最适宜白三叶草生长且抵御重金属Cr、As污染的基质配比为:600g土壤与煤矸石混合,并添加120mg/kg PAM、75g粉煤灰与25g玉米秸秆。通过淋溶实验的检验发现所得最优基质的Cr、As元素淋溶均低于国家标准,故本研究结果可用于生产。(图1 表8 参35)
Abstract:
Objectives: Coal gangue is a main solid waste produced in the process of coal production. Because of its low utilization and large accumulation, it causes serious pollution to the environment. It is meaningful for realizing the resource utilization of coal gangue to explore a high quality greening medium with coal gangue as the main material.Methods: Pot experiment and leaching test were used in this study. A certain amount of gangue was used as the main component of the matrix, each matrix was added 3 levels of soil, polyacrylamide, fly ash and corn straw, and the L9 (34) orthogonal tab was used to arrange the test, Trifolium repens L. were planted for greenhouse cultivation. Results: The results show that adding 600g soil makes Trifolium repens L. grow best (P<0.01), but increases the accumulation and leaching of Cr; Adding 120mg/kg polyacrylamide significantly increases the height and biomass of Trifolium repens L. (P<0.01), and absorbs Cr and As; Adding 75g fly ash promotes the emergence and growth of Trifolium repens L. (P<0.05), but adding 150g fly ash significantly increases the accumulation and leaching of Cr and As; Adding 25g corn straw promotes the production of Trifolium repens L. (P<0.05), but not affects the accumulation and leaching of Cr and As. Conclusions: The optimum components of the matrix for plants growing and resisting heavy metal pollution were: 600g soil, 120mg/kg polyacrylamide, 75g fly ash and 25g corn straw. The results of leaching experiments show that the leaching of Cr and As in the optimal matrix is lower than the national standard. So the results of this experiment can be used in production.

备注/Memo

备注/Memo:
收稿日期:2017-10-18 接受日期:2017-11-21
*国家自然科学基金项目(30872075)资助
**通讯作者(E-mail: dmwang@126.com)
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更新日期/Last Update: 2017-12-06