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在多金属污染土壤上种植的亚麻的物理修复潜力:一个实地实验

Danai Kotoula¹, Eleni G Papazoglou¹, Garifalia Economou²

¹Laboratory of Systematic Botany, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece.

Plants (Basel, Switzerland)

|June 19, 2024

概括

纤维亚麻 (Linum usitatissimum) 显示出植物修复的潜力,在排除其他重金属的同时积累. 春季播种可以提高金属污染土壤的生长和产量.

科学领域:

环境科学环境科学
农业学是一种农业学.
生物技术是生物技术.

背景情况:

由于采矿活动导致土壤被重金属 (Cd,Ni,Cu,Pb,Zn) 污染,造成环境风险.
植物补救提供了一种可持续的方法来利用植物修复受污染的地点.
纤维亚麻 (Linum usitatissimum) 是植物修复的候选作物,因为它具有耐受性和金属吸收潜力.

研究的目的:

在现场条件下,评估纤维亚麻在多金属污染土壤中的植物修复潜力.
评估化肥和播种时间对亚麻生长,产量和金属积累的影响.
为了确定亚麻对特定重金属的生物积累和排除能力.

主要方法:

一个为期两年的实地实验 (2022-2023) 在一个受采矿影响的地点进行.
纤维亚麻 (多种类型的亚麻) 卡利斯塔) 在三种化肥水平 (0,30,60公斤N ha-1) 和两种播种时间 (春季和冬季) 下种植.
分析了植物生长参数,产量和地表生物质中的金属度,以计算金属吸收.

主要成果:

与冬季播种的亚麻相比,春季播种的亚麻表现出较短的周期,更厚的茎和更高的产量.
化肥没有显著影响植物生长或生产力.
亚麻显示的生物积累系数为1.06,表明积累,但不包括Ni,Cu,Pb和Zn.
金属吸收的顺序是 Zn > Pb > Cd > Cu > Ni.

结论:

纤维亚麻表现出对重金属污染土壤的耐受性和土壤恢复的潜力.
亚麻作为积聚剂,排除了其他测试金属 (Ni,Cu,Pb,Zn).
春季播种对于污染环境中的纤维亚麻种植更有利,优化产量和植物修复潜力.

关键词:

在Linum usitatissimum中使用最多.重金属重金属的使用.化肥化肥化肥化肥播种期间的播种期.吸收吸收吸收吸收

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