ABSTRACT

Copper (Cu) is an essential micronutrient that both deficient and excess concentration of this element can cause damages to plants. A greenhouse trial was conducted to investigate the effectiveness of brown coal application and magnetization of Cu-contaminated irrigation water on dry matter yield and Cu distribution in maize tissues. The greenhouse pot experiment was a factorial trial arranged in a completely randomized design with three replicates. The results obtained showed that water contaminated with Cu-sulfate or nitrate significantly increased mean shoot dry matter by 1.27 and 1.21 times, as compared to that of control (distilled water). Magnetized water (MW) increased Cu concentration in plant tissues, decreased yield biomass, translocation factor (TF), translocation efficiency (TE) and caused illusive increase in phytoextraction efficiency (PE) of Cu-sulfate. Brown coal had no significant effects on shoot Cu concentration but significantly decreased root Cu concentration. As well as it increased TF; due to the decreases of root Cu concentration, and not to the increases of shoot Cu concentration. According to the results, gradual application of Cu via irrigation of maize with Cu contaminated water resulted in an increase in maize biomass. However, magnetization not only did not improve maize growth but also had a detrimental effect on growth parameters.

摘要

铜 (Cu) 是一种必需的微量营养素，该元素的缺乏和浓度过高都会对植物造成损害。进行了一项温室试验，以研究施用褐煤和磁化受铜污染的灌溉水对玉米组织中的干物质产量和铜分布的有效性。温室盆栽试验是一​​个完全随机设计的析因试验，有 3 个重复。获得的结果表明，与对照（蒸馏水）相比，被硫酸铜或硝酸盐污染的水使平均地上部干物质显着增加了 1.27 和 1.21 倍。磁化水 (MW) 增加植物组织中的 Cu 浓度，降低产量生物量，易位因子 (TF)，易位效率 (TE) 并导致硫酸铜的植物提取效率 (PE) 虚增。褐煤对地上部铜浓度无显着影响，但显着降低根系铜浓度。以及它增加了TF; 由于根部铜浓度的降低，而不是地上部铜浓度的增加。根据结果​​，通过用受铜污染的水灌溉玉米来逐步施用铜导致玉米生物量增加。然而，磁化不仅不能改善玉米的生长，而且对生长参数也有不利影响。而不是随着枝条铜浓度的增加。根据结果​​，通过用受铜污染的水灌溉玉米来逐步施用铜导致玉米生物量增加。然而，磁化不仅不能改善玉米的生长，而且对生长参数也有不利影响。而不是随着枝条铜浓度的增加。根据结果​​，通过用受铜污染的水灌溉玉米来逐步施用铜导致玉米生物量增加。然而，磁化不仅不能改善玉米的生长，而且对生长参数也有不利影响。