黄花月见草最适生长密度及其对铜铅锌污染土壤的适应性研究
时间:2019-04-27 11:08 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：土壤重金属污染问题日益严重，铜、铅、锌污染土壤的修复已成为近年研究热点。本文通过研究黄花月见草的最适种植密度及其铜铅锌污染土壤中的生长状况研究，研究黄花月见草的田间最适种植密度以及植株对铜铅锌三种重金属的耐性情况，以期在植物修复重金属污染土壤的研究方面有更进一步的指导作用。研究表明，适合黄花月见草植株生长的种植间距为0.5 m~1 m。从黄花月见草植株生长方面和产量方面综合考虑，种植密度可选择每亩3500株左右。黄花月见草体内铜铅锌含量的分布规律为地下部>地上部>种子；黄花月见草对铜的转运能力与土壤铜含量在一定程度上成正比，铜含量过高后黄花月见草的铜转运系数有所下降；黄花月见草地下部向地上部及种子的铅锌转运能力较弱；黄花月见草种子中的重金属含量都很低，均在10~30mg/kg范围内，说明黄花月见草对于铜铅锌有一定的吸收能力，同时种子中的重金属含量较低，可作为治理铜铅锌污染的修复植物以及安全的经济作物进行栽培。34928 毕业论文关键词：黄花月见草；重金属污染；种植密度；铜铅锌；重金属耐性 Study on the optimum growth density of Oenothera glazioviana and its adaptability to copper, lead and zinc contaminated soil Abstract：Soil heavy metal pollution problem is increasingly serious, copper, lead, zinc pollution soil remediation has become a hot topic in recent years. In this paper, the optimum planting density and the growth status of Cu, Pb and Zn polluted soils were studied by studying the optimum planting density of Osmanthus hibiscus and the resistance of three heavy metals in copper, lead and zinc. And has a further guiding role in the study of plant remediation of heavy metal contaminated soil. The results showed that the planting distance of the plants was 0.5 m ~ 1 m. From the growth and development of the plants, the planting density can be chosen to be about 3500 per acre. The distribution of copper, lead and zinc in the grass of the herbaceous plants was above that in the shoots> aboveground> seeds. The transport capacity of copper on the copper was proportional to the copper content in the soil, and the copper content was too high. Of the copper transport coefficient decreased; the northern part of the grass to see the grass to the ground and the seeds of lead and zinc transport capacity is weak; yellow grass grape seed in the heavy metal content is very low, both in the range of 10 ~ 30mg / kg, The herb has a certain absorption capacity for copper, lead and zinc, and the content of heavy metals in the seeds is low, which can be used as a repair plant for the treatment of copper, lead and zinc pollution and safe economic crops. Key words: Oenothera glazioviana ; Heavy metal pollution; Planting density; Copper lead and zinc; heavy metal resistance 目 录 摘要： 3 关键词： 3 Abstract： 3 Key words: 3 引言 3 1 材料与方法 5 1.1 黄花月见草最适种植密度研究 5 1.2 黄花月见草对铜铅锌污染土壤的适应性研究 5 1.3 数据处理 6 2 结果与分析 6 2.1黄花月见草最适种植密度研究结果 6 2.2黄花月见草对铜铅锌污染土壤的适应性研究结果 7 2.2.1黄花月见草对铜污染土壤的适应性研究结果 7 2.2.2黄花月见草对铅锌污染土壤的适应性研究结果 8 3 讨论 10 致谢： 10 参考文献： 10 黄花月见草最适生长密度及其对铜铅锌污染土壤的适应性研究 (责任编辑：qin) |