5种抗性植物对湘潭尾矿不同改良方式的适应性研究  

Adaptation of Five Species of Resisted Vegetation to Differently Improved Models in Xiangtan Gangue

作　　者：田大伦[1] 闫文德[1] 项文化[1] 

机构地区：[1]中南林业科技大学生命科学与技术学院,湖南长沙410004

出　　处：《中南林学院学报》2006年第6期1-5,共5页Journal of Central South Forestry University

基　　金：国家科技部攻关项目(2001BA510B11-01);湖南省教育厅项目(03C612);湖南省科技厅重点项目(03NKJ1015);湖南省高等学校青年骨干教师项目资助

摘　　要：对湘潭尾矿不同处理下锰矿废弃地抗性植物生长状况、养分吸收和重金属毒害进行分析.结果表明:冬青卫矛生长最好,荷花玉兰、棕榈、海桐、小叶女贞次之;不同树苗高增长率表现出85%尾矿土+15%矿渣+复合肥处理>85%尾矿土+15%河沙+复合肥处理>100%尾矿土+复合肥处理>对照的相同规律;5种植物叶片中N的含量100%尾矿土+复合肥、85%尾矿土+15%矿渣+复合肥、85%尾矿土+15%河沙+复合肥3种处理明显高于对照,与100%尾矿土+复合肥处理相比,荷花玉兰、冬青卫矛和海桐在85%尾矿土+15%矿渣+复合肥和85%尾矿土+15%河沙+复合肥处理方式下,植物体的N含量较高;施肥降低了荷花玉兰、冬青卫矛、海桐、小叶女贞对M n的吸收;供试的5种植物对M n的富集率高于对Cd的富集率;棕榈对M n有富集作用,而对Cd表现出负富集的作用.Five kinds of resisted vegetation （Magnolia grandiflora L. , Euonymus japonicus L. , Trachycarpus fortunei H. Wendl., Ligustrum quihoui Carr. , Pittosporum tobira Ait. ） which grow naturally on the abandoned land of Xiangtan Manganese mine are chosen to be planted in pots; and then, their growth information, nutrient uptake and poisoning from heavy metals have been studied. The results show that Euonymus japonicus L. grew best, followed by Magnolia grandiflora L. , Trachycarpus fortunei H. Wendl., Pittosporum tobira Air. and Ligustrum quihoui Carr. ; that the growth rate of different species had the same trend under different treatments, namely： 85% gangue＋15% slag＋ compound fertilizer treatment〉 85% gangue＋ 15% riversand ＋ compound fertilizer treatment 〉100% gangue＋ compound fertilizer treatment 〉100% gangue treatment. Nitrogen contents in leaves of the five species under 100% gangue ＋ compound fertilizer treatment, 85% gaogue＋ 15% riversand ＋ compound fertilizer treatment and 85% gangue ＋ 150% slag ＋ compound fertilizer treatment were obviously higher than those under 100% gangue treatment. Nitrogen contents in the plant body of Magnolia grandiflora L. , Euonymus japonicus L. and Pittosporum tobira Air. under 100% gangue and 100% gangue＋ compound fertilizer treatment were relatively lower than those under 85% gangue＋ 150% riversand ＋ compound fertilizer treatment and 85% gangue＋150% slag＋ compound fertilizer treatment. We observed that Manganese absorption was influenced by fertilization; that the enrichment of Manganese was higher than that of Cadmium; and that Cadmium absorption of Trachycarpus fortunei H. Wendl. expressed negative enrichment.

关 键 词：森林生态学 矿业尾矿废弃地 施肥方式 抗性植物 

分 类 号：S718.55[农业科学—林学] X53[环境科学与工程—环境工程]