镉对草坪植物生长特性及生物量的影响  

The effect of cadmium on turfgrass growth characteristics and biomass

作　　者：王慧忠[1] 何翠屏[2] 赵楠 

机构地区：[1]贵州大学生物与环境科学学院环境科学系,贵州贵阳550025 [2]贵州大学,贵州贵阳550025 [3]贵州省饲草饲料工作站,贵州贵阳550000

出　　处：《草业科学》2003年第5期32-34,共3页Pratacultural Science

基　　金：贵州大学自然科学基金课题 (贵大基 [1999] 0 14号 )

摘　　要：以 2种草坪植物为试验材料 ,采用模拟试验方法 ,研究了金属镉对植物的毒害作用。结果表明 ,镉对植物根系生物量的影响相对较小 ,但对叶片生长量影响很大。镉胁迫使根系活力下降 ,当大量镉进入叶片后引起的自由基使叶绿素结构破坏 ,但叶绿素下降具有滞后性。镉造成根系表观中毒时间较早 ,表现为根冠膨大、腐烂 ,地上部分生长停滞 ,后期引起叶片失绿、枯萎死亡。镉对草坪植物生长特性及生物量的影响极大 ,在环境监测时应引起足够重视。The effect of cadmium on growth characteristics and biomass of two varieties of turfgrass was tested in this paper The results indicated that cadmium had stronger effect on leaf groeth than on root biomass, it reduced root system vigor, and destroyed chlorophyll structure after entering leaves While the reduction of chlorophyll content lagged The early symptoms of plant poisoned were swell and rot root cap, plant ceased to grow and leaves lost color, wither away till die Because of its great deleterious influence on turfgrass, Cadmium should be given more attention in environment inspection.

关 键 词：草坪植物 生长特性 生物量 金属镉 毒害作用 环境监测 重金属污染 根系 叶片 

分 类 号：X503.23[环境科学与工程—环境工程] S688.4[农业科学—观赏园艺]