铅对草坪植物生物量与叶绿素水平的影响  

Effect of Lead on turfgrass biomass and chlorophyll level

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6期73-75,共3页Pratacultural Science

基　　金：贵州大学自然科学基金课题(贵大基[1999]014号)

摘　　要：通过盆栽模拟试验研究了铅对植物生物量、叶片叶绿素含量变化的影响,以及植物中毒后的症状。结果表明,铅对植物根系生长发育影响极大,可使根冠细胞有丝分裂减少、根量减少。铅进入叶肉组织后导致叶片失绿,严重时使叶片枯黄死亡。试验早期植物中毒症状表现为根冠膨大变黑,严重时根系腐烂。当营养液中Pb浓度达5 0mol/m3时,试验后期引起植物死亡且不易恢复。The effect of Lead on turfgrass biomass, chlorophyll level and symptom were studied in this paper The result showed that Lead had a great influence on root growth and development, reducing cell mitosis of root cap When Lead came into mesophyll tissue, it can destroy chlorophyll and lead leaves scorch or die The early symptoms of poisoned plant were root cap swelling and root system rotting Plants were poisoned to death and could not recover when Lead concentration was 50 mol/m3

关 键 词：草坪植物 生物量 叶绿素 铅 重金属污染 根系 生长发育 中毒 症状 

分 类 号：S688.4[农业科学—观赏园艺]