植物生态学报 ›› 1983, Vol. 7 ›› Issue (4): 273-279.

• 论文 • 上一篇    下一篇

铅对几种作物生长的影响及其在植物体内的积累

徐和宝,汪嘉熙,谢明云   

  • 发布日期:1983-04-10
  • 通讯作者: 徐和宝

The Effects of Lead on Growth of Some Crops and Its Accumulation in Plants

Xu Hebao, Wang Jiaxi, Xie Mingyun   

  • Published:1983-04-10
  • Contact: Yang Futun

摘要: 根据将醋酸铅溶液施入土壤及喷洒叶片的盆栽试验可以确定:(1)铅对植物的毒性不大,植物对铅的忍耐力很强。目前自然界中的铅污染程度不足以直接伤害植物本身。(2)溶液中的铅可以被植物的根系吸收,也可以被叶片直接吸收。吸收量与环境中的铅浓度成正比。(3)铅在植物体中移动性很小,根吸收的铅主要积累在根部,叶片吸收的铅主要积累在叶部。有少量铅可以向上或向下转移,但极少能进入果实的内部及块根的淀粉中。

Abstract: The solution of lead acetate was applied in the soil or spread on the leaves of sweet potatoes and egg-plants grown in pots to investigate its effects, accumulation and translocation within the plants.It was shown that even though very high concentration of lead was treated either in the soil or on the foliage, no visible injury symptoms had been found. It indicated that plants were rather tolerant to lead impact. Lead acetate solution applied in the soil could be absorbed by the roots and most of the lead remained in the roots, and the solutions spread on the leaves could be absorbed by the leaves and most of the lead remained in the leaves. Only a little amounts of lead could be translocated from roots to stems and leaves or from leaves to stems, roots and nontreated leaves. Very little lead was translocated into the fruits of egg-plant and the root tubers of sweet potato especially the edible parts of them (the pulp and starch).