RT - Journal Ty - Jour YR - 1970-01-01 JF - 当前世界环境Jo - Sp - Op - Vo - 13是 - 15 UL - www.a-i-l-s-a.com/article/279/ Do - 10.12944 / CWe.5.2。03 N2 - 镉是草本，毒药，重金属最污染的镉之一。虽然对植物的生长不是必不可少的，但它只是被根的吸收并转移到空中器官。植物中聚集的镉是人类和动物食物中毒的主要来源。镉是在地壳中发现的一个元素。纯镉是一种柔软的银金属。通常镉未发现如在环境中的游离金属，但在与其他元素，例如氧化镉，氯化镉或硫化镉和硫酸镉等硫化镉被用作塑料颜料的组合。导致环境镉污染的主要因素包括：煤炭和房屋垃圾垃圾燃烧和从地雷提取金属，导致环境中的镉增加。
house- waste and industrial waste waters introduce cadmium in potable waters, and under ground waters.
chemical fertilizers specially phosphor have sufficient amount of cadmium. Fertilizers made from phosphate minerals is also one of the source of cadmium pollution. Agricultural lands in many parts of the world are polluted by cadmium as a result of the use of phosphate fertilizers for long time. In this study the effects of cadmium chloride on a number of agricultural Brassica napus kinds is under taken, with following points. 1. Cadmium effect on sprouting in petri dishes. 2. The study of cadmium effect on the growth of Brassica napus embryo in Hogland food solution and the selection of B. napus types which are sensitive and resistant to cadmium chloride. 3. The effect of cadmium chloride is considered in respect of these aspects: Variation in amount of chlorophyll from leaves. 4. The study of role of cadmium in roots and aerial parts of the plant. 5. The study of amount of cadmium in the seeds due to green house cultivation of two sensitive and resistant varities Brassica napus kinds. ER -