摘要
研究铬单一污染和铬+铅、铬+镉复合污染对水培水稻幼苗生长的影响及镧对重金属污染的作用。结果表明:低浓度的铬浸种可促进水稻的生长,当铬浓度达到8mg/L时严重抑制水稻生长。镉明显增强铬对水稻生长的毒害作用,而铬与铅复合污染对水稻的伤害则由于二者的相互反应轻于单一污染。250mg/L三氯化镧能够缓解较高浓度重金属污染造成的伤害,促进水稻幼苗的正常生长。
The effects of Cr and and the effects of La on pollution trations of Cr can accelerate the the complex effects of Cr/Pb or Cr/Cd on the growth of rice seedling were discussed. The results showed that soaking seeds in low concengrowth of rice seedling, but higher concentrations of Cr inhibit the growth seriously. Cd significantly increases the hazard of Cr on the rice seedling. However, the complex pollution of Cr and Pb were reduced because of their interaction. The treatment with 250mg/L LaCl3 leads to reduce hazard of heavy metal with higher concentrations on the rice seedlings, and induces growth.
出处
《贵州师范大学学报（自然科学版）》
CAS
2006年第1期39-42,共4页
Journal of Guizhou Normal University：Natural Sciences
关键词
铬
单元与复合污染
镧
水稻
Cr
single and complex pollutants
lanthanum
rice
