摘要
本文选用四川紫色土共8个样品,进行了莴苣、辣椒的土培试验和Cu吸附试验,结果表明,土壤吸Cu能力因土壤不同而异,吸Cu特征指数按红棕紫泥>紫泥土>夹砂泥>豆办泥>大土泥>红砂土>红紫泥>砂土递减,高量Cu处理对莴苣、辣椒均有毒害,导致减产,不同土壤上Cu毒性大小的顺序正好与吸Cu特征指数相反,但是对于特定的作物都统一于平衡溶液浓度:莴苣0.5μg/mL,辣椒2.5μg/mL,初步认为,使用等温吸附方法估测作物Cu毒性临界值是可行的。
Copper adsorption characteristics and its influence onthe vegetable growth in purple soil collected from Sichuan Province were studied. The results showed that copper adsorption was dependent on the types of soil, and characteristic index of Cu sequentially decreased from No. S08 soil to Sol soil and has a great influence upon the vegetables. For a given crop, the same critical intensity index of copper toxicity could be , obtained in different soil, e.g. 0.5μg Cu/ml of soil solution for lettuce and 2.5 μgCu/ml for cayenne pepper. . It. was concluded that adsorption method could be used to asses, Cu toxicity threshold.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1990年第1期31-35,共5页
Environmental Science
