关键词: 重金属（CuZnCd）, 重金属（CuZnCd）, 桉树, 种子发芽, 根生长, 生态毒性

Abstract:

Enzymatic activities in heavy metal polluted soil had been widely used to indicate the extent of pollution. Indoor cultivation experiment was conducted to study effects of copper, zinc, lead compound pollution on the soil catalase, converting enzyme and urease activity.The results show that copper and zinc can inhibit the three enzymes, enzyme zinc on three significant inhibitory effect, and the concentration of lead in the next three to stimulate role of the enzyme. Copper, zinc, lead pollution on the compound of urease showed synergistic inhibition of the negative effect;Invertase right there has been a certain antagonism, particularly the higher the concentration of lead , the antagonistic effect was obvious, right catalase with the major impact of copper,zinc concentration increased, the effect of zinc significantly. From the angle of the soil enzymes,lead to mild zinc and copper pollution improvement, and the copper pollution repair effect is not significant.