Earthworms On The Copper Ion Concentration And Its Impact On Artificial Soil Morphology Of Cu-Zn

Pollutants containing heavy metals into the soil through various means . Crop yield and quality caused by the decline in. the health of humun were endangered through the food chain. The atmosphere and water quality were caused deteriorated. Repair heavy metal contamination of soil through earthworms are the current hot spots of this research in the field of. Earthworm could enhance the bioavailability of heavy metals by their activity and soil microbial interactions. This paper studies the following questions. Different concentrations of copper and zinc pollution on the growth rate of earthworms. The characteristics of the concentration and distribution coefficient of copper in earthworms epidermal and gut. the earthworm intestinal peroxidase zymogram were impacted by zinc and copper. soil heavy metal distribution patterns were impacted by earthworm activity. With a view to the study of earthworms in the antitoxic. Earthworms in the soil - phytoremediation to provide a scientific basis. The main findings are as follows1 Low concentrations of copper and zinc promote the growth of earthworms. more than a certain concentration showed inhibition. the exaltation of concentration of pollution and the extension of contact time with the pollution will aggravate the degree of inhibition.sometimes the concentrations are so high to appear negative growth.2 Copper in earthworms epidermis and gut with the total concentration of exogenous copper are increaded with the increase in copper and concentration contamination of the culture time increased . And the accumulation of copper in the intestine is greater than the rate of epidermal.copper in intestinal translate to epidermal fat system increased while copper concentrations in soil increased. the ratio of copper in the intestinal and epidermal in downward trend with the increase of the concentration of copper in soil. But with the passage of time has increased。Earthworms have a strong enrichment capacity on the copper of contamination soil.after cu2+ 200 mg / kg cultivate 21 days. copper concentrations of earthworm intestinal are 2.65 times of copper concentration in the soil environment. The highest concentration of copper value of 0.674 mg. 10 -1。3 The treatment of earthworm intestinal enzyme POD with the location and bandwidth are different under copper contamination. After a week of copper exposure, POD isozyme relative transfer of the treatment are greater than the blank. The main light staining with shallow, sub-bands appear. The zinc pollution is different from copper pollution. Peroxidase enzyme on the location and bandwidth performance with the more obvious。When Concentration reached the level of 260mg/kg.the bandwidth of Isozymes activated by zinc is wider than the copper. This is conducive to earthworm resistance to its poisoning effect of heavy metals in intestinal.4 Earthworm activity on soil in the form of copper has a certain influence.At the same time, Earthworms have greater influence on the exchangeable of soil when the concentration enhance. The concentration of exchangeable increase. However, earthworms are limited resistance. earthworms have a serious adverse reaction when reach to 200mg/kg.the influence of earthworms on soil became inferior. Patterns from the same time deal with the distribution of the trend。Earthworms stay at longer at a concentration have greater influence on the exchangeable copper of soil. Exchangeable copper continued to increase, and other forms of copper less pronounced trend. Earthworm activity on heavy metals of soil in the form of zinc have a greater impact. Demonstrated through experiments with the passage of time earthworm activity on soil exchangeable zinc in the impact of a larger volume and from this form of treatment in the percentage of both on an upward trend, the exchange of state there is an increase in zinc conducive to the improvement of soil restoration.