A potted-spinach experiment was conducted to investigate the effects of four kinds of copper products

namely

Kocide2000(KCD)

Bordeaux nutrition protective powder(BNPP)

Bordeaux mixture(BDM)

copper sulfate(CS) and organic matter on the soil quality.Results showed that soil catalase activity was stimulated by the copper products and the inhibition of urease and sucrase activities by copper products were also observed

especially declined significantly in the treatment of BDM

the two enzymes activities in high BDM treatment were not detected.Moreover

the biological indexes of soil were affected

basal respiration and metabolic quotients were increased

microbial carbon was declined.Correlation analyses indicated that there existed significant negative correlation and positive correlation between biological and enzyme activity and available Cu.Furthermore

the available Cu and Zn(besides BDM) were increased

whereas available contents of Fe

Mn were obviously lower than contrast;pH (besides CS) was increased

EC(besides BDM) was declined.The order of the four copper products based on their effects on soil biochemical characteristics was: BDM>CS>BNPP>KCD.The application of organic matter weakened the effects of copper products on biology and enzyme activities

but the available contents of heavy metal were improved.