Study on Effect of Cupric Pesticides on Eco-environment

The residue accumulation status of copper in orchard soil where bordeaux mixture was applied for many years, its effects on fruits and intercrop and interplant ing of another crop were elaborated. The accumulation pattern of copper in s oil, and the allowed years of the safety use of some new cupric pesticides in the fu ture application were predicted with the experimental results of their residues in fruits and vegetables, and the practical experiences of bordeaux mixture applied in orchard over a long period of time.