Abstract: To analyze degradation effect of fenpropathrin, carbendazim, propiconazole, chlorpyrifos, methidathion on Solanum muricatum trees by Zhanshi biological degradation of pesticide. The pesticides with biological degradation of pesticide were used on Solanum muricatum trees, and blank control was done at the same time, the degradation effect of biological degradation of pesticide to pesticides on days 1, 5, 10 and 15. The results showed that the Zhanshi biological degradation of pesticide had degradation effect to fenpropathrin, carbendazim and propiconazole, the degradation rate was from 55.3% to 90.7%, the degradation effect was not remarkable to chlorpyrifos and methidathion, the degradation of cycle was 1~15 days, and the effect had weakened after 15 days.

Key words: Zhanshi biological degradation of pesticide, Solanum muricatum tree, pesticide residue, degradation effect