The Control Effect Study of the Extract of Pyrethrum on Aphid

[Objective] The aim of the research was to provide references for pesticide exploitation with the extract of pyrethrum.[Method] The extract of pyrethrum was extracted by soxhlet extraction from Chrysanthemum Cinerariaefolium Vis..And the compared efficacy test was executed between extract of pyrethrum and other several normal synthetic insecticide.[Results] The synthetic insecticide acted faster than that of extract of pyrethrum,but there was no significant differences in the final effect.[Conclusion] The extract of pyrethrum could be used on the vegetable production for the substitute of synthetic insecticide.