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A (, Phyllotreta striolata (Fabriius)) adult study, combined with the determination of biological activity, directed screened 19 families and 27 species material, plant extracts active tracking of striped flea beetle biological striped flea The activity of the main line, screened on striped flea beetle has a high biological activity of plant lantana (Lantana camara L.), and to explore the lantana ethanol and different solvent extracts of striped flea beetle biological activity and its active component, the initial separation; in indoor research foundation, a field experiment to explore the field control effect of ethanol reflux extract lantana striped flea beetle. In this thesis, including the following: 1. Determination of the biological activity of different solvent extracts of 27 kinds of heterologous plants striped flea beetle. The laboratory test results show that most of the plant for testing plant extract ethanol cold soak striped flea beetle adults of repellent and antifeedant activity, including the plant Bauhinia, Eucalyptus tereticornis, lantana, false even Alice species, winter jasmine, Aglaia blue, banyan, oriental arborvitae, flying grass extract striped flea beetle with higher repellent and antifeedant activity, its 48h repellent rates were 92.77%, 88.45%, 91.00% , 87.32%, 86.51%, 86.70%, 83.36%, 88.02% and 85.26%; antifeedant rates were 81.47%, 63.99%, 82.73%, 82.50%, 68.18%, 80.26%, 82.86%, 83.50%, 79.68% and 71.94%; lantana, Aglaia orchid, Bauhinia, tuberose, oriental arborvitae, false Forsythia species, poinsettia, banyan, flying grass and the Phytolacca if dozens of plant extracts striped flea beetle has cytotoxicity. Same extract concentration 0.025gDW/ml, the 96h of corrected mortality were 28.33%, 20.00%, 18.33%, 18.33%, 21.67%, 18.33%, 21.67%, 16.67%, 13.33% and 10.00% . 2. Comprehensive measure and compare the biological activity of ethanol extract of lantana and different solvent extracts striped flea beetle. The results show that: lantana ethanol extracts of different extraction methods, 70% ethanol extract of yellow striped jump higher biological activity of beetle, striped flea beetle biological activity mainly as strong repellent and antifeedant effect, stomach poisoning and contact action is weak, its indoor 48-hour rate of repellent and antifeedant rate were 95.57% and 85.48%; 72h poisoned the mortality and 24h tag the mortality rates were 31.67% and 53.33%. Different solvent extract of Lantana Dan ethanol reflux extracts ethyl acetate extracts of striped flea beetle biological activity of the highest indoor the 48h the repellant rate and antifeedant rate were 75.58% and 72.06%, respectively, and with the other extract significant difference (P lt; 0.05); 72h stomach poison death rate and 24h tag the mortality of 46.33% and 43.33%, respectively. Macroporous resins, PDH-600 on ethyl acetate extract was subjected to column chromatography, and then pass
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