65 results about "Exigua" patented technology

The invention discloses a method for improving parasitic ability of parasitic wasps by utilizing a hairyvein agrimonia herb and bud ethanol extract. The method is designed against the situation that the parasitic ability of the parasitic wasps in the natural world is usually not high, when in great occurrence amount of pests, the natural pest control effect is small, and the complete control of the pests can not be realized. The use of the traditional Chinese medicine hairyvein agrimonia herb and bud ethanol extract for processing meteorus pulchricornis can significantly improve the parasitic amount of the meteorus pulchricornis to vegetable major pest spodoptera exigua and enhance the pest control ability of the parasitic wasps. Compared with the traditional pest control which takes the pests as a target object, the technology takes the parasitic wasps which are the parasitic natural enemies of the pests as the target object and uses the hairyvein agrimonia herb and bud ethanol extract to improve the parasitic amount and the parasitic speed of the meteorus pulchricornis, so as to improve the pest control effect. The technology not only has evident synergy, but also has high safety and can effectively improve the biological control level of the pests. The economic, the social and the ecological benefits are very significant after a large number of applications on the production.

The invention relates to a dinotefuran and chlorpyrifos compound pesticide. The pesticide comprises effective active ingredients, auxiliary agents and fillers and is characterized in that: the effective active ingredients are the dinotefuran and the chlorpyrifos, and the ratio of the dinotefuran to the chlorpyrifos is 1-60:1-80. The invention has the advantages that: the pesticide has the effects of obviously improving efficiency and continuously preventing and controlling insects after the dinotefuran and the chlorpyrifos are compounded, and has higher activity on tryporyza incertulas and chilo suppressalis of paddy, cnaphalocrocis medinalis, plutella xylostella of cruciferous vegetables, spodoptera exigua, prodenia litura and aphid and the insect spectrums of the pesticide are expanded.

The invention relates to the field of insecticides, particularly to a medicinal plant insecticide and a preparation method thereof. The medicinal plant insecticide is prepared from, by weight part, 15-35 parts of tobacco extract, 10-30 parts of ginkgo leaf extract, 8-25 parts of sophora root extract, 8-25 parts of derris trifoliata extract, 30-35 parts of ternate pinellia extract, 0.5-1 part of emulsifier, 0.5-1 part of penetrant and 0.5-1 part of stabilizer. By taking tobacco, ginkgo leaves, sophora root, derris trifoliata and ternate pinellia as the principal raw materials and processing different raw materials, the prepared medicinal plant insecticide can achieve significant killing effects of higher than 80% on plutella xylostella, helicoverpa armigera, aphidoidea and spodoptera exigua.