A kind of broad-spectrum botanical insecticide and preparation method thereof

Abstract

The invention discloses a broad-spectrum botanical insecticide and a preparation method thereof, belonging to the technical field of agricultural pest control and prevention. 1 to 3 parts of ragweed; the broad-spectrum botanical insecticide provided by the present invention uses invasive plants as raw materials, reuses harmful organisms, has the advantage of green safety, and is effective against wheat aphid, Spodoptera litura, The maximum control effects of corn borer and corn aphid in 72 hours were 95.7%, 97.4%, 94.2% and 96.9%, respectively, which had significant insecticidal effects.

Description

technical field [0001] The invention relates to the technical field of agricultural pest control, in particular to a broad-spectrum plant-derived insecticide and a preparation method thereof. Background technique [0002] Invasive plants are a worldwide environmental problem. The harm of invasive plants is not only reflected in the threat to biodiversity, but also spends a lot of energy and financial resources on their prevention and control, which indirectly affects national economic development. However, a large number of studies have proved that invasive plants undergo a great genetic evolution of secondary metabolism in order to adapt to the new environment during the invasion process. These genetic evolution of secondary metabolism often have high resistance to polyphagous insects. These characteristics provide good materials for the development of high-efficiency and low-toxicity plant-derived insecticides, but there is little research and development of these resource...

AI Technical Summary

Problems solved by technology

At present, in order to prevent and control the outbreak of these agricultural pests and protect the normal growth of crops, farmers need to apply a large amount of chemical pesticides every year, but the input of a large amount of chemical pesticides into the agricultural environment not only increases the cost of agricultural production, but also causes pesticide residues , destroying the health of agricultural ecology

Therefore, more and more plant protection workers are paying more and more attention to the development of green biological agents, but from the research on the synergistic interaction between plants and insects, it can be found that a plant is only resistant to its main parasitic pests, which means A single plant essential oil is only active against a certain type, or even a certain type of pest. If we only focus on the development of one plant essential oil, it cannot meet the requirements of cost-effectiveness in terms of practical application and development costs.

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