Pesticide based on natural coumarin essential oil in ficus carica leaves, and preparation and application methods
A technology of fig leaves and application methods, applied in the directions of botanical equipment and methods, applications, chemicals used for biological control, etc., can solve the problems of unused, discarded fig leaves, development and application, etc., and achieve significant social and economic benefits. Effect
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[0053] Although the coumarin components are fat-soluble substances, they are volatile components and have the characteristics of being able to escape simultaneously with water vapor. Therefore, they are soluble in hot water. Under the guidance of the theoretical research results, the present invention provides a pesticide based on natural coumarin essential oil in fig leaves and its preparation method and application method.
[0054] This fig leaf essential oil is measured and analyzed by GC / MS, extracts the total ion chromatogram of volatile oil (see Figure 1 to Figure 4 ), through computer search and comparison with the spectrum of standard compounds, the structure identification of the molecules of each component with relatively high content is carried out, and the solvent peak and the impurity peak of the instrument background in the mass spectrum are subtracted, and normalized The relative content of each component in the mass spectrum in the volatile oil was determined ...
Embodiment 1
[0065] Embodiment 1: Get 2Kg of dried fig leaves (yellow-green) after autumn, pulverize after natural drying, directly add 4Kg of boiling water, ultrasonically assisted extraction, cover and seal after soaking for 18 hours, separate solid-liquid and filter out solid residues, Directly make fertilizer and put it on the vegetable field to kill larvae;
[0066] The liquid obtained after solid-liquid filtration can be directly diluted with water 1:3 times to obtain a coumarin-containing aqueous pesticide product, which is sealed and packaged and stored at room temperature for later use. Spray directly on the leaves of plants (to control aphids and red spiders); or, spray the soil and around the vegetable field (to control ants, nematodes and mole crickets).
Embodiment 2
[0067] Embodiment 2: Get 3 Kg of dried fig leaves (yellow green) after autumn, crush them after natural drying, directly add 9 Kg of boiling water, extract with ultrasonic assistance, cover and seal and soak for 20 hours, separate the solid and liquid to filter out the solid residue, and directly It can be used as fertilizer to kill larvae in vegetable fields;
[0068] The liquid obtained after solid-liquid filtration can be directly diluted with water 1:5 times to obtain a coumarin-containing aqueous pesticide product, which is sealed and packaged and stored at room temperature for later use. Spray directly on the leaves of plants (to control aphids and red spiders); or, spray the soil and around the vegetable field (to control ants, nematodes and mole crickets).
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