The invention relates to a
pesticide composition containing extracts of
artemisia capillaris and
rheum officinale and a preparation method and application thereof, belongs to the field of pesticides, and provides the
pesticide composition containing the extracts of the
artemisia capillaris and the
rheum officinale in order to solve the technical problem.
Active components of the
pesticide composition containing folium isatidis and the
rheum officinale extract are extracted from the following raw medicinal materials in parts by weight: 10 to 30 parts of
artemisia capillaris and 1 part of rheum officinale. The common extracts of the
artemisia capillaris and the rheum officinale have a synergistic effect, and the effect of preventing and treating apple altermaria
leaf spot of crops is obvious; by the adoption of the folium isatidis and the rheum officinale extract for joint extraction, the contents of scoparone, leaf
rheum emodin and other bacterial
active components with main groups basically the same as those in the scoparone and the leaf
rheum emodin are increased; the apple altermaria
leaf spot is prevented and treated, the
immunity system of the crops can be improved, and the activity of the crops can be obviously enhanced; traditional
Chinese herbs are used as raw materials, so that pesticide residues are avoided; compared with an independently used chemical-source pesticide, the pesticide composition is environment-friendly; meanwhile, when the pesticide composition is used, the effective concentration is low, and the cost is low.