The invention relates to an ecological agricultural
drug and a preparing method compounded by a content of
Chinese traditional herb plant insecticide and amino group
oligosaccharide. The ecological agricultural
drug is refined by blending and
processing the
plant gradients containing one or a plurality of insecticide and disinfecting components and the Chitosante raw materials and solutions which are extracted with the amino group
oligosaccharide. The weight percentages of all components are respectively: five to thirty percent of
plant materials, seventy to ninety five percent of Chitosante material, and the solvents are
alcohol and water. When in blending and configuring process, additives are added; wherein, the additives are one or a plurality of the agents, such as an
antiseptic agent, a dispersing agent, a surface
active agent, a penetrant or an emulsifying agent. The plant materials are materials such as
Sophora flavescens, tobacco, Indian chinaberry fruit,
pyrethrum, climbing groundsel or Aztec marigold, etc., the invention has the beneficial effects of multifunction of insecticide and disinfection, anti
disease,
disease prevention; easy degradation of the product, no residues and extensive
raw material source. The working process of the invention simplifies the processes of extraction, condensation and filter with low producing cost.