Plant-derived extract fungicide for crops and preparation technology thereof

Abstract

The invention discloses plant-derived extract fungicide for crops and belongs to the technical field of agriculture, aiming at solving the problems in the prior art that the fungicide has great toxicity and poor inhibition on bacteria. The key point of the technology is characterized in that the plant-derived extract fungicide for the crops is prepared from the following raw materials: a plant-derived extract component, citric acid, glycerol, an antioxidant, sodium chloride and de-ionized water. The plant-derived extract fungicide is prepared by taking pure natural substances extracted from plants including aloe, fructus gleditsiae, Chinese arborvitae twig and leaf, toona sinensis leaf and the like as main components, and basically has no toxin on mammals; dipropylene glycol monomethyl ether is used as a main component and a chemical structure only contains three elements including carbon, hydrogen and oxygen; a degradation product has extremely good environmental compatibility. The plant-derived extract fungicide has good bioactivity on certain plant-derived bacteria, and has a relatively high inhibition effect on blumeria graminis, cotton rhizoctoniosis, pythium aphanidermatum and colletrichum orbiculare. The inhibition rate on tomato botrytis cinerea and leaf mold disease reaches about 95 percent; the plant-derived extract fungicide has no toxin, high safety and important market value and social value.

Description

technical field [0001] The invention relates to the technical field of agriculture, in particular to a fungicide for crops extracted from plant sources and a preparation process thereof. Background technique [0002] my country is a large agricultural country, and the use of chemical agents in the field of agricultural applications accounts for more than 90%. Toxic penetration and resistance caused by long-term use of chemical agents inevitably cause serious pollution to the land, waters, atmosphere and other environments, and seriously affect people's health. In order to protect the environment and human health, the United Nations has formulated the "PIG" program, which has included 22 commonly used chemical pesticides in the restricted production and use of chemicals, and strives to completely destroy, prohibit and restrict the use of highly toxic pesticides on a global scale. pesticide. Corresponding policies have also been formulated in our country to advocate the use ...

AI Technical Summary

Problems solved by technology

[0003] Therefore, in view of the fungicides such as chlorothalonil, carbendazim, thiophanate and trimethrin currently on the market, as well as low-toxicity pesticides with high prices that rely on imports, such as thiophanate, chlordimeprid, deltamethrin, etc., it is necessary to Provide a kind of crop fungicide extracted from botanical sources and its preparation process, solve the serious "3R" problems caused by the large-scale use of the above-mentioned chemical agents to prevent and control crop pests and diseases, namely resistance, resurgence, Residue, avoiding that it affects the control effect, and seriously pollutes the environment, which in turn causes a new crisis of pests and diseases