Botanical fungicide, extracting method and usage thereof

Abstract

The invention relates to the field of agricultural fungicide, in particular to a botanical fungicide, an extracting method and the usage thereof. The botanical fungicide adopts extracts of plant raw materials such as sisal leaves, wild chrysanthemum, Chinese parasol leaves, ginger, bitter gourd or the like; the original preparation technology is improved, and the botanical fungicide is used for controlling agricultural diseases and has good environmental compatibility; the three-time extracting technique is adopted, and ultrasound-assisted extraction is applied, so that the maximum extraction capacity of active ingredient can be ensured; the technique is simple and seldom affects the environment, and the extracts have good effect on sterilization and bacteriostasis.

Description

technical field [0001] The invention relates to the field of agricultural fungicides, in particular to a botanical fungicide extraction method and application thereof. Background technique [0002] In my country, chemical fungicides are mainly used in the prevention and control of crop diseases. Although the sterilization speed is fast and the effect is obvious, with the long-term and unreasonable use of various chemicals, the bacteria have developed serious drug resistance, and the drug effect is gradually increasing. decrease, and the harm to the environment is becoming more and more serious. [0003] The disadvantages of chemical pesticides are mainly manifested in three aspects: [0004] 1. The serious occurrence of drug resistance of bacteria: plant pathogenic bacteria, like pests, are also resistant to chemical agents, which was reported in the 1940s, and systemic fungicides came out in the 1960s. Due to the selectivity and specialization of the single-action mechanis...

AI Technical Summary

Problems solved by technology

Since the promotion and use of systemic fungicides in my country in 1980, drug resistance problems have also appeared. For example, carbendazim has been used for several years to prevent pear tree scab because of high drug resistance. Severe drug resistance occurs during use and affects use

[0005] 2. Increasing pesticide residues in agricultural products

[0006] 3. The ecological balance is destroyed

Although chemical pesticides are very lethal to pests, they also kill natural enemies at the same time, destroying the ecological balance, causing rampant regeneration of pests, and making secondary pests become major pests

[0007] With the gradual improvement of people's living standards, people's requirements for living environment and quality of life are also gradually increasing. The serious drawbacks brought by traditional chemical pesticides have hindered the development of this requirement, especially the development of green food and pollution-free food. After China's accession to the WTO, the export of agricultural products is facing very severe "green barriers", which has seriously affected the competitiveness of my country's agricultural products in the international market, and thus caused great losses to our economy and foreign trade.

[0008] Natural plants such as sisal leaves, wild chrysanthemums, phoenix leaves, ginger, and bitter gourd are often used as traditional Chinese medicines, but there are no relevant materials such as research reports on the bactericidal activity of the above-mentioned natural plants in the agricultural field. The extraction process of biologically active substances has not been reported, and there is no case that its extract is used in agriculture as a fungicide

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