Method and device for eliminating pesticide residues in crops

Abstract

The invention discloses a pesticide-residue-free disinsection method and device for crops. According to the method, the growing crops which are subjected to pest attacks and need to be disinsected are arranged in a shading isolating cover with rotenone spray protected by anaerobic gas, the insect pests die immediately due to efficient contact killing of the rotenone spray, the cover is dismantled as long as contact killing is finished, protection is destroyed, the rotenone spray is exposed in the sun to be quickly decomposed and volatilized when the rotenone spray encounters with light and air (oxygen), no residue exists, and the environment is not polluted. The device comprises an atomizer for performing atomizing on a rotenone emulsifiable solution, the shading isolating cover arranged on the growing crops needing to be disinsected and an anaerobic protecting gas source. According to the pesticide-residue-free disinsection method and device, the rotenone spray needs to be prevented from being decomposed for effectively killing the pests, protection needs to be destroyed to enable the rotenone spray to be quickly decomposed for being free of residues and pollution, conflictive unity is achieved, the result that chemical synthesized pesticide disinsection is discarded is achieved, pesticide-residue-free disinsection for the crops is achieved, and produced agricultural products such as vegetables and grains are free of pesticide residues.

Description

Technical field [0001] The invention relates to the field of crop insects and pest control disciplines, in particular to a method and device for removing insects without pesticide residues on crops. Background technique [0002] As we all know, modern agriculture in our country uses synthetic pesticide insecticides to eliminate insects in order to increase production and promote good harvest. As a result, agricultural products, vegetables, fruits and grains all have pesticide residues and agricultural land has produced pesticide pollution. Since the use of pesticides in my country for decades, people have been eating pesticide residues. Until now, the accumulation of residues on everyone is increasing. Cancer, blood diseases, incurable diseases, and sub-healthy people are everywhere in adults and children. The government has also taken measures to ban the use of pesticide stars such as dichlorvos, dichlorvos, carbofuran, etc.; the use of agricultural products must be Pesticide res...

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Problems solved by technology

[0003] Plant-derived insecticides are also a class of insecticides, such as alkaloids such as tobacco, pepper, quinine, and poppy; terpenes such as cypress leaves, citronella, mint, eucalyptus, and cinnamon essential oils; , custard apple lactone, etc. can repel insects and kill insects, but they are not fully used in modern agriculture due to their unsatisfactory collection, extraction, use methods, natural decomposition failure, and low insecticidal efficiency. Compound use of other pesticides

Such as ketone rotenone, rotenone is a plant-derived insecticide that has been used for a long time. It is a recommended species for the production of pollution-free agricultural products in the country. Red spiders, yellow worms, thrips, rice planthoppers, borers, day needles, mole crickets, grubs, whiteflies, leafhoppers, army gameworms, hawk moths, noctuids, etc. are all included in the killing list. The crops are safe and have low toxicity to mammals. When pests come into contact with rotenone and enter the insect body, it blocks the electrical conduction between cells and inhibits the mitochondrial respiratory chain. It has poor stability and short duration. It can be completely decomposed and volatilized within 4-8 hours after spraying. After decomposition, there is no residue and no pollution to the environment. It is an ideal insecticide. Poor effect and low efficiency are caused by improper use and failure to prevent the decomposition of rotenone first. For example, when using rotenone EC to remove insects, it is first mixed with water and then sprayed (for example, 80-160 ml of 4% rotenone EC mixed with water 30 kg spray to control vegetable pests), when rotenone is mixed into water, it will react with the oxygen in the water, and then sprayed on the crops in the form of spray in broad daylight, and the rotenone mist will be photolyzed with light and air (oxygen) and oxidation, the concentration of rotenone decreases rapidly, and the low concentration of rotenone is not absorbed by insects. As a result, the insecticidal effect is poor or even ineffective, and the ideal insecticide is buried in this way.

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