CN105962007A - Chemical prepared from kaolinite and capable of reducing pesticide residues of fruits and vegetables and using method of chemical - Google Patents

Abstract

The invention provides a chemical prepared from kaolinite and capable of reducing pesticide residues of fruits and vegetables. Liquid is prepared from an active ingredient kaolinite, an alkaline compound is added to regulate the pH value to be more than 8, the content of the kaolinite is 8 to 20 weight percent, the using concentration of water to the chemical is (100 to 800) to 1, the chemical is sprayed to fruits and vegetables to which pesticides are applied more than 10 hours before the fruits and the vegetables are picked or harvested to completely contact with the whole plants, and after the chemical is used for 10 hours, the fruits and the vegetables are picked, harvested and washed, and the removal rate of both systemic and contact pesticides is 80 percent or above. The pesticide residues of the fruits and the vegetables are greatly reduced, and the safety of food is improved.

Description

Preparation of medicine for reducing pesticide residues in fruits and vegetables by using white stone resin and its application method

technical field

The invention relates to agriculture, in particular to a medicine for reducing pesticide residues in fruits and vegetables prepared by using white stone fat and its application method, belonging to the technical field of biomedicine.

technical background

If the diseases of crops are not prevented and controlled in time, the quality of crops will be reduced, the yield will be reduced, and in severe cases, the harvest will even be lost, which will bring huge losses to agricultural production. Pesticides are one of the important means of production in the process of crop cultivation. Pesticides play a very important role in increasing yield and reducing the occurrence of diseases. However, many pesticides are harmful substances, causing environmental pollution and pesticide residue problems in production and use. In the process of planting crops, a large number of pesticides are used, resulting in excessive pesticide residues and frequent occurrence of food poisoning incidents. With the development of science and technology and the improvement of living standards, people have higher and higher requirements for food safety. Eating green and healthy food has become the common voice of the people.

Baishizhi is a commonly used traditional Chinese medicine. It has the functions of nourishing lung qi, thickening intestines, nourishing bone marrow, treating insufficiency of five viscera and palpitations, restlessness in the heart, relieving abdominal pain and water discharge, small intestine pain, hot loose stools with pus and blood, women's metrorrhagia, bleeding from redness, and expelling carbuncles. Sore hemorrhoids and other effects. After many experiments, we found that the white stone resin has a better effect of reducing pesticide residues after it is made into a liquid and sprayed on crops.

Contents of the invention

The purpose of the present invention is to provide a medicine for reducing pesticide residues in fruits and vegetables prepared by white stone fat, which can greatly reduce pesticide residues in fruits and vegetables for systemic and contact pesticides, and improve food safety. And the dosage is less, and the cost is low.

The object of the present invention is achieved through the following technical solutions:

The medicine for reducing pesticide residues in fruits and vegetables is prepared by using white stone resin, which is characterized in that it is prepared by using white stone resin as an active ingredient.

The medicine for reducing pesticide residues in fruits and vegetables prepared by using white stone fat according to the present invention is characterized in that it is made into a liquid and added with an alkaline compound to adjust the pH value to be greater than 8.

The medicine for reducing pesticide residues in fruits and vegetables prepared by using white stone fat according to the present invention is characterized in that: the basic compound is sodium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate, ammonia and the like.

The preparation of the medicament for reducing pesticide residues in fruits and vegetables by using white stone fat according to the invention is characterized in that it is made into a liquid, and the white stone fat content is 8-20% by weight percentage.

The method for using white stone fat to prepare medicines for reducing pesticide residues in fruits and vegetables according to the present invention is characterized in that: the use concentration is water: medicine = 100-800: 1, and the fruits and vegetables to which pesticides have been applied should be prepared 10 days before picking or harvesting the fruits and vegetables. Spray for more than 1 hour, make the whole plant fully contact the liquid medicine of the present invention.

The method for using white stone fat to prepare medicines for reducing pesticide residues in fruits and vegetables according to the present invention is characterized in that: the use concentration is water: medicine = 500: 1, and the fruits and vegetables to which pesticides have been applied should be harvested more than 24 hours before the fruits and vegetables are picked or harvested. Spray to make the whole plant fully contact with the liquid medicine of the present invention.

Fruits and vegetables in the present invention refer to fruits and vegetables.

The present invention has been completed thus far.

There are two types of pesticides, systemic and contact. 4-5 hours after the application of systemic pesticides, systemic insecticides and fungicides, 80% of the active ingredients can enter the tissue through the absorption of the roots, stems, leaves, etc. of the plant, so that the pathogens and pests that eat lethal. Plants do not absorb contact pesticides systemically, and the pesticides contact the insects to kill the pests.

For different fruit and vegetable plants and different pesticides, we have carried out the test of the drug application method for reducing pesticide residues of the present invention, including the timing of using the present invention, the concentration of use, and the use of two types of pesticides for systemic and contact killing. method etc. After repeated tests, the results show that after 10 hours of using the medicine of the present invention, after picking and harvesting, after washing, the removal rates of both systemic and contact pesticides are more than 80%. It greatly reduces the amount of pesticide residues in fruits and vegetables and improves the safety of food.

detailed description

The medicine for reducing pesticide residues in fruits and vegetables is prepared by using white stone resin, which is characterized in that it is prepared by using white stone resin as an active ingredient.

The medicine for reducing pesticide residues in fruits and vegetables prepared by using white stone fat according to the present invention is characterized in that it is made into a liquid and added with an alkaline compound to adjust the pH value to be greater than 8.

The medicine for reducing pesticide residues in fruits and vegetables prepared by using white stone fat according to the present invention is characterized in that: the basic compound is sodium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate, ammonia and the like.

The preparation of the medicament for reducing pesticide residues in fruits and vegetables by using white stone fat according to the invention is characterized in that it is made into a liquid, and the white stone fat content is 8-20% by weight percentage.

The use method of the present invention for preparing medicines for reducing pesticide residues in fruits and vegetables with white stone fat is characterized in that: the use concentration is water: medicine = 100-800: 1, and the fruits and vegetables that have been applied with pesticides should be harvested 10 hours before the fruits and vegetables are picked or harvested. More than spraying, the whole plant is fully contacted with the liquid medicine of the present invention.

A method for using a drug for reducing pesticide residues in fruits and vegetables according to the present invention is characterized in that: the concentration of use is water: drug = 500: 1, and the fruits and vegetables that have been applied with pesticides are sprayed more than 24 hours before the fruits and vegetables are picked or harvested. The whole plant is fully exposed to the medicinal solution of the present invention.

Example 1:

Take 20kg of white stone fat, add water to 100kg, stir evenly, and fully disperse with a colloid mill to prepare an emulsion for reducing pesticide residues in fruits and vegetables.

When cucumber downy mildew occurs, chlorothalonil aqueous emulsion (800 times dilution) is applied, once every 7 days, and sprayed 3 times in a row. 12 hours before picking cucumbers, the cucumber plots were divided into two, and one piece was treated with a medicinal liquid (200 times liquid) for reducing pesticide residues in fruits and vegetables, and the sprayer was sprayed until the whole plant of each cucumber was fully exposed to the medicinal liquid of the present invention. The other piece is treated with clean water, and sprayed with a sprayer until the whole plant of each cucumber is fully exposed to clean water. After washing with water after harvesting, the residual amounts of chlorothalonil are: 0.37 mg/kg for those treated with the drug liquid (200 times liquid) for reducing pesticide residues in fruits and vegetables, and 2.06 mg/kg for those treated with clean water. Compared with the treatment with clear water, the residual chlorothalonil of cucumbers treated with the present invention is reduced by 81.7%.

Example 2:

Take 8 kg of white stone fat, add water to 100 kg, stir evenly, fully disperse with a colloid mill, add sodium carbonate while stirring, until the pH value is 8, and obtain an emulsion that reduces pesticide residues in fruits and vegetables.

When cucumber downy mildew occurs, chlorothalonil aqueous emulsion (800 times liquid) is applied, once every 7 days, and sprayed continuously for 3 times. Fifteen hours before picking cucumbers, the cucumber plots were divided into two, and one piece was treated with a medicinal liquid (500 times liquid) for reducing pesticide residues in fruits and vegetables, and the sprayer was sprayed until the whole plant of each cucumber was fully exposed to the medicinal liquid of the present invention. The other piece is treated with clean water, and sprayed with a sprayer until the whole plant of each cucumber is fully exposed to clean water. After harvesting, wash with water, and test the residual amount of chlorothalonil respectively. The results are: 0.29 mg/kg for the drug liquid (500 times liquid) for reducing pesticide residues in fruits and vegetables, and 1.98 mg/kg for the water. Compared with the treatment with clear water, the residual chlorothalonil of cucumbers treated with the present invention is reduced by 85.4%.

Example 3:

Take 10kg of white stone fat, add water to 100kg, stir evenly, fully disperse with a colloid mill, add sodium hydroxide while stirring, until the pH value is 11, and obtain an emulsion that reduces pesticide residues in fruits and vegetables.

When cabbage aphids occurred in pakchoi, fenthion (50 ml of 50% emulsifiable concentrate, sprayed on 30 kg of water) was applied. 20 hours before harvest, the pakchoi plot was divided into two, and one was used to reduce fruit and vegetable pesticide residues. Medicinal liquid (300 times liquid) is processed, and sprayer is sprayed until the whole plant of every pakchoi is fully contacted with medicinal liquid of the present invention. The other piece is treated with clear water, and the sprayer is sprayed until the whole plant of each pakchoi is fully exposed to clear water. After harvesting, wash with water, and test the residual amount of fenthion respectively. The results are: 0.01 mg/kg treated with the drug liquid (300 times liquid) for reducing pesticide residues in fruits and vegetables, and 0.11 mg/kg treated with clean water. Compared with the treatment with clear water, the fenthion residue in pakchoi treated with the present invention is reduced by 90.9%.

Example 4:

Take 15kg of white stone fat, add water to 100kg, stir evenly, fully disperse with a colloid mill, add sodium bicarbonate while stirring, until the pH value is 11, and obtain an emulsion that reduces pesticide residues in fruits and vegetables.

When controlling rape greenhouse whitefly, apply dichlorvos, spray with 1000 times dilution of 80% emulsifiable oil, spray once every 7 days, and spray 3 times in a row. 72 hours before harvesting, divide the rape plot into two, one piece Treat with a medicinal liquid (100 times liquid) for reducing pesticide residues in fruits and vegetables, and spray until each rapeseed whole plant is fully exposed to the medicinal liquid of the present invention. The other piece is treated with clear water, and the sprayer is sprayed until the whole plant of each rapeseed is fully exposed to clear water. After harvesting, wash with water, and test the residual amount of dichlorvos respectively. The results are: 0.03 mg/kg treated with the drug liquid (100 times liquid) for reducing pesticide residues in fruits and vegetables, and 0.24 mg/kg treated with clean water. Compared with the treatment with clean water, the residue of dichlorvos in rapeseed treated with the present invention is reduced by 87.5%.

Example 5:

Get 18kg of white stone fat, add water to 100kg, add potassium carbonate while stirring, until the pH value is 9, the emulsion for preventing and controlling plant diseases is obtained.

When controlling cauliflower diamondback moth, spray once with 1000 times dilution of chlorpyrifos stock solution. 72 hours before harvesting, divide the cauliflower plot into two, and treat one piece with the drug liquid (800 times solution) for reducing pesticide residues in fruits and vegetables, and spray it with a sprayer. Until every cauliflower whole plant fully contacts the medicinal liquid of the present invention. The other piece is treated with clean water, and the sprayer is sprayed until the whole cauliflower plant is fully exposed to clean water. After harvesting, wash with water, and test the residual amount of chlorpyrifos respectively. The results are: 0.3 mg/kg treated with the drug liquid (800 times liquid) for reducing pesticide residues in fruits and vegetables, and 1.7 mg/kg treated with clean water. Compared with the treatment with clear water, the residue of chlorpyrifos in cauliflower treated with the present invention is reduced by 82.3%.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Montmorillonite is a large family of minerals. After repeated experiments and studies, we also found that the drugs prepared from different montmorillonites have different effects on reducing pesticide residues in fruits and vegetables. The selection method will be applied for a separate patent.

Claims (6)

1. The medicine for reducing pesticide residues in fruits and vegetables is prepared by using white stone resin, which is characterized in that: it is prepared by using white stone resin as an active ingredient. 2. According to claim 1, the medicine for reducing pesticide residues in fruits and vegetables is prepared by using white stone fat, which is characterized in that: it is made into a liquid and an alkaline compound is added to adjust the pH value to be greater than 8. 3. according to claim 2, prepare the medicine for reducing pesticide residues in fruits and vegetables with white stone fat, it is characterized in that: basic compound is sodium hydroxide, sodium carbonate, sodium bicarbonate, salt of wormwood, ammonia etc. 4. According to claim 1, the medicine for reducing pesticide residues in fruits and vegetables prepared with white stone resin is characterized in that: it is made into a liquid, and the content of white stone resin is 8-20% by weight percentage. 5. The method of using white stone resin to prepare a medicine for reducing pesticide residues in fruits and vegetables, characterized in that: the concentration of use is water: medicine = 100-800: 1, and the fruits and vegetables applied with pesticides are sprayed more than 10 hours before the fruits and vegetables are picked or harvested. Apply to make the whole plant fully contact with the medicinal solution of the present invention. 6. The method according to claim 5 for preparing medicines for reducing pesticide residues in fruits and vegetables with white stone fat, characterized in that: the use concentration is water: medicine = 500: 1, for the fruits and vegetables applied pesticides, 24 hours before the fruits and vegetables are picked or harvested. Spray for more than 1 hour, make the whole plant fully contact the liquid medicine of the present invention.