Slow-release double-effect pesticide and preparation method thereof

A slow-release, pesticide technology, applied in botany equipment and methods, chemicals for biological control, pesticides, etc., can solve problems such as loss of ability to absorb nutrients, phloem damage, stem distortion, etc., to achieve The preparation method is simple and easy, the co-intercalation structure is stable, and the intercalation structure is stable

Active Publication Date: 2020-01-10
ZIBO VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium dimethyltetrachloride is a phenoxycarboxylic acid selective herbicide with strong systemic conductivity. The drug passes through the stratum corneum and cytoplasmic membrane, and finally conducts to various parts, and has different effects on nucleic acid and protein synthesis in different parts. The effect is to inhibit nucleic acid metabolism and protein synthesis at the top of the plant, so that the growth point stops growing, and the young leaves cannot be stretched until photosynthesis cannot be carried out normally; Increased synthesis promotes abnormal cell division, enlarged root tips, loss of ability to absorb nutrients, resulting in twisted and deformed stems, blockage of sieve tubes, destruction of phloem, and obstruction of organic matter transportation, thereby destroying the normal viability of plants and eventually leading to plant death
At present, there are no published literature and patents on the co-intercalation of hydrotalcite with dimethyltetrachlorate and chlorpyrifos

Method used

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  • Slow-release double-effect pesticide and preparation method thereof
  • Slow-release double-effect pesticide and preparation method thereof
  • Slow-release double-effect pesticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Weigh 17.8g Zn(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 5.6g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 Protection Use the double-drop method to add the salt solution and the alkali solution into the four-neck flask, and stir vigorously. Adjust the pH value to 7 with 0.1mol / L NaOH solution. The resulting slurry was crystallized at 60°C for 72 hours, and the product was placed in a centrifuge, centrifuged at a speed of 2500 rpm for 5 minutes, and then used to remove CO 2 Wash with water until neutral; take out the sample and dry it at 50°C for 48 hours for characterization, and obtain the hydrotalcite precursor ZnAl-NO 3 -LDHs, whose Zn 2+ / Al 3+ =2.

[0040] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 After the deionized water was transferred ...

Embodiment 2

[0045] (1) Weigh 15.4g Mg(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 2.0g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 The salt solution and the alkali solution were added into the four-neck flask by the double-drop method, and the pH value was adjusted to 10 with 5mol / L NaOH solution after the dripping. Centrifuge at rpm for 3 min, then remove CO 2 Wash with water until neutral; take out a small amount of samples and dry them at 90°C for 20 hours for characterization to obtain the hydrotalcite precursor MgAl-NO 3 -LDHs, their Mg 2+ / Al 3+ =2.

[0046] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 After the deionized water was transferred to the four-necked bottle, then add the 10g hydrotalcite precursor MgAl-NO 3 -LDHs, N 2 Protected and heated to 50°C, reac...

Embodiment 3

[0051] (1) Weigh 17.4g Ni(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 5.6g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 Protection Use the double-drop method to add the salt solution and the alkali solution into the four-neck flask, and stir vigorously. Adjust the pH value to 7 with 3.0mol / L NaOH solution. The resulting slurry was crystallized at 80°C for 30 h, and the product was placed in a centrifuge, centrifuged at a speed of 3000 rpm for 4 min, and then used to remove CO 2 Wash with water until neutral; take out the sample and dry it at 50°C for 48 hours for characterization, and obtain the hydrotalcite precursor NiAl-NO 3 -LDHs, whose Ni 2+ / Al 3+ =2.

[0052] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 The deionized water was transferred to a four-neck...

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Abstract

The invention relates to the field of organic-inorganic composite materials, and in particular relates to a slow-release double-effect pesticide and a preparation method thereof. The preparation method comprises the following steps: intercalating MCPA-(2-Methyl-4-chlorophenoxyacetic acid radical) into a hydrotalcite precursor, intercalating chlorpyrifos into the hydrotalcite precursor, and finallytreating the hydrotalcite precursor in a mixed solution containing hydrogen peroxide, n-propanol and water to obtain a slow-release double-effect pesticide; the chemical formula is: [(M<2 +>) 1-x (M<3 +>) x (OH) 2) x +( MCPA-)x (CPF) y.mH2O, wherein x = 0.25-0.33, y = 0.08-0.10, m = 3-6, m is the number of interlayer crystalline water molecules, M<2 +> is a divalent metal ion, M<3 +> is a trivalent metal ion, MCPA-is 2-Methyl-4-chlorophenoxyacetic acid radical, and CPF is chlorpyrifos. The slow-release double-effect pesticide of the invention has stable intercalation structure, can release the MCPA-and the chlorpyrifos l for a long time, and plays a slow-release effect.

Description

technical field [0001] The invention relates to the field of organic-inorganic composite materials, in particular to a slow-release double-effect pesticide and a preparation method thereof. Background technique [0002] Pesticides refer to chemical agents used in agriculture and forestry to prevent and control plant diseases and insect pests and regulate plant growth. There are many varieties of pesticides, which can be mainly divided into fungicides, herbicides, insecticides, and acaricides according to their uses. According to a study by the Food and Agriculture Organization of the United Nations, the global use of pesticides can reduce crop losses by about 30% every year. However, there are some problems in the use of traditional pesticides: (1) The actual utilization rate of pesticides is only about 25% due to environmental factors such as leaching, evaporation, and degradation, and unreasonable factors in human pesticide application. This will not only cause huge econ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/08A01N25/22A01N39/04A01N57/16A01P13/00A01P7/04
CPCA01N25/08A01N25/22A01N39/04A01N57/16
Inventor 刘晓磊石志华秦丽莉
Owner ZIBO VOCATIONAL INST
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