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Preparation method and application of pesticide-fertilizer granules containing amino-oligosaccharin and lythidathion

A technology of amino oligosaccharins and medicinal fertilizer granules, which is applied in the fields of application, organic fertilizers, and nitrogen fertilizers, and can solve problems such as reduced control effects

Inactive Publication Date: 2022-01-25
中诚国联(河南)生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of a single pesticide is often restricted by factors such as control effect, application range, and phytotoxicity, and with the increase of pest resistance, the control effect decreases. It is very necessary to use fertilizer granules with dual functions of insects and fertilizers

Method used

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  • Preparation method and application of pesticide-fertilizer granules containing amino-oligosaccharin and lythidathion
  • Preparation method and application of pesticide-fertilizer granules containing amino-oligosaccharin and lythidathion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of Modified Chitosan

[0036] Modified chitosan is made by the following steps:

[0037] Step S1: Add 2-hydroxy-4-methoxybenzaldehyde and 2-amino-5-methylthiazole into the flask, then add anhydrous methanol, reflux for 3 hours, cool to room temperature, and distill under reduced pressure to obtain a solid that can be used without Recrystallized from water and methanol, and obtained intermediate 1 after vacuum drying; the dosage ratio of the 2-hydroxy-4-methoxybenzaldehyde, 2-amino-5-methylthiazole, and anhydrous methanol was 2mmol: 1.2mmol: 18mL;

[0038] Step S2: Add intermediate 1 and deionized water to the flask, reflux and add potassium permanganate, and react for 3 hours under reflux to obtain intermediate 2; add intermediate 2 and deionized water to the flask, stir and add dichloride Sulfone and DMF were reacted at 75°C for 4 hours to obtain intermediate 3; the molar ratio of intermediate 1 to potassium permanganate was 1:1, and the ratio of intermedi...

Embodiment 2

[0045] Preparation of Modified Chitosan

[0046] Modified chitosan is made by the following steps:

[0047] Step S1: Add 2-hydroxy-4-methoxybenzaldehyde and 2-amino-5-methylthiazole into the flask, then add anhydrous methanol, reflux for 3 hours, cool to room temperature, and distill under reduced pressure to obtain a solid that can be used without Recrystallized from water and methanol, and obtained intermediate 1 after vacuum drying; the dosage ratio of the 2-hydroxy-4-methoxybenzaldehyde, 2-amino-5-methylthiazole, and anhydrous methanol was 2mmol: 1.2mmol: 18mL;

[0048] Step S2: Add intermediate 1 and deionized water to the flask, reflux and add potassium permanganate, and react for 3 hours under reflux to obtain intermediate 2; add intermediate 2 and deionized water to the flask, stir and add dichloride Sulfone and DMF were reacted at 75°C for 4 hours to obtain intermediate 3; the molar ratio of intermediate 1 to potassium permanganate was 1:1, and the ratio of intermedi...

Embodiment 3

[0055] Preparation of Modified Chitosan

[0056] Modified chitosan is made by the following steps:

[0057] Step S1: Add 2-hydroxy-4-methoxybenzaldehyde and 2-amino-5-methylthiazole into the flask, then add anhydrous methanol, reflux for 3 hours, cool to room temperature, and distill under reduced pressure to obtain a solid that can be used without Recrystallized from water and methanol, and obtained intermediate 1 after vacuum drying; the dosage ratio of the 2-hydroxy-4-methoxybenzaldehyde, 2-amino-5-methylthiazole, and anhydrous methanol was 2mmol: 1.2mmol: 18mL;

[0058] Step S2: Add intermediate 1 and deionized water to the flask, reflux and add potassium permanganate, and react for 3 hours under reflux to obtain intermediate 2; add intermediate 2 and deionized water to the flask, stir and add dichloride Sulfone and DMF were reacted at 75°C for 4 hours to obtain intermediate 3; the molar ratio of intermediate 1 to potassium permanganate was 1:1, and the ratio of intermedi...

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Abstract

The invention discloses a preparation method and application of pesticide-fertilizer granules containing amino-oligosaccharin and lythidathion, and belongs to the technical field of pesticide granule preparation. The preparation method comprises the following steps: step 1, weighing the following raw materials in percentage by weight: 0.1 to 3 percent of amino-oligosaccharin, 0.1 to 3 percent of lythidathion, 10 to 20 percent of a fertilizer, 10 to 20 percent of a first wall material solution, 10 to 20 percent of a second wall material solution, 0.6 to 2 percent of an emulsifier, and 1 to 5 percent of a curing agent, with the balance being water; step 2, adding the raw materials in order and preparing the granules. The granules are applied to control of cucumber root-knot nematode, the first wall material solution is prepared from modified chitosan serving as a protection component, and the protection component has multiple antioxidant and antibacterial active components, so that the prepared granules have longer fertilization preservation time.

Description

technical field [0001] The invention relates to the technical field of preparation of pesticide granules, in particular to a preparation method and application of medicinal fertilizer granules containing amino oligosaccharins and thiazophos. Background technique [0002] Amino oligosaccharins, also known as oligochitosaccharides for agriculture, are produced by unique biotechnology according to the growth needs of plants, and are divided into two types: solid and liquid. Chitooligosaccharide itself is rich in C and N, which can be decomposed and utilized by microorganisms and used as nutrients for plant growth. Thiazophos has excellent nematicidal activity and significant systemic insecticidal activity, and can kill various pests that are resistant to traditional insecticides. It is often used to control pests such as rice stem borer, rice leaf roller, rice planthopper, root-knot nematode, etc. It has the characteristics of high efficiency, low toxicity, and low residue, an...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/40C05G3/60C05G3/80C05G5/12C05G5/30
CPCC05C11/00C05G3/00C05G3/40C05G3/60C05G3/80C05G5/12C05G5/37C05F11/00C05F11/02
Inventor 祝春华李献何孟夏陈峰李单
Owner 中诚国联(河南)生物科技有限公司
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