Pesticide slow-release agent and preparation method thereof

A slow-release agent and pesticide technology, applied in the field of pesticides, can solve the problems of slow production time and achieve the effects of short cycle, improved utilization rate and simple preparation process

Inactive Publication Date: 2017-05-10
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the production time of this method is slow, and the reaction time takes 4 days

Method used

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  • Pesticide slow-release agent and preparation method thereof
  • Pesticide slow-release agent and preparation method thereof
  • Pesticide slow-release agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This example provides a preparation method of a pesticide slow-release agent. The method first modifies wheat straw with phytic acid, and then adsorbs the pesticide onto the phytic acid-modified wheat straw, which specifically includes the following steps:

[0035] Step 1, wheat straw pretreatment: clean the wheat straw, dry it at 50°C, crush it into 100-200 mesh powdered wheat straw, then wash the wheat straw powder with distilled water, then filter, and filter the filtered material with 0.1mol / Soak and stir in L hydrochloric acid for 2 hours in the greenhouse for acidification, then ultrasonically wash for 30 minutes (40 kHz, 300 W), filter, wash with absolute ethanol until neutral, and dry at 50 ° C to obtain pretreated wheat straw. Optical microscope characterization of wheat straw powder figure 1 As shown, the scanning electron microscope characterization of wheat straw powder is shown in figure 2 shown.

[0036] Step 2, preparation of phytic acid modified whea...

Embodiment 2

[0042] This example provides a preparation method of a pesticide slow-release agent. The method first modifies wheat straw with phytic acid, and then adsorbs the pesticide onto the phytic acid-modified wheat straw, which specifically includes the following steps:

[0043] Step 1, wheat straw pretreatment: same as Step 1 of Example 1.

[0044] Step 2, preparation of phytic acid-modified wheat straw: same as Step 2 of Example 1.

[0045] Step 3, preparation of imidacloprid pesticide slow release agent: same as Step 3 of Example 1.

[0046] The concentration of imidacloprid in the filtrate was measured by ultraviolet-visible spectrophotometer, and the adsorption amount of imidacloprid on phytic acid modified wheat straw was calculated. The results are shown in Table 1.

[0047] Determination of sustained release of imidacloprid pesticide sustained-release agent: Accurately weigh 0.1g of imidacloprid pesticide sustained-release agent, add it to 100mL deionized water with a pH va...

Embodiment 3

[0049] This example provides a preparation method of a pesticide slow-release agent. The method first modifies wheat straw with phytic acid, and then adsorbs the pesticide onto the phytic acid-modified wheat straw, which specifically includes the following steps:

[0050] Step 1, wheat straw pretreatment: same as Step 1 of Example 1.

[0051] Step 2, preparation of phytic acid-modified wheat straw: same as Step 2 of Example 1.

[0052] Step 3, preparation of imidacloprid pesticide slow release agent: same as Step 3 of Example 1.

[0053] The concentration of imidacloprid in the filtrate was measured by ultraviolet-visible spectrophotometer, and the adsorption amount of imidacloprid on phytic acid modified wheat straw was calculated. The results are shown in Table 1.

[0054] Determination of sustained release of imidacloprid pesticide sustained-release agent: accurately weigh 0.1g of imidacloprid pesticide sustained-release agent, add to 100mL deionized water with adjusted p...

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Abstract

The invention provides a pesticide slow-release agent and a preparation method thereof. The preparation method includes the steps: firstly, performing phytic acid modification for straws; secondly, enabling pesticides to adsorb on phytic acid modified straws. A preparation process of the phytic acid modified straws includes the steps: crushing the straws; performing acidification for the crushed straws; washing; cleaning to obtain preset straws; mixing and reacting 75%-90% of N, N-dimethyl formamide, 3%-10% of preset straws, 2%-6% of urea and 3%-10% of phytic acid to obtain the phytic acid modified straws. According to the pesticide slow-release agent, by the aid of modified products of the straws, imidacloprid pesticide can be effectively adsorbed, release of the imidacloprid pesticide is effectively controlled, and the pesticide slow-release agent is wide in raw material resource, simple in preparation process, short in period, high in adsorbing capacity and excellent in controlled release performance.

Description

technical field [0001] The invention belongs to the field of pesticides and relates to a pesticide slow-release agent, in particular to a pesticide slow-release agent and a preparation method thereof. Background technique [0002] Imidacloprid is a nitromethylene-type systemic insecticide, and it is the action body of nicotinic acetylcholine receptors. It interferes with the motor nervous system of pests and causes chemical signal transmission to fail. There is no problem of cross-resistance. It is mainly used to control piercing-sucking mouthparts pests. Imidacloprid is a new generation of chlorinated nicotine insecticide. Because of its broad-spectrum, high efficiency, low toxicity and low residue, it is difficult for pests to develop resistance. It is safe to humans, animals, plants and natural enemies, and has contact, stomach toxicity and systemic absorption. Multiple efficacy, good quick-acting, high control effect one day after application, and the residual period is...

Claims

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Application Information

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IPC IPC(8): A01N25/08A01N51/00A01P7/04
CPCA01N25/08A01N51/00
Inventor 白波秦培山冯蝶静蔡漪
Owner CHANGAN UNIV
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