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A kind of slow and controlled release pesticide granule and preparation method thereof

A technology of controlled-release pesticides and granules, applied in the field of pesticides, can solve the problems of single structure of slow-controlled pesticide granules, and achieve the effects of reducing the number of spraying times, being environmentally friendly, and good slow-release effects

Active Publication Date: 2017-08-04
ZHANJIANG SUGARCANE RES CENT GUANGZHOU SUGARCANE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the slow and controlled release pesticide granules prepared by this method have a single structure, and each component is evenly distributed. The actual need to achieve gradient release of pesticide active ingredients

Method used

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  • A kind of slow and controlled release pesticide granule and preparation method thereof
  • A kind of slow and controlled release pesticide granule and preparation method thereof
  • A kind of slow and controlled release pesticide granule and preparation method thereof

Examples

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preparation example Construction

[0070] The present invention provides the preparation method of the sustained and controlled release pesticide granule described in the above technical scheme, comprising the following steps:

[0071] (1) Mixing pesticide active ingredients, modified phosphogypsum, organic feces, biomass materials, auxiliary agents and fillers to obtain a mixed material;

[0072] (2) granulate the mixed material obtained in the step (1) after being humidified to 20% to 30%, to obtain the slow-release core layer and the remaining powder;

[0073] (3) Throwing the slow-release core layer obtained in the step (2) and the remaining powder into a circle, and the remaining powder is coated on the surface of the slow-release core layer to form a slow-controlled release pesticide granule.

[0074] The invention mixes the pesticide active ingredients, modified phosphogypsum, organic feces, biomass materials, auxiliary agents and fillers to obtain a mixed material. In the present invention, there are n...

Embodiment 1

[0085] Preparation of 5% monosultap·chlorpyrifos slow-release pesticide granules

[0086] Preparation of modified phosphogypsum: mixing phosphogypsum with lime water for neutralization reaction to obtain modified phosphogypsum with a pH value of 5. Then put it into an oven, the temperature of the oven is 170° C., bake for 3 hours, and measure the water content of the modified phosphogypsum to be below 10%. The dried modified phosphogypsum is pulverized, and then passed through a 40-mesh sieve to obtain the under-sieve part.

[0087] Preparation of 5% monosultap · chlorpyrifos slow-release pesticide granules: by weight percentage, get 2.5% monosultap original drug, 2.5% chlorpyrifos original drug, 70% modified phosphogypsum, 9% organic chicken Feces, 3% bagasse, 0.5% sodium lauryl sulfate, and kaolin to make up the balance to 100%, mix well and humidify to 25%. The obtained mixture is granulated by a horizontal centrifugal extrusion granulator, rounded by a rounder, then drie...

Embodiment 2

[0089] Preparation of 5% monosultap·chlorpyrifos slow-release pesticide granules

[0090] Preparation of modified phosphogypsum: mixing phosphogypsum with lime water for neutralization reaction to obtain modified phosphogypsum with a pH value of 6. Then put it into an oven, the temperature of the oven is 160° C., bake for 2 hours, and measure the water content of the modified phosphogypsum to be below 10%. The dried modified phosphogypsum is pulverized, and then passed through a 40-mesh sieve to obtain the under-sieve part.

[0091] Preparation of 5% monosultap · chlorpyrifos slow and controlled release pesticide granules: by weight percentage, get 2.5% monosultap original drug, 2.5% chlorpyrifos original drug, 50% modified phosphogypsum, 9% organic chicken Feces, 3% bagasse, 0.5% sodium lauryl sulfate, and kaolin to make up the balance to 100%, mix well and humidify to 25%. The obtained mixture is granulated by a horizontal centrifugal extrusion granulator, rounded by a rou...

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Abstract

The present invention provides a kind of sustained and controlled release pesticide granule, which comprises inner and outer two-layer structures in structure, which are respectively the slow release core layer of the core part and the quick release layer coated outside the slow release core layer; the composition includes the following Components: 0.01wt%-10wt% pesticide active ingredients, 40wt%-80wt% modified phosphogypsum, 5wt%-30wt% organic manure, 0.1wt%-20wt% biomass materials, 0.1wt%-2wt% additives, The balance is filler. In the invention, the components are mixed, humidified and then granulated to obtain a slow-release core layer and remaining powder, the product is rounded, and the remaining powder is coated on the surface of the slow-release core layer to form a slow-release and controlled-release pesticide granule. The slow and controlled-release pesticide granule prepared by the invention can realize the gradient release of the active ingredients of the pesticide according to the actual needs of crop disease and insect pest control. On the basis of meeting the requirements of crop pest control, there will be no problem of phytotoxicity to crops. At the same time, the active ingredients of pesticides last for a long time, which can reduce the number of pesticide applications, save pesticide and labor costs, and be environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a slow and controlled release pesticide granule and a preparation method thereof. Background technique [0002] According to the release characteristics of the active ingredients of pesticides, pesticides can be divided into two categories: free-release conventional pesticides and controlled-release slow-release pesticides. Conventional pesticides are mainly coated with river sand, coal cinders, soil balls, stone powder, etc., and the active ingredients are only adsorbed on the surface of the carrier, resulting in a loss rate of 60% to 90% of the active ingredients of the pesticide, and an effective utilization rate of only 10% to 10%. 40%, which not only causes economic waste, but also poses a serious threat to human health and the ecological environment. In addition, the above carriers are non-renewable resources. With the continuous consumption of resources, the price is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/12A01N57/16A01N41/02A01P7/04
Inventor 杨俊贤谢江江
Owner ZHANJIANG SUGARCANE RES CENT GUANGZHOU SUGARCANE RES INST
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