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Release-controlled medicine fertilizer composition and preparation method thereof

A technology of controlled release and composition, which is applied in the field of controlled-release medicinal fertilizer compositions, which can solve problems such as stratification or precipitation, difficulty in microcapsules, and weak systemic absorption, so as to improve utilization rate and fertilizer efficiency and herbicidal effect, the effect of reducing the frequency of fertilization and pesticide application

Inactive Publication Date: 2019-03-08
四川赛华睿科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its weak systemic absorption, it cannot kill the roots, so its duration is not long, and it is easy to turn green after a period of application.
The current sustained-release technology is usually prepared by encapsulating the active ingredient in microcapsules. The active ingredient is dispersed in the formulation medium in the form of microcapsules, and it is prone to stratification or precipitation when stored at high temperature or normal temperature for a long time.
And because glufosinate-ammonium itself is water-soluble, it is relatively difficult to be formulated into microcapsules

Method used

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  • Release-controlled medicine fertilizer composition and preparation method thereof
  • Release-controlled medicine fertilizer composition and preparation method thereof
  • Release-controlled medicine fertilizer composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A drug fertilizer composition with controlled release, consisting of the following raw materials in percentage: herbicide: 5% glufosinate-ammonium, fertilizer: 2% ammonium sulfate, 3% potassium dihydrogen phosphate, surfactant: 8% fat Alcohol polyoxyethylene ether sodium sulfate, 2% alkyl glycoside, photoinitiator 0.5% benzoin dimethyl ether, prepolymer: 5% epoxy acrylic acid, solvent: 74.5% distilled water.

[0030] This embodiment is a glufosinate-ammonium controlled-release medicinal fertilizer composition with a weight fraction of 5%.

Embodiment 2

[0032] A controlled-release medicinal fertilizer composition, consisting of the following percentages of raw materials: herbicide: 5% glufosinate-ammonium, fertilizer: 30% diammonium hydrogen phosphate, 10% potassium sulfate, surfactant: 3% fat Alcohol Sodium Sulfate and 7% Alkyl Glycoside, Photoinitiator: 3% Benzoin Butyl Ether, Prepolymer: 10% Urethane Acrylate, Solvent: 32% Distilled Water. This embodiment is a glufosinate-ammonium controlled-release medicinal fertilizer composition with a weight fraction of 5%.

[0033] The controlled release medicinal fertilizer composition of the present invention can be prepared according to the following method: add herbicide, fertilizer, prepolymer and solvent into the reactor at normal temperature, stir and mix evenly, heat to 50-70°C, stir for 60 ~90 minutes, then add the surfactant and photoinitiator and continue to stir and mix until the material is completely dissolved.

[0034] The time for adding surfactant and photoinitiator ...

Embodiment 3

[0037] A kind of preparation method of the medicinal fertilizer composition of a kind of control release, at normal temperature 10% glufosinate-ammonium, 5% urea, 5% ammonium sulfate, 20% potassium nitrate, 5% amino acid, 7% polyether acrylate and Add 30% distilled water into the reaction kettle for stirring and mixing, heat to 50°C, stir for 90 minutes, then add 10% surfactant fatty alcohol polyoxyethylene ether sodium sulfate, 2% betaine, 1% α-hydroxyalkyl Benzophenone and 5% ethylene glycol continued to stir and mix for 30 minutes until the material was completely dissolved to obtain a glufosinate-ammonium controlled-release medicinal fertilizer composition with a weight fraction of 10%.

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Abstract

The invention provides a release-controlled medicine fertilizer composition and a preparation method thereof. The medicine fertilizer composition is prepared from the following raw materials in percentage: 5 to 30 percent of weeding agents, 5 to 40 percent of fertilizers, 10 to 30 percent of surfactants, 0.5 to 3 percent of photoinitiators, 5 to 20 percent of prepolymers and the balance of solvents. The medicine fertilizer composition has the advantages that the medicine does not need to be prepared into a microcapsule preparation; and through the addition of the specific photoinitiator to bemixed with the prepolymers, medicine fertilizer can perform spontaneous reaction under the illumination condition after spraying use so as to form the medicine fertilizer composition with a slow-release effect. The medicine fertilizer active ingredient stability and effect-lasting period are improved.

Description

technical field [0001] The invention relates to a pesticide and fertilizer composition, belongs to the technical field of medicinal fertilizers, in particular to a controlled-release medicinal fertilizer composition and its application. Background technique [0002] With the development of the economy and the improvement of people's living standards, the area of ​​non-cultivated land in citrus orchards, peach orchards, vineyards and other orchards is increasing, and weeding on non-cultivated land has become one of the important aspects of herbicide use. Most of the weeding in orchards uses herbicides such as glyphosate and glufosinate-ammonium. Unlike pesticides or fungicides, herbicides are more commonly used in wasteland or woodland, and usually do not require additional fertilizers after use. With the increase of orchard planting area, the demand for the use of herbicides in orchards is gradually increasing. In addition to weeding needs, orchards also need to supplement...

Claims

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Application Information

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IPC IPC(8): C05G3/00A01N57/20A01P13/00A01M21/04
CPCA01M21/043A01N57/20C05B7/00C05C3/00C05G3/00C05G5/20C05G5/23C05D1/02C05C5/02C05C9/00C05C11/00
Inventor 严寒唐齐李舟廖辉云肖蒙
Owner 四川赛华睿科技有限责任公司
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