Agricultural effervescent granules and preparation method and application thereof

Abstract

The invention belongs to agricultural effervescent granules, and relates to the effervescent granules containing surfactants and a preparation method and application thereof. The agricultural effervescent granules are mainly mixed with pesticide preparations or fertilizers for use, do not comprise active ingredients of a pesticide and are used as an auxiliary agent of the pesticide preparations or fertilizers. The agricultural effervescent granules comprise an acid source, a carbonate source and 40 to 90 weight percent of surfactants, wherein the weight percentage of the surfactant is more than 40. One preferred scheme of the invention is that: one of the surfactants is an organosilicon surfactant. The preparation method of the invention comprises the steps of weighing, mixing, crushing, granulating and drying the ingredients. The application of the effervescent granules of the invention is that: the effervescent granules are mixed with the pesticide preparations or the fertilizers for use; and the proportion of the effervescent granules to the pesticide preparations or the fertilizers is 1-1,999:1,999-1. The agricultural water dispersible granules of the invention are mixed with the pesticide preparations or fertilizers in use, so the functions of diluting, reducing the content of the active ingredients, improving the suspensibility of the active ingredients, accelerating dissolution, dispersing, wetting, permeating, thickening, defoaming, filming and adhering and the like are realized, the ratio of absorbing and utilizing the active ingredients by crops is improved, and the pesticide and fertilizer pollution on environment is reduced.

Description

technical field [0001] The invention belongs to agricultural effervescent granules, and relates to an effervescent granule containing a surfactant and its preparation method and application. It is mainly used for mixing with pesticide preparations or fertilizers, does not contain active ingredients of pesticides, and is used as a pesticide preparation or fertilizer. Auxiliary use. Background technique [0002] The object of the present invention is to provide an agricultural effervescent granule with high efficiency, rapid dissolution (dispersion) in water and high stability. Another object of the present invention is to provide the preparation method and application of the above-mentioned agricultural effervescent granules. [0003] In the field of agriculture, pesticide formulations and fertilizers must meet a variety of practical constraints. In addition to providing excellent properties such as insecticide, fungicide, weed control, regulation of plant growth, and suppl...

AI Technical Summary

Problems solved by technology

[0005] 1. Poor wettability

The content and types of surfactants in pesticide preparations or fertilizers are limited. First, due to the limitation of active ingredient content, or based on manufacturing cost considerations, the content of surfactants in products is relatively low, usually between 5- About 50%, the amount of some high-efficiency pesticides per hectare is very low, resulting in a decrease in the amount of surfactants therein; and in practical applications, the dilution factor is often 500-5000 times, and the surface of the diluted liquid medicine or fertilizer The content of the active agent is lower, and its effect of reducing surface tension is very limited, resulting in poor wettability and permeability of the liquid medicine or fertilizer to the target crops, and a large amount of liquid medicine or fertilizer rolls down on the ground during application and cannot play a role , resulting in a great waste of active ingredients and environmental pollution

Second, the surfactants in pesticide preparations or fertilizers must meet various requirements such as wettability, permeability, dispersibility, stability, etc., and two or more surfactants with different properties are often used at the same time, resulting in The content of surfactants with good wetting properties is seriously insufficient

Third, due to the chemical properties of the active ingredients, some excellent surfactants cannot be added to the preparation due to their special physical and chemical properties.

For example, silicone surfactants, which have been widely used in agriculture, have excellent wetting, penetration, and diffusion properties, are usually liquid, and are stable under neutral or near-neutral conditions, but in acidic or alkaline The presence of water will lead to the decomposition of silicone, which limits the application of this type of surfactant, that is, in some acidic, alkaline or water-existing pesticide formulations or fertilizer products, silicone surfactants cannot be directly added , so in fact, surfactants are often packaged separately, sold with pesticide preparations or fertilizer products, or sold separately, and mixed on site when used

[0006] 2. Poor permeability

The quality of penetrating performance mainly depends on the type and quantity of surfactants, and is also limited by the content and chemical properties of active ingredients in pesticides or fertilizers. Many excellent surfactants may not be used in sufficient amounts, or because of physical and chemical properties, they cannot Added to pesticides or fertilizers, resulting in poor permeability

[0007] 3. Poor dispersion

[0009] (1) Because most of the surfactants are liquid or paste, it is difficult to process them into solid preparations, and a small part of them are processed into powders, and the dust will fly during processing and use, which will cause great pollution to the environment and limit their use in pesticides or solid fertilizers. Application in preparation

[0010] (2) For pesticides and fertilizers with powdery or granular appearance, it is difficult to directly add liquid surfactants into them during production. Active agent, which will cause poor appearance of the product, such as poor fluidity, sticky product, poor dispersibility, agglomeration, etc.

[0011] The agricultural effervescent granules of the present invention, i.e. the effervescent granules that contain surfactants and are used in pesticide preparations or fertilizers to play an auxiliary role, have no related products and reports