Agricultural organic silicon active surfactants (usually referring to agricultural organic silicon surfactants) are a type of highly efficient additives with polyether modified siloxanes as the core component. In agricultural production, they significantly improve the utilization and effectiveness of agricultural products such as pesticides and fertilizers by reducing surface tension, enhancing drug permeability, and resistance to rainwater erosion. The following provides a detailed analysis of the mechanism of action, application advantages, usage methods, and precautions:


1、 Mechanism of action
Reduce surface tension:
The unique molecular structure of organosilicon surfactants, such as the T-shaped umbrella structure, enables them to reduce the surface tension of water to below 21 mN/m, significantly lower than traditional surfactants (about 30-40 mN/m). This characteristic enables the medicinal solution to quickly wet plant leaves, insect surfaces, and even wax layers that are difficult to wet (such as rice leaves and lotus leaves), thereby enhancing the adhesion and coverage of the medicinal solution.
Promote penetration and absorption:
By reducing interfacial resistance, the pesticide solution can penetrate plant stomata, pest surfaces, or weed epidermis more quickly, enhancing the systemic and conductive properties of the pesticide. For example, in the prevention and control of rice leaf rollers, the addition of organic silicon additives can allow the medicinal solution to penetrate the insect bud and directly act on the pests, reducing the loss of medicinal solution caused by leaf curling.
Resistant to rainwater erosion:
After enhancing the permeability of the medicinal solution, a more durable medicinal film can be formed on the surface of the plant. Even if it encounters rainfall, the medicinal solution is not easily washed away, thereby prolonging the efficacy period.
2、 Application advantages
Improve pesticide utilization rate:
In the traditional spray, only 20% -30% of the solution can attach to the target, while the organosilicon additive can increase the attachment rate to more than 80%, significantly reducing pesticide waste. For example, when using 48% chlorpyrifos emulsion to control rice leaf rollers, adding 0.05% organic silicon additive can reduce the water consumption per acre from 45 kilograms to 15 kilograms, while achieving the same control effect.
Efficiency increase and reduction:
By enhancing the permeability of the medication, pesticide usage can be reduced by 30% -50%. For example, adding organic silicon adjuvants to herbicides can increase the absorption rate of weeds by 2-3 times, resulting in more thorough weed death.
Expand application scope:
Suitable for various agricultural products such as insecticides, fungicides, herbicides, foliar fertilizers, plant growth regulators, etc., especially effective against systemic pesticides such as imidacloprid and glyphosate.
3、 Usage method
Add ratio:
Insecticide: 0.025% -0.1% (diluted 1000-4000 times)
Fungicide: 0.015% -0.05% (diluted 2000-7000 times)
Herbicide: 0.025% -0.15% (diluted 700-4000 times)
Foliar fertilizer/plant growth regulator: 0.025% -0.05% (diluted 2000-4000 times)
Usage steps:
Ready to use: Mix the organic silicon additive with water in proportion, add the agent, stir thoroughly, and spray within 4 hours.
Spray technology: use a fine nozzle, low flow, high pressure spray to avoid drift of liquid medicine.
Environmental conditions: Avoid using it at high temperatures (>35 ℃), when the leaf wax is thin, or when the drug itself has strong permeability, to prevent drug damage.
4、 Precautions
Compatibility:
Organic silicon additives can be mixed with most pesticides, but it is necessary to avoid mixing with strong acids, strong bases, or agents with high metal ion content to prevent decomposition and failure.
Security:
Strictly follow the recommended dosage to avoid excessive use that may cause drug damage (such as leaf burns and growth inhibition).
Wear protective equipment during operation to avoid contact with skin and eyes.
Environmental adaptability:
Reduce the dosage under high temperature or drought conditions to prevent the concentration of the medicine from evaporating too quickly.
During the rainy season, the dosage can be appropriately increased to enhance the ability to withstand rainwater erosion.