Tebuconazole-algae slow-release microcapsule fungicide and preparation method thereof

Abstract

The invention discloses a tebuconazole-algae slow-release microcapsule fungicide and a preparation method thereof. The algae is used as a carrier, and the original drug tebuconazole and a plant growth regulator are adsorbed by its physical adsorption, and a degradable polymer is added. Surfactants and stabilizers are mixed with micro-fertilizers after being solidified into capsules to obtain the tebuconazole-algae sustained-release microcapsule bactericide of the present invention, the weight ratio of each component of the bactericide is: 1 part of tebuconazole; 5-50 parts of algal powder; 0.6-1 part of surfactant; 0.5-1 part of degradable polymer compound; 1-3 parts of stabilizer; 1-2 parts of micro-fertilizer; 0.5-1 part of plant growth regulator. The fungicide of the present invention can effectively control the release, prolong the effective period and reduce the dosage, so as to be less toxic; it adopts the combination of pesticide and micro-fertilizer, and exerts the dual effects of fertilizing the field and plant protection; moreover, the raw materials of the present invention are easy to obtain and low in cost , the process is simple, the environment is friendly, and is suitable for industrial scale production.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, in particular to a tebuconazole-algae slow-release microcapsule fungicide and a preparation method thereof. Background technique [0002] Tebuconazole, English name Tebuconazole, structural formula is as follows: [0003] [0004] Its molecular formula is C 16 h 22 ClN 3 O, the molecular weight is 307.8. The pure product of tebuconazole is a colorless crystal with a melting point of 102.4°C to 104.7°C, a vapor pressure of 0.013mPa at 20°C, and a solubility of 20°C: water 3.2×10 -5 kg / L, dichloromethane>0.2kg / L, hexane<0.0001kg / L, isopropanol, toluene 0.05~0.1kg / L. Stability: Hydrolyzed DT at pH 4, 7 or 9 at 22°C 50 > 1 year. [0005] Tebuconazole is a triazole high-efficiency broad-spectrum systemic fungicide. It is an alcohol demethylation inhibitor, which can penetrate into plants and conduct in vivo. It has a wide antibacterial spectrum and low dosage. Tebuconazole inh...

AI Technical Summary

Problems solved by technology

[0006] At present, existing tebuconazole pesticide formulation is 43% suspension concentrate, 25% wettable powder and 80% water dispersible granule (Chinese patent CN101156578A), tebuconazole suspension seed coating (Chinese patent CN101133735A), wettable powder ( Chinese patent CN101133737A), these dosage forms are easily affected by factors such as heat, air, rain, soil, microorganisms and other chemical substances during the application process, resulting in the decomposition and loss of pesticides, making it difficult to exert super-efficient effects, and the dosage and frequency Increase year by year, cost increase

Due to the fine particles, the powder is easy to drift, and it will have adverse effects on the user and the surrounding environment during use.

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