CN-121970758-A - Benzene fluorine bacterium Azole composite pesticide composition

Abstract

The invention belongs to the field of pesticides, and particularly relates to a benzovindiflupyr composite pesticide composition which comprises 1-20% of benzovindiflupyr and 1-10% of quaternary ammonium salt modified nano zinc oxide calculated by zinc element content by mass percent, wherein the quaternary ammonium salt modified nano zinc oxide is nano zinc oxide subjected to surface modification by a specific long-chain quaternary ammonium salt and is prepared by a coprecipitation-hydrothermal method. The composite pesticide composition expands the bactericidal spectrum of the pesticide, and not only prevents and treats fungal diseases, but also prevents and treats bacterial diseases.

Inventors

• HUANG ZIYANG
• WANG QING
• Gu Weihang
• XIONG HUI
• SHEN LANLAN
• SHANG QIAN
• Hui Tuoping
• QIN LONG
• Dang Yunfu
• HUANG HAIYAN
• YU SHENLUAN
• QIAN ZHIGANG
• ZHOU SHUGUANG
• MA HENGBO
• ZHAN LINLIN

Assignees

• 浙江新安化工集团股份有限公司

Dates

Publication Date

20260505

Application Date

20260206

Claims (6)

1. 1. The benzovindiflupyr composite pesticide composition is characterized by comprising 1-20% of benzovindiflupyr and 1-10% of quaternary ammonium salt modified nano zinc oxide calculated by zinc element content in percentage by mass, wherein the quaternary ammonium salt modified nano zinc oxide is nano zinc oxide subjected to surface modification by long-chain quaternary ammonium salt and is prepared by a coprecipitation-hydrothermal method; The long-chain quaternary ammonium salt is selected from one or more of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, dodecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, tetradecyltrimethylammonium bromide, octadecyltrimethylammonium chloride, lauryl betaine, coco carboxylic betaine, hexadecyl carboxybetaine or polydiallyl dimethyl ammonium chloride.
2. 2. The benzovindiflupyr composite pesticide composition of claim 1, further comprising other bactericides selected from one or more combinations of cyproconazole, prothioconazole, penconazole, azoxystrobin, fluopyram, pyraclostrobin.
3. 3. The benzovindiflupyr composite pesticide composition of claim 2, wherein the other bactericides are 1% -20% by mass.
4. 4. The benzovindiflupyr composite pesticide composition according to any one of claims 1-3, wherein the preparation method of the quaternary ammonium salt modified nano zinc oxide is characterized in that zinc salt and the long-chain quaternary ammonium salt are mixed and dissolved in water, zinc hydroxide is obtained through a coprecipitation method, then the obtained mixture is transferred into a high-pressure reaction kettle, and hydrothermal reaction is carried out at 140-180 ℃ to obtain the quaternary ammonium salt modified nano zinc oxide, wherein the molar ratio of zinc element in the zinc salt to the quaternary ammonium salt is 1:0.3-0.6.
5. 5. The benzovindiflupyr composite pesticide composition according to any one of claims 1-3, wherein the benzovindiflupyr composite pesticide composition is in a suspension formulation, and further comprises, by mass, 5% -15% of a wetting dispersant, 0.5% -3% of a thickener, 0.05% -0.5% of a defoaming agent, 0.01% -0.4% of a preservative, 0.5% -5% of an antifreezing agent, and the balance of water.
6. 6. A method for controlling plant diseases, characterized in that the benzovindiflupyr composite pesticide composition as claimed in any one of claims 1 to 5 is applied to plants to be controlled or to the locus where it grows.

Description

Benzene fluorine bacterium Azole composite pesticide composition Technical Field The invention belongs to the field of pesticides, and particularly relates to a benzovindiflupyr composite pesticide composition. Background Benzovindiflupyr (benzovindiflupyr) is a class of SDHI (mitochondrial complex II inhibitors) that selectively inhibits the ubiquinone binding site of pathogenic mitochondrial complex II, interfering with energy metabolism and inducing cell death. The compound has systemic conductivity and good penetrating property of a wax layer, has good control effect on diseases such as powdery mildew, rust disease, leaf blight, gray mold and the like on various crops, has single action target point, and has the risk of inducing resistance after single administration for a long time. Therefore, in practical application, benzovindiflupyr is often compounded with bactericides with different action mechanisms such as cyproconazole, prothioconazole, penconazole, azoxystrobin, fluopyram, pyraclostrobin and the like, so that the expansion of a prevention and control spectrum is realized, and the development of resistance is delayed to a certain extent. Nano metal oxides are an important class of inorganic antibacterial materials, and the antibacterial mechanism of the nano metal oxides comprises that Reactive Oxygen Species (ROS) are generated to cause peroxidation of membrane lipid, physical adsorption damage, physiological metabolism interference caused by metal ion release and the like. In the existing compound system of benzovindiflupyr, the sterilization effect still mainly depends on specific biochemical targets such as mitochondrial respiratory inhibition, sterol biosynthesis inhibition and the like, and compared with the specific biological targets, the nano metal oxide can cause nonspecific structural damage through direct contact with pathogenic bacteria cell membranes or cell walls, so that additional physical-chemical stress is formed on pathogenic bacteria. The organic bactericide and the nano metal oxide are compounded, and the interface property of the organic bactericide is regulated and controlled especially by surface modification means such as quaternary ammonium salt, so that a multi-target synergistic system is hopeful to be constructed, the risk of pathogen resistance is further reduced, and the overall control effect is improved. However, related reports of systematic collaborative compounding of benzovindiflupyr and quaternary ammonium salt modified nano metal oxide are not yet found in the prior published literature and patent. Therefore, the development of the composite composition of the benzovindiflupyr and the quaternary ammonium salt modified nano metal oxide has important research significance and application value in the aspects of improving the bactericidal activity, delaying the resistance generation and realizing the product differentiation. Disclosure of Invention The invention aims to fill the blank of the prior art and provides a benzovindiflupyr composite pesticide composition, which is prepared by systematically compounding benzovindiflupyr and specific long-chain quaternary ammonium salt modified nano zinc oxide for the first time, and is not simply and physically mixed, so that a stable composite system is constructed, and the technical effects of broad spectrum, synergy, stability and decrement are realized. In order to achieve the technical effect, the invention adopts the technical proposal as follows: The benzovindiflupyr composite pesticide composition comprises 1-20% of benzovindiflupyr and 1-10% of quaternary ammonium salt modified nano zinc oxide calculated by zinc element content in percentage by mass, wherein the quaternary ammonium salt modified nano zinc oxide is nano zinc oxide subjected to surface modification by long-chain quaternary ammonium salt and is prepared by a coprecipitation-hydrothermal method; The long-chain quaternary ammonium salt is selected from one or more of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, dodecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, tetradecyltrimethylammonium bromide, octadecyltrimethylammonium chloride, lauryl betaine, coco carboxylic betaine, hexadecyl carboxybetaine or polydiallyl dimethyl ammonium chloride. As an embodiment, the benzovindiflupyr composite pesticide composition further comprises one or more other bactericides selected from cyproconazole, prothioconazole, penconazole, azoxystrobin, fluopyram and pyraclostrobin. As an implementation case, the other bactericides are 1% -20% by mass. The preparation method of the quaternary ammonium salt modified nano zinc oxide comprises the steps of mixing zinc salt and long-chain quaternary ammonium salt, dissolving the zinc salt and the long-chain quaternary ammonium salt in water, obtaining zinc hydroxide through a coprecipitation method, transferring the zinc hydroxide into a high-pressure reaction kettle, and carrying out