Oil-smoke agent of microbial pesticide of bacillus and preparation method thereof

Abstract

The invention relates to an oil-smoke agent of a microbial pesticide of bacillus and a preparation method thereof. The oil-smoke agent is a product prepared by the steps of: shearing and uniformly dispersing bacillus thuringiensis subsp kurstaki raw powder, a dispersing agent, a thickening agent, an emulsifying agent, an antifreezing agent and a solvent; and then grounding by a grinder until 90 percent of materials achieve fineness less than 5 micrometers; an finally uniformly stirring. When in use, the oil-smoke agent is quantificationally delivered into a fuming pipe to be mixed with high-temperature high-speed air flows into micrometer-grade droplets which are sprayed out by a smoke sprayer; and the micrometer-grade droplets are uniformly precipitated in different direction of each position of a target, thereby the oil-smoke agent has good precipitation effect and high preventing and curing efficiency; in addition, the oil-smoke agent has strong adhering force for the target, high rain washing resisting capacity, high affinity between the droplets and the target, longer duration, economic medication, convenient use, quick effect, sprays without adding water and is especially suitable for the forest pest control of forest zones with inconvenient traffic, few water source, precipitous hillsides and high woods and the forest pest control of closed conditions, i.e. greenhouses,storages, orchards, and the like.

Description

Technical field

[0001] The invention relates to a type of bacillus microbial pesticide oil smoke agent and a preparation method thereof. Background technique

[0002] Bacillus is currently the most researched, most productive, and most widely used microbial pesticide at home and abroad. It protects some important agricultural and forestry pests, such as Plutella xylostella, Pieris rapae, Cnaphalocrocis medinalis, pine caterpillar, American white moth, and poplar. Fan boat moth, gypsy moth and looper, powdery mildew, bacterial wilt and fusarium wilt have good control effects. At present, the main formulations of this type of product are water suspension and wettable powder. These two formulations need to be diluted with water during use, but there is a lack of water in many places, especially in mountainous and arid areas, and artificial ground control in forest areas is time-consuming and labor-intensive. , The difficulty is greater, the effect is not ideal, and the use of aircr...

Examples

Embodiment 1

[0018] Example 1. Weigh 2 kg of fumed silica, add it to 498 kg of diesel oil, quickly shear and disperse, then add 30 kg of sodium lignosulfonate, 50 kg of sorbate, 50 kg of castor oil polyoxyethylene ether, and 20 kg of ethylene glycol. The original powder of Bacillus thuringiensis subsp. Kustak is 350kg, stirred and dispersed uniformly, and is ground by a horizontal sand mill. After particle size testing, more than 90% of the material has a fineness of less than 5μm. Stop grinding and stir evenly. The package is finished.

Embodiment 2

[0019] Example 2. Weigh 10kg of bentonite and 20kg of xanthan gum, add them to a mixed solvent of 200kg of castor oil and 400kg of white oil, quickly shear and disperse, then add 20kg of MF, 20kg of pulverized powder, and 50kg of alkyl alcohol polyoxyethylene ether , Alkylphenol polyoxyethylene ether 50kg, ethylene glycol 30kg, Bacillus thuringiensis subsp. Israel powder 200kg, stirred and dispersed evenly, ground by horizontal sand mill, through particle size testing, more than 90% of the material has a fineness of 5μm Below, stop grinding and stir evenly, and the package is the finished product.

Embodiment 3

[0020] Example 3. Weigh 20 kg of bentonite, add it to a mixed solvent of 330 kg of soybean oil and 380 kg of diesel, quickly shear and disperse, then add 10 kg of sodium lignosulfonate, 20 kg of NNO, 50 kg of alkyl alcohol polyoxyethylene ether, and polyoxyethylene castor oil. 50kg of vinyl ether, 40kg of ethylene glycol, 100kg of Bacillus thuringiensis subsp. Ayusawa raw powder, stir and disperse evenly, and grind by a horizontal sand mill. After particle size testing, more than 90% of the material has a fineness of less than 5μm, stop grinding and Stir evenly and package as finished product.

Technical field

[0001] The invention relates to a type of bacillus microbial pesticide oil smoke agent and a preparation method thereof. Background technique

[0002] Bacillus is currently the most researched, most productive, and most widely used microbial pesticide at home and abroad. It protects some important agricultural and forestry pests, such as Plutella xylostella, Pieris rapae, Cnaphalocrocis medinalis, pine caterpillar, American white moth, and poplar. Fan boat moth, gypsy moth and looper, powdery mildew, bacterial wilt and fusarium wilt have good control effects. At present, the main formulations of this type of product are water suspension and wettable powder. These two formulations need to be diluted with water during use, but there is a lack of water in many places, especially in mountainous and arid areas, and artificial ground control in forest areas is time-consuming and labor-intensive. , The difficulty is greater, the effect is not ideal, and the use of aircr...

Examples

Embodiment 1

[0018] Example 1. Weigh 2 kg of fumed silica, add it to 498 kg of diesel oil, quickly shear and disperse, then add 30 kg of sodium lignosulfonate, 50 kg of sorbate, 50 kg of castor oil polyoxyethylene ether, and 20 kg of ethylene glycol. The original powder of Bacillus thuringiensis subsp. Kustak is 350kg, stirred and dispersed uniformly, and is ground by a horizontal sand mill. After particle size testing, more than 90% of the material has a fineness of less than 5μm. Stop grinding and stir evenly. The package is finished.

Embodiment 2

[0019] Example 2. Weigh 10kg of bentonite and 20kg of xanthan gum, add them to a mixed solvent of 200kg of castor oil and 400kg of white oil, quickly shear and disperse, then add 20kg of MF, 20kg of pulverized powder, and 50kg of alkyl alcohol polyoxyethylene ether , Alkylphenol polyoxyethylene ether 50kg, ethylene glycol 30kg, Bacillus thuringiensis subsp. Israel powder 200kg, stirred and dispersed evenly, ground by horizontal sand mill, through particle size testing, more than 90% of the material has a fineness of 5μm Below, stop grinding and stir evenly, and the package is the finished product.

Embodiment 3

[0020] Example 3. Weigh 20 kg of bentonite, add it to a mixed solvent of 330 kg of soybean oil and 380 kg of diesel, quickly shear and disperse, then add 10 kg of sodium lignosulfonate, 20 kg of NNO, 50 kg of alkyl alcohol polyoxyethylene ether, and polyoxyethylene castor oil. 50kg of vinyl ether, 40kg of ethylene glycol, 100kg of Bacillus thuringiensis subsp. Ayusawa raw powder, stir and disperse evenly, and grind by a horizontal sand mill. After particle size testing, more than 90% of the material has a fineness of less than 5μm, stop grinding and Stir evenly and package as finished product.