Composition for controlling white moth by helicopter and preparation method thereof

Abstract

The invention belongs to the technical field of agriculture, and particularly discloses a composition used for helicopter spraying and control of white moth and a preparation method thereof. The weight ratio of the active component A to the active component B is 0.5:1.5 to 1.5:29.5, the active component A is Bacillus thuringiensis, and the active component B is Any one of tebufenozide, methoxyfenozide and lufenuron, the active component A and the active component B account for 2% to 30% of the total weight of the composition, and the rest are auxiliary components. The composition and preparation method of the present invention is used for helicopter spraying to control and control the American white moth, can effectively prevent or control the American white moth, is friendly to the environment, relatively safe for special breeding such as bees and silkworms, and is suitable for ultra-low volume spraying by helicopters. It is suitable for use in arid areas, the spraying area is increased, the number of helicopter take-offs and landings is reduced, the adhesion of the agent on the surface of the plant is high, and it is resistant to rain erosion.

Description

(1) Technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a composition for controlling white moth by helicopter and a preparation method thereof. (2) Background technology [0002] American white moth is a worldwide quarantine pest. It is also the only pest that is listed as a quarantine object by agriculture and forestry in my country. It is currently known that it can threaten more than 300 agricultural and forestry plants. It has great harm, rapid spread, and suitable areas. Wide range, large breeding capacity, miscellaneous food habits and so on. The American white moth can naturally spread 35-40km per year. A female moth can reproduce three generations a year, laying more than 1,800 eggs at most, and the leaves are eaten within a few days during the outbreak. Since the American white moth invaded my country in the last century, it has gradually become the main pest harmful to the forestry in the central and eas...

AI Technical Summary

Problems solved by technology

Traditional control methods can hardly effectively control its large-scale and rapid spread. However, the helicopter spraying pesticide control technology has high efficiency, wide applicability, low cost, strong ability to deal with emergencies, and is conducive to eliminating sudden and explosive pests, etc. advantages, and has become the main means of controlling the rapid spread of the American white moth

[0003] At present, the pesticides used in domestic aerial control of agricultural and forestry pests basically come from commercially available conventional pesticides, and commercially available conventional pesticides often encounter the following problems in the process of spraying pesticides by helicopter: spraying with solid preparations such as wettable powder and water-dispersible granules often encounters problems due to nozzle The phenomenon of blocking and unable to apply pesticides normally; the use of pesticides such as emulsifiable concentrates that contain more organic solvents often encounters the phenomenon of corrosion of equipment; although the formulations such as water suspension concentrates, water formulations, and water emulsions can meet the requirements of flying prevention, they are not effective in spraying. During the process, because the droplets are too fine, the evaporation and drift are too fast, which is very likely to cause the waste of medicine and the occurrence of secondary disasters.

For example, emamectin benzoate or beta-cypermethrin are widely used due to their high activity against white moth. As a result, in the past five years, while flying against the American white moth, it has caused extremely heavy losses to silkworm breeding areas, especially in central Shandong, southern Shandong, and parts of northern Jiangsu. And the phenomenon of light

Moreover, diflubenzuron, matrine, and Bacillus thuringiensis have very little effect on the outbreak of white moth, and the leaves are often eaten before the efficacy of the medicine is fully exerted, and diflubenzuron has been continuously used on a large scale for several years. Use, the American white moth in some areas has developed resistance to the drug, which reduces the activity of diflubenzuron and fails to achieve the desired effect.

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