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Preparation method of trunk-injecting microcapsule pesticide for controlling longhorn beetles on poplars

A manufacturing method and technology of microcapsules are applied in the fields of botanical equipment and methods, preservation of human or animal body, pesticides, etc., which can solve the problems of phytotoxicity, shortness, and need to inject 2-3 times a year, etc. To achieve the effect of saving prevention and control costs

Inactive Publication Date: 2016-08-24
NANTONG QINGANJIAN WATERLESS PRINTING & DYEING INST GENERAL PARTNER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The more effective control method is to punch holes in the roots of the trunk and inject pesticides. However, traditional pesticides are released quickly in the trunk, which is easy to cause phytotoxicity and has a short duration. It needs to be injected 2-3 times a year.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 30 kg of diflubenzuron, 20 kg of pyridacloprid and 90 kg of diesel oil, first use a colloid mill for circular grinding, then use a sand mill for grinding, and stop grinding when the pesticide particles are less than or equal to 3 microns.

[0026] Put the above-mentioned ground diflubenzuron 30kg, pyridacloprid 20kg and diesel oil 90kg into the high shear machine, then add dimethylformamide 10kg in the high shear machine, surfactant Tween 20# 10kg, octanoic acid 1kg of stannous, heated to 55°C, added 50kg of water, sheared and emulsified for half an hour, then added 280kg of polyvinyl alcohol aqueous solution with a concentration of 2wt%, stirred vigorously for 10 minutes, and reacted at a constant temperature of 55°C for 4 hours to make microcapsules and inject dry pesticides.

[0027] The microcapsules produced by the present embodiment are injected dry pesticide and select 10 poplars to test, wherein 2 of which the diameter at breast height is less than 15cm, 1 h...

Embodiment 2

[0034] Grind 20 kg of thiacloprid, 15 kg of diflubenzuron and 80 kg of benzyl benzoate with a sand mill so that the particle size of the pesticide is ≤3 microns.

[0035] Add the above-mentioned ground thiacloprid, diflubenzuron and benzyl benzoate into the mixing tank, then add dimethyl sulfoxide 8kg, surfactant Span 20#12kg and sodium dodecylbenzenesulfonate 2.5 kg, cinnamaldehyde 0.5kg, stannous octoate 1kg, KH-550 silane coupling agent 1kg, heat to 60°C, add water 50kg, emulsify vigorously for 30min, add 2wt% polyvinyl alcohol aqueous solution 300kg under stirring, react at constant temperature 55°C for 4h , adding ethylene glycol to prepare the microcapsule dry injection pesticide, wherein the volume of ethylene glycol accounts for 10% of the total volume of the microcapsule injection dry pesticide.

[0036] The microcapsule injection dried pesticide prepared in this example can continue to be used at -5°C.

[0037] The microcapsules produced by the present embodiment ar...

Embodiment 3

[0043] The present embodiment is basically the same as Embodiment 2, the difference being that 0.1 kg of ammonium persulfate was added while adding the polyvinyl alcohol aqueous solution.

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PUM

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Abstract

The invention provides a preparation method of a trunk-injecting microcapsule pesticide for controlling longhorn beetles on poplars. The preparation method specifically comprises steps as follows: (1), a chitinase inhibitor, artificially synthesized neonicotinoid insecticides and a dispersing agent are mixed and ground until the sizes of particles are smaller than or equal to 3 mu m; (2), the mixture obtained in the step (1) is added to a reaction kettle, an organic solvent, a surfactant and stannous octoate are added, the mixture is stirred uniformly, and a pesticide base body is prepared; (3), an aqueous solution of a microcapsule wall material is added to the reaction kettle, an encystation reaction is performed, and the trunk-injecting microcapsule pesticide is prepared. The trunk-injecting microcapsule pesticide prepared with the method can well control the longhorn beetles on the poplars.

Description

technical field [0001] The invention relates to a method for manufacturing a microcapsule-injected dry pesticide for preventing and controlling the poplar pest beetle, belonging to the field of pesticides in the chemical industry. Background technique [0002] Poplars are drought-resistant, tall and straight, and are one of the main tree species cultivated in my country's plantations. Poplars are also the main species in the Three North Protection Belt. More than 70% of the tree species in the highway forest belt in northern my country are poplar. Poplar longhorn beetle is a borer pest of Coleoptera. Long beetle larvae burrow and eat in the woody part of poplar, causing great harm. Because the poplar trees are tens of meters high, and the larvae of the longhorn beetle hide in the trunk, the pesticides are sprayed from the outside to prevent and control the longhorn beetle. The amount of pesticide used is high, the waste is serious, and the effective period is very short, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N51/00A01N47/34A01N47/40A01N47/30A01P7/04
CPCA01N25/28A01N47/30A01N47/34A01N47/40A01N51/00A01N2300/00
Inventor 仲伟德吴海陆嘉惠
Owner NANTONG QINGANJIAN WATERLESS PRINTING & DYEING INST GENERAL PARTNER
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