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Composite aggregate releasing agent, and preparation method and application thereof

A release agent and granule technology, applied in botany equipment and methods, applications, biocides, etc., can solve the problems of less than 20% effective utilization rate, environmental pollution caused by large dosage, and groundwater pollution, etc. The effect of less, reasonable process and high utilization rate

Inactive Publication Date: 2013-06-12
韩景良 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to reports, in developed countries abroad, chloropicrin and dichloropropene; chloropicrin and metamac are used as methyl bromide substitutes, and good results are received, but due to their dosage forms, the methods of use are mechanical irrigation and injection. , used to treat soil before planting crops, there are high toxicity to humans and animals, high operational technical requirements, and the more unfavorable factor is that the large amount of pesticides pollutes the environment
The effective dosage of 35% metabam is generally 100ml / m 2 , drip tank use, every 1000m 2 It needs more than 100kg, and it must be mixed with 20-40t of water, which is harmful to groundwater pollution
However, the effective utilization rate is less than 20%, and more than 80% of the toxic gas escapes into the atmosphere during the process of digging the soil, which seriously pollutes the air.

Method used

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  • Composite aggregate releasing agent, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The total content of active ingredients (including metamuc and chloropicrin) is 30wt%, and the sample preparation method of which the mass ratio of metamuc:chloropicrin is 1:2 is as follows:

[0037] ① Weigh 23.8g of 42% metamac saturated solution; mix it with 70g of activated carbon carrier, and mechanically granulate to make intermediate pellets with a particle size of 0.1-1.0cm and moisture <5%.

[0038] ②Put the product of step ① into the horizontal glass adsorber, the front port is connected to the outlet of the vaporizer, and the rear port is connected to the tail gas treatment bottle. The tail gas treatment bottle is filled with 2~4% sodium sulfite decomposition solution, and the chloropicrin stock solution (98~99% ) metered into the vaporizer; heat up to 70°C~the boiling point of chloropicrin, and the generated chloropicrin gas will undergo adsorption reaction with the product intermediate of step ①, the adsorption temperature is kept at 4~10°C, and the time is 4...

Embodiment 2

[0040] The total content of active ingredients (including metamuc and chloropicrin) is 30wt%, wherein the mass ratio of metamect: chloropicrin is 2:1. The sample preparation method is as follows: the device is the same as in Example 1

[0041] ①Weigh 23.8g of 42% metamac saturated solution; mix it with 35g of activated carbon carrier, and mechanically granulate to make intermediate pellets with a particle size of 0.1-1.0cm and moisture <5%.

[0042] ②Put the product of step ① into the horizontal glass adsorber, the front port is connected to the outlet of the vaporizer, and the rear port is connected to the tail gas treatment bottle. The tail gas treatment bottle is filled with 2~4% sodium sulfite decomposition solution, and the chloropicrin stock solution (98~99% ) metered into the vaporizer; heated to 70 ° C ~ chloropicrin boiling point, the generated chloropicrin gas and the product intermediate of step ① for adsorption reaction, the adsorption temperature is maintained at 8...

Embodiment 3

[0044]This project has proved its practicability through a large number of experiments, now take the greenhouse cucumber experiment as an example, use the product prepared by the method described in the embodiment of the present invention 1 and 2 as a medicament (open the package during use, it has a slightly spicy taste, you can not use it) Protection); furrow application can be applied, the depth is 15~20cm, the distance between plants is 20~30cm, and the soil is solid. The active ingredients are released when the ground temperature is above 10°C, and then increase with the rise of the ground temperature until they are completely desorbed. 20 days after the treatment, the detection was performed in parallel three times, and a control group was set up at the same time. The control effect on cucumber wilt is shown in Table 1:

[0045] 1. Control effect on cucumber wilt

[0046]

[0047] Tests have proved that the control effect of the cucumbers in the four experimental grou...

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Abstract

The invention discloses a composite aggregate releasing agent, and a preparation method and application thereof. The preparation method comprises the following steps: weighing a metham water solution and an adsorbent carrier, evenly mixing, and granulating to prepare intermediate aggregates, wherein the mass ratio of the metham component to the adsorbent carrier is (1-2):(7-8); heating to gasify chloropicrin, performing adsorption reaction on the generated chloropicrin gas and the intermediate aggregates, and ensuring that the mass ratio of the chloropicrin, the metham and the adsorbent carrier in the final product is (1-2):(1-2):(7-8); and coating, and packaging to obtain the finished product, wherein the adsorbent carrier is at least one of a carbon molecular sieve, activated carbon and activated clay. For the product disclosed by the invention, the proportion and content of the active components can be regulated according to different control targets; and the product is wide in control spectrum, high in efficiency, low in toxicity, low in consumption, low in use cost and safe and convenient to apply, and has no environmental pressure. Thus, the invention has wide application ranges and application prospects.

Description

technical field [0001] The invention belongs to the technical field of solid dosage form pesticide manufacture, and in particular relates to a composite aggregate release agent and its preparation method and application. Background technique [0002] Chemical name of Mebam: Sodium N-Methyldithiocarbamate. It is a soil fumigant. It was developed by the American Ford Company in 1954 and has been widely used since then. The product sold in the market is 35% water formulation. Chloropicrin, chemical name: chloropicrin, is a halogenated hydrocarbon fumigant. As early as 1908, it was used as a fungicide (BPZ387). Long-term application practice has proved that Metabam has a good effect on controlling nematodes, but has a poor effect on soil-borne pathogens, while chloropicrin is the opposite. The present invention uses the synergistie effect of chemical reaction to mix the two compounds together to improve the comprehensive control effect. At the same time, the dosage form is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/14A01N47/08A01N25/08A01P3/00A01P5/00A01P1/00
Inventor 韩景良伊长君
Owner 韩景良
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