A kind of paddy field herbicide large granule and preparation method thereof

A large granule, paddy field technology, applied in the field of pesticides, can solve the problems of crop damage, strict packaging requirements, effervescent tablets easy to absorb moisture, etc., to achieve good control effect, reduce pollution, long-lasting and uniform effect of the drug

Active Publication Date: 2016-10-05
NANJING GAOZHENG AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, paddy field granules have high requirements on the dispersion performance of the preparation. Early paddy field granules did not use buoyant materials, and their specific gravity was heavier than water. The diffusion performance of the agent after application was poor. The pesticide concentration in the area is often higher than other areas of the paddy field, so it may cause phytotoxicity to the crops
Effervescent tablet herbicides can also float and spread on the water surface, but effervescent tablets require high and complex production processes, and the production cost is high. In addition, effervescent tablets are easy to absorb moisture and have very strict packaging requirements

Method used

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  • A kind of paddy field herbicide large granule and preparation method thereof
  • A kind of paddy field herbicide large granule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 10 parts by weight of pretilachlor is adsorbed with 10 parts by weight of white carbon black, and then with 0.8 parts by weight of pyrazosulfuron-methyl, 1.5 parts by weight of sodium naphthalenesulfonate formaldehyde condensate, 2 parts by weight of sulfonate lignin 1. After the sodium benzoate of 20 weight parts and the sodium chloride of 18.7 weight parts are mixed uniformly, obtain parent powder after the ultrafine pulverization of jet pulverizer. Mix the mother powder with 25 parts by weight of glass beads and 12 parts by weight of vegetable oil, transfer to extrusion granulation equipment for granulation, and obtain irregular columnar granules, dry and sieve the prepared granules points to obtain the finished product of pyrazine-propane paddy field herbicide large granule with an active ingredient content of 10.8% (mass content).

Embodiment 2

[0026] 15 parts by weight of pretilachlor is adsorbed with 15 parts by weight of white carbon black, and then mixed with 1.5 parts by weight of pyrazosulfuron-methyl, 3 parts by weight of alkylamide polyoxyethylene ether, and 5 parts by weight of phenylphenol polyoxyethylene Vinyl ether, 11 parts by weight of sodium benzoate and 4.5 parts by weight of sodium chloride are uniformly mixed, and ultrafinely pulverized by a jet mill to obtain mother powder. Mix the mother powder with 30 parts by weight of calcined pumice and 16 parts by weight of glyceride, transfer it to extrusion granulation equipment for granulation, and obtain irregular columnar granules, dry and sieve the prepared granules points, to obtain the finished product of pyrazine-propane paddy field herbicide large granule with an active ingredient content of 16.5% (mass content).

Embodiment 3

[0028] 20 parts by weight of pretilachlor is adsorbed with 15 parts by weight of white carbon black, and then with 2 parts by weight of pyrazosulfuron-methyl, 8 parts by weight of polyoxyethylene lauryl ether, 3 parts by weight of sodium octyl naphthalene sulfonate, After 16 parts by weight of sodium benzoate and 10 parts by weight of sodium chloride are uniformly mixed, they are ultrafinely pulverized by a jet mill to obtain mother powder. Mix the mother powder with 35 parts by weight of calcined vermiculite and 5 parts by weight of spindle oil, transfer to extrusion granulation equipment for granulation, and obtain irregular columnar granules, dry and sieve the prepared granules points to obtain the finished product of pyrazine-propane paddy field herbicide large granule with an active ingredient content of 19% (mass content).

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Abstract

The invention provides a weeding macro granule for a paddy field. The weeding macro granule comprises the following raw materials in parts by weight: 1-30 parts of pretilachlor, 1-25 parts of adsorbents, 0.5-5 parts of pyrazosulfuron, 0.5-25 parts of surfactants, 1-30 parts of oily substances, 10-80 parts of a solid core material, 10-20 parts of additives and 10-20 parts of fillers. The weeding macro granule for the paddy field disclosed by the invention utilizes a floating material, floating glass beads, and thus the granules can float on water, and can automatically diffuse under the action of wind and assistants of the granules; a high-performance dispersing agent is introduced into the formula, and thus the effective components of the granule can diffuse to the overall field within a short period of time. Thus, the pesticide effect is lasting, and labor and time are saved.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a paddy field herbicide large granule and a preparation method thereof. Background technique [0002] As the society pays more and more attention to the safety of pesticide application and environmental protection, pesticide formulations that pollute the environment such as emulsifiable concentrates are gradually eliminated, and new formulations of pesticides with high efficiency, low toxicity, and environmental protection such as granules and water-dispersible granules are gradually promoted. From the late 1980s, Japan began to conduct research mainly on labor-saving weeding technology for paddy fields, and successfully released large-grain herbicides for paddy fields (JUMBO agent) in the 1990s. Domestically, the Plant Protection Institute of the Chinese Academy of Agricultural Sciences has developed a 5% insecticidal large granule, which is easy to use, saves lab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N47/36A01N25/14A01P13/00A01N37/22
Inventor 汪茂勤汪莘杰米春金詹德智
Owner NANJING GAOZHENG AGROCHEM
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