Weeding macro granule for paddy field and preparation method thereof

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

Active Publication Date: 2014-04-02
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

Method used

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  • Weeding macro granule for paddy field and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] 10 parts by weight of pretilachlor is adsorbed with 10 parts by weight of white carbon black, then with 0.8 parts by weight of pyrazosulfuron, 1.5 parts by weight of sodium naphthalenesulfonate formaldehyde condensate, and 2 parts by weight of sulfonate lignin , 20 parts by weight of sodium benzoate and 18.7 parts by weight of sodium chloride are mixed uniformly, and then superfinely pulverized by a jet mill to obtain a mother powder. Mix the mother powder with 25 parts by weight of glass float beads and 12 parts by weight of vegetable oil, and transfer it to the extrusion granulation equipment for granulation to obtain irregular cylindrical granules. The granules are dried and sieved. Then, the finished product of pyridine·propane paddy field weeding large granules with active ingredient content of 10.8% (mass content) is obtained.

Example Embodiment

[0025] Example 2

[0026] 15 parts by weight of pretilachlor was adsorbed with 15 parts by weight of white carbon black, and then with 1.5 parts by weight of pyrazosulfuron, 3 parts by weight of alkylamide polyoxyethylene ether, and 5 parts by weight of phenylphenol polyoxyethylene After the vinyl ether, 11 parts by weight of sodium benzoate and 4.5 parts by weight of sodium chloride are uniformly mixed, they are superfinely pulverized by a jet mill to obtain a mother powder. Mix the mother powder with 30 parts by weight of calcined pumice and 16 parts by weight of glycerides uniformly, and transfer them to the extrusion granulation equipment for granulation to obtain irregular columnar granules. The granules are dried and sieved. Then, the finished product of pyridine·propane paddy field weeding large granules with active ingredient content of 16.5% (mass content) is obtained.

Example Embodiment

[0027] Example 3

[0028] 20 parts by weight of pretilachlor was adsorbed with 15 parts by weight of white carbon black, and then with 2 parts by weight of pyrazosulfuron, 8 parts by weight of polyoxyethylene lauryl ether, 3 parts by weight of sodium octylnaphthalene sulfonate, After 16 parts by weight of sodium benzoate and 10 parts by weight of sodium chloride are uniformly mixed, the mother powder is obtained after being superfinely pulverized by a jet mill. Mix the mother powder with 35 parts by weight of calcined vermiculite and 5 parts by weight of spindle oil evenly, and transfer it to the extrusion granulation equipment for granulation to obtain irregular cylindrical granules. The granules are dried and sieved. Then, the finished product of pyridine·propane paddy field weeding large granules with active ingredient content of 19% (mass content) is obtained.

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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 on the labor-saving weeding technology for paddy fields, and successfully launched the large-grain weeding agent (JUMBO agent) for paddy fields 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...

Claims

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Application Information

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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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