Green pollution-free pesticide and preparation method thereof

A pesticide and green technology, applied in the field of pesticides, can solve the problems of undiscovered immune or high-resistant varieties, and achieve the effects of low cost, non-toxic environment and simple production process

Inactive Publication Date: 2010-12-29
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sheath blight resistance breeding has not found immune or high resistance varieties so far
Since the 1970s, Jinggangmycin has been an important biopesticide for the control of rice sheath blight in my country. However, there are certain disadvantages in the long-term and large-scale application of the same agricultural antibiotic to control the same disease.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take the grass stems and leaves from the side of the well fence, the cypress leaves, and the Japanese coral leaves, and dry them in an oven at 50°C to constant weight, and grind them to about 60 meshes with a pulverizer.

[0022] Then, get 30 kg of scutellaria powder prepared in the previous step, 15 kg of cypress powder, and 55 kg of Japanese coral tree powder in a revolvable airtight tank, and then add 500 L of ethanol with a concentration of 95%. The closed tank is rotated at 100rpm at room temperature for 48 hours, then the extract is released, and then 400L of 95% ethanol is added to the closed tank to extract again for 40 hours. The two extracts are combined, filtered, and vacuum concentrated to 200L in another closed tank. about.

[0023] Add 30 kg of 320-mesh diatomaceous earth to the concentrated plant extract, mix well, and dry in vacuum at low temperature to obtain a mixed plant extract.

[0024] Then add 5 kg of ammonium sulfate and 100 g of sodium alkylben...

Embodiment 2

[0028] Take the grass stems and leaves from the side of the well fence, the cypress leaves, and the Japanese coral leaves, and dry them in an oven at 55°C to constant weight, and grind them to about 60 meshes with a pulverizer.

[0029] Then, get 15kg of scutellaria powder prepared in the previous step, 40kg of cypress powder, and 45kg of Japanese coral tree powder in a revolvable airtight tank, and then add 500L of 95% ethanol. The closed tank is rotated at 100rpm at room temperature for 48 hours, then the extract is released, and then 500L of 95% ethanol is added to the closed tank to repeat the extraction once. The two extracts are combined, filtered, and vacuum concentrated to about 200L in another closed tank. .

[0030] 25 kg of 320-mesh diatomaceous earth was added to the concentrated plant extract, mixed evenly, and then vacuum-dried at low temperature to obtain a mixed plant extract.

[0031] Add 2kg of ammonium sulfate, 200g of sodium alkylbenzene sulfonate, and 1kg...

Embodiment 3

[0035] Take the grass stems and leaves from the side of the well fence, the cypress leaves, and the Japanese coral leaves, and dry them in an oven at 60°C to constant weight, and grind them to about 60 meshes with a pulverizer.

[0036] Then, get 15kg of scutellaria powder prepared in the previous step, 15kg of cypress powder, and 70kg of Japanese coral tree powder in a revolvable airtight tank, and then add 600L of 95% ethanol. The closed tank is rotated at 100rpm at room temperature for 48 hours, and then the extract is released. Then, 400L of 95% ethanol is added to the closed tank to repeat the extraction for 40 hours. The two extracts are combined, filtered, and then vacuum concentrated to 200L in another closed tank. about.

[0037] 25 kg of 320-mesh diatomaceous earth was added to the concentrated plant extract, mixed evenly, and then vacuum-dried at low temperature to obtain a mixed plant extract.

[0038] Then add 3kg of ammonium sulfate, 150g of sodium alkylbenzenes...

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Abstract

The invention belongs to the technical field of pesticides, in particular to a green pollution-free pesticide and a preparation method thereof. The pesticide is prepared by taking extractives of Pieris multifida, Platycladus and Viburnum odoratissimum as main components, and adding surface active agent, suspending agent, penetrating agent and synergist into the main component at a certain proportion; or the pesticide is prepared by taking the extractive of the Viburnum odoratissimum as a main component and adding solvent, emulsifier, the suspending agent, the penetrating agent and the synergist into the main component at a certain proportion. The green pollution-free pesticide in the invention is a bactericide which has efficient prevention and cure effect on rice sheath blight, a certaineffect on rice blast, no toxicity and harmfulness to men and beasts and no pollution on the ecological environment. The green pollution-free pesticide in the invention has the advantages of easily obtained raw materials, simple production process, low cost and rapid effect taking.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a green and pollution-free pesticide and a preparation method thereof. Background technique [0002] China is a large agricultural country, and rice is the main food crop in China. Rice fungal diseases have greatly affected the yield and quality of rice, and rice sheath blight is the most important disease in rice cultivation. Rice sheath blight caused by Rhizoctonia solani (Rhizoctonia solani ), widely distributed in various rice-producing areas in the world, generally can cause 10% to 30% yield loss, and reduce yield by 50% when the disease is high. Currently, chemical pesticides are mostly used to prevent and control rice diseases. With the increasingly prominent problems of environmental protection and bacterial resistance, the use and export sales of chemical pesticides have encountered increasing resistance, and chemical control has been severely challenged....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/08A01N65/06A01N65/04A01P3/00
Inventor 王海华王金宇彭喜旭谢宗华高健
Owner HUNAN UNIV OF SCI & TECH
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