Plant molluscicide as well as preparation method and application thereof

The technology of a molluscicide and a plant is applied in the field of the preparation of a molluscicide for killing Fushou snails and the preparation of a plant molluscicide. The effect of low cost, low price and low toxicity of snail control

Inactive Publication Date: 2015-04-22
张能敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Among them, three preparations have been or are being banned due to their high toxicity, long residual time, and fatal disadvantages such as easy to cause human and animal poisoning. limit
In traditional agricultural production, farmers also have the habit of using tea seed cakes to control rice apple snails, but in actual use, there are problems such as excessive usage (20-30Kg per mu), high cost, poor molluscicide effect, Problems such as inconvenient application

Method used

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  • Plant molluscicide as well as preparation method and application thereof
  • Plant molluscicide as well as preparation method and application thereof
  • Plant molluscicide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A plant molluscicide, which consists of the following components by weight percentage:

[0050] Spirocarb 8%

[0051] The solid residue after extraction of snail carburage with tea meal is 92%.

[0052] The preparation method of above-mentioned plant molluscicide comprises the steps:

[0053] 1) Select the tea meal whose content of pentacyclic triterpenoids is 8%-12%, and use No. 6 solvent oil to remove the residual oil in the tea meal (the oil content is lower than 2%).

[0054] 2) Pulverize the degreased tea meal to obtain tea meal powder, then add the tea meal powder to a 12% sodium hydroxide solution whose weight is 5.5 times the weight of the tea meal powder, and soak at 95°C After 4.5 hours to obtain the soaking solution, add alkaline protease with a weight of 12.5% ​​of the soaking solution to the soaking solution, soak at 60°C for 12 hours, filter to obtain the filtrate and filter cake, dry the filter cake to obtain tea The solid residue after extracting snai...

Embodiment 10

[0110] A plant molluscicide, which consists of the following components by weight percentage:

[0111] Spirocarb 20%

[0112] 80% of the solid residue after extracting snail carburage with tea meal.

[0113] The preparation method of above-mentioned plant molluscicide comprises the steps:

[0114] 1) Select the tea meal whose content of pentacyclic triterpenoids is 8%-12%, and use No. 6 solvent oil to remove the residual oil in the tea meal (the oil content is lower than 2%).

[0115] 2) Pulverize the degreased tea meal to obtain tea meal powder, then add the tea meal powder to an 18% sodium hydroxide solution whose weight is 5 times the weight of the tea meal powder, and soak at 105°C After 4 hours, the soaking solution was obtained, and then alkaline protease with a weight of 5% of the soaking solution was added to the soaking solution, soaked at 55°C for 14 hours, filtered to obtain the filtrate and filter cake, and the filter cake was dried to obtain tea The solid resid...

Embodiment 11

[0119] A plant molluscicide, which consists of the following components by weight percentage:

[0120] Spirocarb 40%

[0121] 60% of the solid residue after extracting snail carburage with tea meal.

[0122] The preparation method of above-mentioned plant molluscicide comprises the steps:

[0123] 1) select the tea meal whose content of pentacyclic triterpenoids is 8%-12%, and remove the residual oil in the tea meal with No. 6 solvent oil (the oil content is lower than 2%);

[0124] 2) Pulverize the degreased tea meal to obtain tea meal powder, then add the tea meal powder to a 5% sodium hydroxide solution whose weight is 6 times the weight of the tea meal powder, and soak at 85°C After 4 hours, the soaking liquid was obtained, and then alkaline protease with a weight of 20% of the weight of the soaking liquid was added to the soaking liquid, soaked at 75°C for 10 hours, filtered to obtain the filtrate and filter cake, and the filter cake was dried to obtain tea The solid r...

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Abstract

The invention discloses a plant molluscicide as well as a preparation method and application thereof. The molluscicide consists of the following components in percentage by weight: 1-40% of a mother medicine and 60-99% of an auxiliary agent. The preparation method comprises the following steps: (1) removing grease of tea seed meal; (2) adding tea seed meal powder into a 5-18% sodium hydroxide solution of which the weight is 5-6 times that of the tea seed meal powder, soaking for 4-5 hours at 85-105 DEG C to obtain a soaking solution, then adding alkaline protease which accounts for 5-20% of the soaking solution in weight into the soaking solution, soaking for 10-14 hours at 55-75 DEG C, filtering to obtain a filtrate and a filter cake, and drying the filter cake to obtain the auxiliary agent; (3) neutralizing the filtrate by using 5-10% hydrochloric acid until precipitates cannot be separated out any more, centrifuging, removing supernatant liquid to obtain lower-layer precipitates, and drying the lower-layer precipitates to obtain the mother medicine; and (4) crushing the mother medicine and the auxiliary agent into 100-300 meshes, and then uniformly mixing. The molluscicide disclosed by the invention has the advantages of high efficiency, low toxicity, environmental protection, easiness in degradation, low cost, safety, convenience and the like. The method disclosed by the invention is simple, feasible, simple in technological process, and slight in pollution to the environment.

Description

technical field [0001] The present invention relates to the technical field of molluscicides, more specifically to a plant molluscicide, a method for preparing the plant molluscicide, and the use of the plant molluscicide in preparing medicines for killing apple snails. Background technique [0002] Apple snails, also known as big bottle snails, apple snails, and snow snails, are amphibious freshwater shellfish molluscs. They belong to the phylum Molluscs, Gastropoda, Mesogastropods, Piaconidae, and Plasma snails. They are native to the Amazon River in South America. watershed. [0003] In the 1980s, it was introduced to southern my country and Southeast Asian countries. Due to the lack of natural enemies and the characteristics of strong adaptability, strong stress resistance, and high reproductive rate (a female snail can reproduce 300,000 offspring a year), outbreaks have occurred in my country and tropical and subtropical regions of Southeast Asia. At present, apple sna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/16A01P9/00
Inventor 张能敏
Owner 张能敏
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