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Experimental device for acute toxicity of rice pest control chemicals to crustacean aquatic organisms

A technology for aquatic organisms and acute toxicity, applied in biological testing, material inspection products, etc., can solve problems such as increasing control costs and endangering the quality and safety of rice, and achieve improved accuracy and reliability, improved flexibility, and structural design reasonable effect

Active Publication Date: 2022-06-21
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the 2020 National Agricultural Technology Extension Service Center's Drug Resistance Monitoring Bulletin, the main rice pests, brown planthopper, brown planthopper, and rice stem borer, have developed varying degrees of resistance to commonly used pesticides in the field, which not only increases the cost of control, but also increases the damage. Risks to rice quality and safety

Method used

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  • Experimental device for acute toxicity of rice pest control chemicals to crustacean aquatic organisms
  • Experimental device for acute toxicity of rice pest control chemicals to crustacean aquatic organisms
  • Experimental device for acute toxicity of rice pest control chemicals to crustacean aquatic organisms

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 , 2 The shown device for the acute toxicity test of rice pest control agents to crustacean aquatic organisms includes a test box 1, a drainage component 2, a pharmaceutical preparation component 3 and a controller; a base 10 is provided at the lower end of the test box 1, and the interior of the test box 1 is horizontal There is a partition 11; inside the test box 1, and located at the upper end of the partition 11, there are 4 breeding cavities 110 and a medicine preparation cavity 111, and the inside of each culture cavity 110 is slidably connected to the culture cage 12; the medicine preparation cavity 111 is located in the Between several breeding cavities 110, a drain pipe 13 is arranged on the side wall of the test box 1;

[0039] like figure 1 , 4 , 5 and 6, the drainage assembly 2 includes a driving screw 20, a sealing plate 21, a first motor 22 and a second motor 23, 16 driving screws 20 are provided, and the 16 driving screws 20 are evenly dis...

Embodiment 2

[0043] This embodiment differs from Embodiment 1 in that:

[0044] like figure 1 , 3 As shown, there is an aerator 4 inside the base 10, and aeration joints 40 are provided on the side walls of the test box 1 corresponding to the positions of each breeding cavity 110, and each aeration joint 40 is connected to the aerator 4 through a conduit, respectively, An electromagnetic flow valve is arranged at the connection, and the electromagnetic flow valve and the aerator 4 are respectively electrically connected to the controller. The electromagnetic flow valve and the aerator 4 are both commercially available products; by setting the aerator 4, the test chamber can be made 1 It can better simulate the growth environment of crustacean aquatic organisms, thereby providing the authenticity of the test environment;

[0045] like figure 1 , 2 3, the outer wall of the test box 1 is provided with a water bath box 5, and the water bath box 5 is provided with an electric heater 50 and ...

Embodiment 3

[0047] This embodiment differs from Embodiment 1 in that:

[0048] like figure 1 As shown, inside the test box 1, and at the lower end of the partition 11, a waterproof plate 14 is provided, and the first motor 22 and the second motor 23 are both located at the lower end of the waterproof plate 14; The second motor 23 plays a protective role; each breeding cavity 110 is provided with a liquid level sensor, and the liquid level sensor is a commercially available product; by setting the liquid level sensor, it is convenient to control the water supply in the breeding cavity 110, and at the same time, it is beneficial to control The uniformity of the water storage in the breeding cavity 110 improves the accuracy of the test results.

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Abstract

The invention discloses a test device for the acute toxicity of rice pest control agents to crustacean aquatic organisms, comprising a test box, a drainage assembly, a drug preparation assembly and a controller; There is a breeding net cage in the box; the drainage assembly includes a driving screw, a sealing plate, a first motor and a second motor, the driving screw is threadedly connected with the breeding net cage, a sealing column is arranged on the sealing plate, and the first motor provides power for the sealing plate , the second motor provides power for the drainage screw; the drug preparation component includes a drug box, a lifting motor and an ultrasonic oscillator. The controller is electrically connected with each electrical appliance; the structure design of the invention is reasonable, it is beneficial to improve the accuracy of the toxicity test of crustacean aquatic organisms, and it is suitable for mass promotion.

Description

technical field [0001] The invention relates to the technical field of aquatic organism toxicity test equipment, in particular to an acute toxicity test device of a rice pest control agent to crustacean aquatic organisms. Background technique [0002] Rice is the crop with the largest planting area in my country, and it is also a crop severely attacked by pests and diseases. The annual area of ​​pests and diseases is 106.67 million ha. 2 times or more. Due to the fact that agricultural production in my country is mainly operated in a decentralized manner, farmers blindly use drugs and overdose are more common, resulting in a rapid increase in the resistance of rice pests. According to the 2020 National Agricultural Technology Extension Service Center's Drug Resistance Monitoring Bulletin, the main rice pests, brown planthopper, lepidoptera Risks to the quality and safety of rice. [0003] However, the national crayfish aquaculture areas are mainly concentrated in the midd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/50
Inventor 王宏伟徐漫蔡小宇田丰朱昱璇廖建华
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA