Paddy field environmental monitoring sampler and sampling method

Abstract

Provided are a paddy field environmental monitoring sampler and sampling method. The paddy field environmental monitoring sampler comprises a scale guide pipe, a pipe seat, a sealing piston, a gripping handle and a gear rack linkage device. The gear rack linkage device comprises a movable wrench, a gear rack, a shifting sheet reset spring and a movable shifting sheet. A pipe seat gear rack hole is formed in the middle of the pipe seat, the pipe seat is connected with the gripping handle through a screw, and the gripping handle is formed by shearing and bending an iron sheet. The shifting sheet reset spring is arrange at the left end in the gripping handle, the right end of the shifting sheet reset spring is connected with the movable shifting sheet, a shifting sheet gear rack hole is formed in the middle of the movable shifting sheet, a shifting sheet tongue is arranged on the lower portion of the movable shifting sheet, the section of the movable wrench is in a U shape, a wrench pin is arranged at the top of the movable wrench, and the left end of the wrench pin abuts against the shifting sheet tongue.

Description

technical field [0001] The invention relates to the field of farmland environment monitoring and sampling, in particular to a paddy field environment monitoring sampler and a sampling method. Background technique [0002] Pesticide risk monitoring is a complex system engineering. For various risks, it is necessary to prevent them in advance, and to make necessary improvements to the risk management methods during and after the events, and to repeat and cycle improvements. In recent years, out of the need to protect the safety of agricultural production, the quality and safety of agricultural products, the ecological safety of the environment, and the health and safety of humans and animals, my country has begun to strengthen the risk monitoring of pesticide use. Farmland environmental risk monitoring is an important part of it. However, due to work Late start, poor foundation, some technical methods are still incomplete and need to be improved urgently. [0003] Scientific ...

AI Technical Summary

Problems solved by technology

[0003] Scientific sampling is a prerequisite for carrying out environmental risk monitoring of pesticides. If there are obvious defects in sampling methods and tools, the samples will inevitably be separated from the real environmental background, and there will be problems such as large fluctuations in residual values ​​and low reliability of prediction results, which will further affect risk assessment. bring difficulties

For example, in the field of pesticide environmental risk monitoring and sampling in paddy fields, the current method of sampling field water and soil separately has virtually broken the internal relationship between the two, and there is a lack of field water depth parameters and inconsistent overlap of samples in vertical space As a result, the test results of sample residues can only be used as a general reference, and cannot meet the rigid requirements of environmental prediction calculations and risk prevention

Moreover, various tools such as water bottles, soil drills, and grabs are used to sample field water and soil, but there are still shortcomings such as a large number of tools to carry and use, cumbersome operating procedures, heavy workload for operators, and inaccurate sample depth.

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