Field rice root system sampling device and method

Abstract

The invention discloses a field rice root system sampling device and method. The device comprises a sampler with two ends opened, a hit cap which is installed at the upper end of the sampler in a sleeving mode, a hitting device which is installed on the hit cap and a sample pushing device, the sampler is of a cylindric structure with two ends opened, a cutting edge is formed in the inner side of the lower end, two handles are symmetrically installed on the upper portion of the outer wall, the hit cap is detachably installed at the upper end of the sampler by means of a bolt, and the hit cap has the advantages of being convenient to carry and easy to disassemble. The method comprises the following steps of field management, plant identification, root system sampling and root system treatment. According to the method, field management is conducted firstly, root system growth can be facilitated, the soil conditions can be improved, sampling is convenient, sampling is conducted through the sampling device, the sampling efficiency is greatly increased, and the sampling accuracy is improved.

Description

Technical field [0001] The invention relates to the technical field of rice root sampling, in particular to a field rice root sampling device and method. Background technique [0002] The root system is the main organ for plants to absorb nutrients and water, and is the basis for the survival of the above-ground parts. Plant roots are deep underground, and there are difficulties in observation and research. Therefore, reasonable root extraction devices and research methods are particularly important for research on field roots. At present, although there are many devices on root sampling and how to observe the root system, most of them are concentrated in non-field conditions. Plant roots have strong plasticity. In different growth media (such as agar, hydroponics, etc.), their shapes and functions are completely different. Therefore, researching roots under field conditions is more in line with the actual growth of plants. [0003] At present, when sampling rice roots in the fie...

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Problems solved by technology

[0003] At present, when sampling the rice root system in the field, it is generally used to dig directly with a shovel or use a cylindrical soil extractor, which is mostly manual, which is time-consuming and laborious. Especially when the number of samples is large, it is difficult to meet the needs of the test and miss the sampling period.

Although the direct digging with a shovel in the paddy field ensures the integrity of the upper part of the root system, the lower root system cannot be completely removed

Manual sampling with a cylindrical soil extractor can ensure the original shape and integrity of the root system, and it is easy to reflect the growth status of the rice root system in the field, especially the deep root system. However, by manual tapping, the diameter of the sampling cylinder is 10cm, and it is difficult to do it manually if it exceeds 20cm.

At present, large-scale machinery can easily take out the soil containing the root system, but due to its closed top cover, it is impossible to take out the soil column containing the root system, and it is not easy to carry, especially in paddy fields

Therefore, the existing sampling devices and sampling methods are inaccurate in sampling, and it is difficult to reflect the actual characteristics of rice root growth in the field, which brings certain difficulties to root research.

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