Testing device suitable for researching soil-animal-plant interface process

Abstract

The invention discloses a testing device suitable for researching a soil-animal-plant interface process. The testing device comprises a circular cover plate, a cylindrical barrel, a cylindrical net barrel and an iron label, wherein the cylindrical net barrel is located at the middle position in the cylindrical barrel, a layer of nylon net is tightly attached to the inner wall of the cylindrical barrel, the upper edges of the two barrels are kept at the same level, the two barrels are fixed by the circular cover plate and the iron label, plant planting holes, air holes and handle insertion holes are formed in the circular cover plate, seedlings can be grown in the cylindrical planting sponge before planting of the plants, and after the seedlings grow out, the seedlings and the planting cotton are inserted into the soil together. The testing device can limit the activity range of plant root systems and soil animals in a proper soil range, does not affect the normal activity of the soil animals at the same time, and effectively prevents the animals from escaping, thereby greatly increasing the contact opportunity of the soil animals and the plant root system interface, the testing device can also be used for researching the indirect influence of the activity of the soil animals on the plant interface process under the condition of not contacting the root system.

Description

technical field [0001] The invention belongs to the technical field of soil ecology test devices, in particular to a test device suitable for studying soil-animal-plant interface processes. Background technique [0002] Biodiversity in soil accounts for more than 25% of the total biodiversity on Earth. A large number of studies have shown that high soil biodiversity is crucial to improving soil fertility and maintaining soil health, and it is used as one of the key indicators to measure soil ecological health. As an essential part of the soil ecosystem, soil animals can improve the soil structure, regulate the growth environment of soil microorganisms and plant roots through activities such as predation, excretion, and burrowing, and significantly affect the organisms of nutrients such as carbon, nitrogen, and phosphorus in the soil. Geochemical cycle process, which in turn significantly promotes plant growth and development. Therefore, the important role of soil animal di...

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Problems solved by technology

However, because the roots of plants in the root box generally grow densely in a relatively narrow space, it is not suitable for inoculating large and medium-sized soil animals, and because most of the roots of plants are close to the nylon mesh wall, the relationship between soil animals and roots is greatly limited. chance of exposure, thereby reducing the accuracy of the test

Most of the existing research is to directly inoculate soil animals into pot experiments, but due to the wide range of activities of soil animals, this method cannot accurately control the range of activities of soil animals, weakens the impact of soil animals on plants, and cannot further Exploring the effects of soil fauna on plant interface processes without contacting soil roots

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