Microcosm device suitable for carbon and nitrogen cycle research of rice-fish compound system

By designing a microcosmic device suitable for carbon and nitrogen cycle research in rice and fishing composite systems, the problem that existing devices cannot restore the real field environment is solved, efficient research and sample collection in field environments are achieved, and the experimental control accuracy and sampling representativeness of the study are improved.

CN119846148APending Publication Date: 2025-04-18ZHEJIANG UNIV
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Patent Information

Application Number
CN202510017096.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-06
Publication Date
2025-04-18

AI Technical Summary

Technical Problem

The existing microcosmic device cannot completely restore the real field environment, resulting in the problems of low experimental control accuracy and poor sampling representativeness in the carbon and nitrogen cycle research of rice and fishing composite systems.

Method used

A microcosmic device suitable for carbon and nitrogen cycle research in rice and fishing composite systems was designed. The device includes a main box and an air harvesting hood. The main box can be inserted into the rice field farming layer, with the top higher than the water surface, and is used to divide the micro-zone; the air harvesting hood can be sealed and buckled on the top of the main box for gas collection. The device is also equipped with functional accessories such as water inlet pipes, water outlet pipes, fans, etc., to achieve precise control of the system and sample collection.

Benefits of technology

This microcosmic device is easy to be built, disassembled and reused in a field environment, and can be studied without destroying the farmland farming layer. The internal environmental factors of the system are close to the real situation in the field, achieving precise control of the system, and facilitate collection of samples such as gas, soil, water and animals.

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Abstract

The invention discloses a microcosm device suitable for carbon and nitrogen cycle research of a rice-fish compound system. The microcosm device comprises a device main body, a gas production cover and a water inlet and drainage system. The device body comprises a main box body, a water tank and a fan. The gas production cover comprises a support, a cover, a gas production pipe and a sealing ring. The water inlet and drainage system comprises a water inlet pipe, a water outlet pipe, valves and flowmeters. The device is easy to build, disassemble and reuse in a field environment, and long-term or short-term observation can be carried out on the premise that a farmland plough layer is not damaged; and a researcher can conveniently collect gas, soil, water and animal samples. According to the invention, carbon-nitrogen cycle characteristic comparison of different modes of the rice-fish compound system can be carried out on a small-area field, and the method is also suitable for regional networking monitoring research for comparing different soil and climate condition differences. The method has important significance for deeply researching the carbon-nitrogen cycle characteristics and mechanism of the rice-fish compound system, and is worthy of popularization and application.
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