Vacuum cultivation system

Abstract

The invention relates to a vacuum cultivation system, in particular to a vacuum cultivation system which maintains an environment of atmospheric pressure lower than the standard atmospheric pressure and a certain air circulation flow in a cultivation room. The system comprises an airtight cultivation room, a mechanical pump and a plurality of pressure control pipes, wherein the air outlet of the cultivation room is connected with an air flow controller for controlling the air circulation flow, and an air valve for controlling the air flow in the cultivation room is connected between the mechanical pump and the gas flow controller; the pressure control pipes which are filled with a liquid for regulating the degree of vacuum in the cultivation room are connected in series through a plurality of air guiding pipes, and the height of each air guiding pipe with one end of connected with atmosphere, is higher than the height of the liquid in the pressure control pipes; and the pressure control pipes are connected with the air inlet of the cultivation room. The system can maintain a constant degree of vacuum in the cultivation room, enable the air in the cultivation room to continuously and circularly flow with a certain flow, and control the air flow direction in the cultivation room.

Description

technical field [0001] The invention relates to the field of plant cultivation, in particular to a vacuum cultivation system. Background technique [0002] Plant cultivation and breeding in space has great potential to change plant productivity, and can reduce the occurrence of plant diseases and insect pests in plant cultivation. Most space environments are in different vacuum environments. In the current scientific research on plant cultivation and breeding in simulated space environments, it is necessary to control the vacuum degree. Most of the methods are monitored by electronic instruments, using an air pump or a vacuum pump to create a vacuum degree. When the set vacuum degree is reached, the air pump or vacuum pump stops working, so that the vacuum degree is controlled. However, using the above method, the problems that arise are as follows: The vacuum degree in the airtight container may be a changing process, and the gas in the airtight container does not form a ci...

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Problems solved by technology

[0002] Plant cultivation and breeding in space has great potential to change plant productivity, and can reduce the occurrence of plant diseases and insect pests in plant cultivation. Most space environments are in different vacuum environments. In the current scientific research on plant cultivation and breeding in simulated space environments, it is necessary to control the vacuum degree. Most of the methods are monitored by electronic instruments, using an air pump or a vacuum pump to create a vacuum degree. When the set vacuum degree is reached, the air pump or vacuum pump stops working, so that the vacuum degree is controlled. However, using the above method, the problems that arise are as follows: The vacuum degree in the airtight container may be a changing process, and the gas in the airtight container does not form a circulating flow, so the vacuum degree is maintained at a constant level, while maintaining a constant vacuum degree and a certain flow rate in the container Gas circulation is more difficult to achieve

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