Experimental device for observing the influence of harmful gases on plants

Abstract

The invention relates to an observation experiment device for influences of harmful gas on a plant. The device comprises an observation box, wherein the observation box is made of a transparent material; the bottom of one side of the observation box is fixedly connected with one end of each of two guide rails; a cross section of each guide rail is of an I-shaped structure; the guide rails are in parallel mutually; scales are arranged on the guide rails; a sliding seat is movably mounted on each guide rail; and a cross section of each sliding seat is in a C structure. A limiting seat and the sliding seats can only slide horizontally along the guide rails; the limiting seat can be fixed on the guide rail by tightening a bolt; when the sliding seats touch a contact switch on the limiting seat, a motor stops; the scales are arranged on the guide rails; a feed amount of the harmful gas and moisture can be accurately controlled by adjusting the position of the limiting seat; the feed amountof the harmful gas can be calculated through the position of the limiting seat and the scales; an accurate experiment result is guaranteed; and the different amounts of the harmful gas can be fed by adjusting the position of the limiting seat, so that the influences of the different amounts of the harmful gas on the plant are observed.

Description

technical field [0001] The invention belongs to the field of experimental devices, in particular to an experimental device for observing the influence of harmful gases on plants. Background technique [0002] Plant growth needs suitable light, suitable temperature, water, necessary humidity and air, etc. Gas is one of the important factors necessary for plant growth, and its function and influence on plants is an important content in science and biology courses at different stages such as primary school, middle school, and university. In recent years, with the decline of air quality, harmful gases in the air have gradually increased, and more and more attention has been paid to improving and protecting air quality through green plants. In order to plant plants reasonably to absorb harmful gases, it is necessary to observe the effects of harmful gases on different plants. Therefore, specific strategic guidelines can be formulated. However, the existing observation devices ar...

AI Technical Summary

Problems solved by technology

In recent years, with the decline of air quality, harmful gases in the air have gradually increased, and more and more attention has been paid to improving and protecting air quality through green plants. In order to plant plants reasonably to absorb harmful gases, it is necessary to observe the effects of harmful gases on different plants. Therefore, specific strategic guidelines can be formulated. However, the existing observation devices are usually unable to adjust the precise feeding amount of harmful gases, and the conventional method is to inject a certain amount of harmful gases at one time. The experimental observation devices cannot be used multiple times. inconvenient

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