Interesting experimental device for geotropism growth of roots of soilless culture plants

Abstract

The invention relates to the technical field of soilless culture, in particular to a soilless culture plant root geotropism growth interesting experiment device which comprises a root angle conversion device, a clamping device and a nutrient solution feeding device. Wherein the clamping device is mounted on one side of the root angle conversion device and used for simply fixing a plant, the root angle conversion device has the functions of manual angle conversion, handle self-locking and the like, and a plurality of experimental groups with different angles are subjected to a contrast experiment through the structure, so that the experiment is more complete; the nutrient solution feeding device can complete the functions of stirring, conveying and the like on a nutrient solution; the soilless culture technology is combined with the plant root geotropism growth experiment, the portability of the experiment device is improved, the experiment accuracy is improved, and the growth condition of the plant roots can be observed in real time more easily through soilless culture.

Description

technical field [0001] The invention relates to the technical field of soilless cultivation, in particular to an interesting experimental device for soilless cultivation plant roots to grow toward the ground. Background technique [0002] The plant root gravitropism growth experiment is one of the biological experiments carried out during primary and secondary schools in my country. The plant root gravitropism is one of the main factors that determine the growth trend of the root space, which has an important impact on nutrient absorption. This experiment is aimed at children We can establish a preliminary concept of the growth profile of plant roots; in real life, the method of combining the petri dish with the biological matrix is ​​used, and by adjusting the sealed petri dish at different angles relative to the ground to explore the geotropic growth of plant roots In the course of the experiment, the density distribution of the biological matrix is ​​usually uneven, and the...

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Problems solved by technology

[0004] The patent No.: CN102106252A describes a display system suitable for comparative observation of plant root growth. The invention relates to a comparative observation display system of plant root growth under different growth conditions. A display system for observing plant root growth comparison experiments that can meet the needs of continuous plant growth; the system has three main parts: a culture tank, a nutrient solution circulation control device, and a mobile frame. The culture tank and nutrient solution circulation control device are respectively set in On the mobile frame, the culture tank and the nutrient solution circulation control device are connected through pipelines, and the nutrient solution required for the culture tank is provided by the nutrient solution circulation control device. The teaching work such as comparison and display of growth characteristics such as water quality provides a convenient experimental tool for continuous comparison and observation of plant root growth under different environmental conditions, and solves the inability to intuitively and comprehensively measure and simulate and observe results in the existing technology. Inaccurate, lack of comparative observation function and other issues;

[0005] After research, it is found that the invention cannot circumvent the related variables in the geotropism of the plant root system, which makes the accuracy of the final results of the experiment on the geotropism of the plant root system have certain problems, and the device is not interesting and cannot cause problems. The curiosity of primary and middle school students; according to the above problems, there is an urgent need for a soilless cultivation experimental device that can shield the geotropism of plant roots in the soil, and is suitable for most of the objects that are interesting experimental devices for primary and middle school students

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