Plant leaf motion azimuth angle measurement instrument

Abstract

The invention relates to a plant leaf motion azimuth angle measurement instrument for measuring leaf motion angle change in plant leaf heliotropic motion. The measurement instrument is structurally characterized in that: the measurement instrument is provided with a main board; a power supply box and a power supply switch are arranged on the main board; a suspension angle ring ruler and a directional angle ring ruler are arranged below the main board; the suspension angle ring ruler is movably connected with the main board, one end of the suspension angle ring ruler is provided with a metal sucking disc, the main board close to the metal sucking disc is provided with an electromagnet, and the movably connected position of the other end of the suspension angle ring ruler and the main boardis provided with a limit spring; the directional angle ring ruler is fixedly connected with the main board, and a plane formed by the directional angle ring ruler is vertical to the main board; and the directional angle ring ruler is provided with a directional angle ring ruler pointer which is fixedly arranged on the suspension angle ring ruler, and the suspension angle ring ruler is provided with a sliding pointer. The measurement instrument can accurately and simultaneously measure the directional angle and the suspension angle of a plant leaf, and is time-saving, labor-saving, easy to operate, practical and convenient.

Description

technical field [0001] The invention relates to a plant leaf movement azimuth angle measuring instrument which can be used to measure the change of the leaf movement angle during the heliotropic movement of the plant leaves. Background technique [0002] The leaves of plants do not always maintain a fixed position throughout the day. Some plant leaves change with the sun's movement direction and angle, which is called heliotropic movement. Heliotropism in leaf movement is widely found in various plants, including annual plants and herbaceous plants in arid and semi-arid regions such as velvet leaves and Tribulus terrestris, as well as crops such as cotton, beans, alfalfa, and lupine. The heliotropic motion is divided into two types: one is the lateral heliotropic motion, and the blade motion always makes the leaf plane perpendicular to the incident light of the sun to capture more light energy; the other is the heliotropic motion, the blade Movement always keeps the leaf pl...

AI Technical Summary

Problems solved by technology

Although the azimuth angle measurement method can analyze how the leaves move in space, it is only suitable for plants with relatively simple leaf movement methods, such as cotton; it is incapable of measuring the leaves of plants with more complex movement methods, such as beans

This method has a large error in the measurement and cannot describe the light receiving state of the leaves

The projection method can describe the light-receiving state of the blade and directly reflect the amount of light received by the blade. However, this method cannot analyze the blade in the spatial orientation and cannot reflect the movement process of the blade in space. complex

The fixed-point photography method can intuitively reflect the state and change process of the heliotropic movement of the leaves, but cannot quantitatively describe the movement mode of the leaves and the light-receiving state

[0006] The method of measuring the heliotropy of leaves is continuously improving, but the progress is slow, and there is no commercially produced instrument for measuring the heliotropy of leaves at present

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