Nondestructive measuring method for leaf area of broad leaved plant

A measurement method and technology of broad-leaved plants, applied in the field of non-destructive measurement, can solve problems such as damage to plant leaves, and achieve the effects of improving efficiency, accurate data, and fast speed

Inactive Publication Date: 2010-08-11
JILIN UNIV
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  • Abstract
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the problem of damage to plant leaves in the prior art, and to provide a non-destructive measurement method for leaf area of ​​broad-leaved plants

Method used

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  • Nondestructive measuring method for leaf area of broad leaved plant
  • Nondestructive measuring method for leaf area of broad leaved plant
  • Nondestructive measuring method for leaf area of broad leaved plant

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Embodiment Construction

[0065] The present invention is described in detail below in conjunction with accompanying drawing:

[0066] refer to figure 1 , the leaves of broad-leaved plants growing in nature are often not completely on a horizontal plane as a whole, and many of them are in a natural curved state. This brings certain difficulties to the measurement of leaf area, and the traditional measurement methods have their own defects.

[0067] The method for nondestructively measuring the leaf area of ​​broad-leaved plants according to the present invention firstly takes pictures of the leaves to be measured which are in a natural growth state and which are shaded by other leaves. Then carefully lift the blade 2 covering the blade 1 to be tested by hand, so that the blade 1 is not blocked, so that when the blade 1 is photographed with a camera, a complete blade image can be taken.

[0068] refer to figure 2 , this method needs to use a 10cm×10cm white cardboard as a reference area.

[0069] r...

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Abstract

The invention discloses a nondestructive measuring method for the leaf area of a broad leaved plant, and aims to solve the problem that a measured leaf is destroyed in the prior art. The nondestructive measuring method comprises the following steps: 1, measuring an area S1 of a white board through a ruler, wherein S1 is equal to 10cm*10cm, namely 100cm<2>; 2, photographing the white board and the measured leaf; 3, cropping photos; 4, respectively weighing the picture weight of the white board G1 and the picture weight of the measured leaf G2; 5, calculating the real area S2 of the measured leaf, wherein S2 is equal to S1*G2 / G1; 6, weighing the picture weight of the measured leaf when a part of the measured leaf is illuminated; 7, calculating the relative total area S3 of the measured leaf when the part of the measured leaf is illuminated; and 8, calculating the relative area S4 of the illuminated part of the leaf, wherein the relative area S4 of the illuminated part of the leaf is obtained through a formula (S4 / S3 is equal to G4 / G3); and S4 is equal to G4 / G3*S3.

Description

technical field [0001] The present invention relates to a kind of non-destructive measurement technology method of undergrowth broad-leaved plant blade, more specifically, the present invention relates to a kind of broad-leaved plant leaf area that utilizes digital camera combined with scissors, electronic balance to measure and calculate broad-leaved plant leaf area nondestructive measurement method. Background technique [0002] Plant leaves are the main organs of plants for photosynthesis, and the size of the leaf area directly affects the effective utilization rate of photosynthetic radiation. At present, there are mainly grid method, scanning method, leaf area meter method and coefficient measurement method for the determination of leaf area at home and abroad. [0003] The grid method only needs a grid plate, which is low in cost and simple in method, but it is time-consuming, laborious, and has large errors. The scanning method is more efficient in measuring leaf ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/28G01G17/00
Inventor 于海业武海巍王淑杰张蕾张强肖英奎杨昊谕隋媛媛
Owner JILIN UNIV
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