JPH11332376A - Diagnosing grown state of plant from respiration rate of leaf - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect deterioration of grown state of a plant before appearance of a bad state and facilitate the management of plants in indoor (atrium) by calculating a perspiration rate of a leaf of a plant and diagnosing a grown state of the plant owing to a correspondence of the respiration rate with a leaf weight of the leaf per unit area. SOLUTION: A grown state of a plant is diagnosed by calculating a respiration rate of a leaf of the plant to be diagnosed. Previously, a relation of a leaf weight per unit area with a respiration rate is calculated about a healthy plant and a diseased plant to obtain a growth diagnosis graph and a grown state of a plant is preferably diagnosed owing to the resultant growth diagnosis graph.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for diagnosing the growth state of a plant by measuring the respiration rate of the leaves of the plant, and for detecting the deteriorated plant before appearance. In the following, the present invention will be described using a tree as an example of a plant.

[0002]

2. Description of the Related Art Hitherto, the growth state of a tree has generally been diagnosed based on appearance information such as leaf color, appearance of necrosis, and presence or absence of withering. Diagnosis based on appearance information requires a lot of expertise, experience and intuition. In addition, since the diagnosis cannot be performed until the growth state actually appears on the external appearance, depending on the case, it may be supposed that the diagnosis becomes irrecoverable.

[0003] For this reason, for example, trees that are always in good growth conditions, such as indoor planting trees such as atriums, are required. Cannot be used. Further, as described above, there is a possibility that the coping with a tree whose growth state has deteriorated may be delayed.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a simple method for controlling the growth of plants such as trees.
The aim is to develop a method that can reliably diagnose before appearance.

[0005]

Means for Solving the Problems Plants obtain the energy required for growth by decomposing carbohydrates produced by photosynthesis by respiration. Therefore, there is a strong relationship between the respiratory rate and the growth state of the plant, and it is presumed that the deterioration of the growth state occurs because sufficient energy required for growth cannot be obtained with a decrease in the respiratory rate. Also, plants, roots, stems
(Stem / branch) and leaf are organs that cooperate with each other to carry out vital activities. It is speculated that a disorder in one organ causes a disorder in another organ. It is presumed that it is possible to diagnose the growth state of the body.

[0006] On the other hand, on the other hand, the respiration rate of the leaves of a tree is said to vary depending on the season and leaf age.
It is presumed that it is necessary to consider whether these variables should be considered.

The present inventor has continued to study while taking such points into consideration, and has obtained the following findings to complete the present invention. Tree growth is closely related to leaf respiration rate,
Since the respiratory rate of the leaves rapidly decreases due to the deterioration of the growing state, knowing the respiratory rate is optimal for judging an earlier growing state.

The change in the respiration rate with respect to the leaf weight per unit area of the leaf is linear, in other words, the relationship between the leaf weight per unit area and the respiration rate is represented by a linear function. Considering the change in the respiration rate with respect to the leaf weight per unit area of the leaf, there is no large change in the respiration rate with leaf age or season, and a direct relationship with the plant growth state at that time is seen.

Here, the present invention is as follows. (1) A method of determining the leaf respiration rate of a plant to be diagnosed and diagnosing the growth state of a tree based on the correlation with the leaf weight per unit area of the leaf.

(2) For one plant, the relationship between the leaf weight per unit area and the respiration rate is determined for the leaves of a healthy plant and a diseased plant, and a growth diagnosis diagram is created. A method for diagnosing the growth state of a plant based on it.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a graph showing a growth diagnosis in a graph format in which the growth state is arranged by the respiration rate of a leaf and the leaf weight per unit area.

FIG. 1 is a graph showing the results of measuring the respiration rate and the leaf weight per unit area of leaves of shirakashi with good and bad growth conditions.

At this time, it is confirmed that the appearance of the trees in good growth condition has not deteriorated after two months.
Individuals whose appearance has deteriorated after 2 months are treated as trees with caution for growth. The relationship between respiration rate and leaf weight per unit area in each of good growing and poor growing trees is
It becomes a linear function and becomes linear, which is graphed.
FIG. 1 is created by dividing the graph into areas of poor growth, caution, and good growth. The description of each phrase in the growth diagnosis diagram shown in FIG. 1 is as follows.

Normal line: Correlation curve based on a series of measured values of healthy tree leaves Growth attention line: A line that can be judged to be out of the normal line with the exception of errors due to respiratory rate measuring instruments and individual differences between trees. Poorly growing line: Correlation curve based on measured values of leaves of poorly growing trees Adaptation limit line: Respiration rate of tree leaves most adapted to low light conditions Normal area: Area higher than the growing attention line and the adaptation limit line, located in this area The trees are normal now and for at least a certain period of time.

Cultivated caution area: An area partitioned by a cautioned growth line and a poorly grown line. The trees in this area need to be monitored for future trends.

Poor growth area: An area lower than the poor growth line and the adaptation limit line. Trees in this area are more likely to degrade and eventually die if the obstruction is not removed.

FIG. 2 is a flow chart when a tree growth diagnosis is performed according to the present invention. In the present invention, tree growth judgment is performed through the following steps.

The respiration rate, leaf weight and leaf area of a tree to be diagnosed are measured. What is measured in the present invention is so-called dark respiration, and the respiration rate is measured by placing the collected leaves in a dark place with a constant temperature and measuring the amount of carbon dioxide produced after a lapse of a predetermined time. The leaf weight per unit area can be obtained by calculation by performing leaf area measurement by image analysis and weight measurement by weighing.

The measurement of the respiration rate in preparing a growth diagnosis diagram in advance is performed by the above-described operation on the sample leaves grown under various conditions. It is only necessary to measure the respiration rate of the leaves collected from the plant to be diagnosed only once as described above.

The measured values of the leaf weight and the respiration rate obtained in the above-mentioned steps are plotted on a growth diagnosis diagram obtained in advance. Check which area has the measurement point. In the illustrated example, the area is divided into three areas: a normal area, a growing caution area, and a growing area.

The following judgment is made on the tree to be diagnosed depending on which area the user has entered. Normal area: Current normal Growth-caused area: Watch out for future trends Poorly-grown area: If the obstacle is not removed, the appearance deteriorates and eventually dies.

As described above, it is expected that the respiration rate of the leaves of a tree varies depending on the season and the leaf age. However, unexpectedly, according to the present invention, it has been found that such a fluctuation factor does not have a significant effect when the respiration rate is considered for the leaf weight per unit area of the leaf.

According to the present invention, the growth diagnosis diagram is prepared in advance as described above. The diagnosis result of the leaf to be diagnosed and the actual growth state are verified, and the data obtained thereby are used as a reference. It is also possible to update the growth diagnosis diagram
It is effective for making a more accurate diagnostic method.

Of course, such a growth diagnosis diagram must be prepared and placed for each tree or plant. However, computerization, including search, collation, and updating, allows for more rapid growth diagnosis. It becomes possible.

Although the present invention has been described with reference to a tree as an example, those skilled in the art can fully understand from the above description that any of the plants that have a respiratory action can be applied.

Here, from a practical point of view, the following convenience is obtained by employing the diagnostic method according to the present invention. The growth condition of indoor planted trees can always be properly grasped and reflected in management. Poorly grown trees can be detected and eliminated before transplantation. When purchasing a tree, it can be inspected based on its growing condition. The above-mentioned can be performed quickly and easily without any specialized knowledge or many years of experience.

[0027]

As described above, according to the present invention, it is possible to detect the deterioration of the growth state of a tree before the appearance of the tree, and particularly to a tree (Atrium or the like) for which the deterioration of the tree is a problem. It is considered to be an effective technique for managing indoor planted trees. Further, at present, no other diagnostic method before appearance can be found, so that technical substitutes cannot be used. Therefore, from this point of view, the practical significance of the present invention is considered to be great.

[Brief description of the drawings]

FIG. 1 is a diagram showing the growth diagnosis in Shirakashi made according to the present invention.

FIG. 2 is a flowchart of a growth diagnosis method according to the present invention.

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[Procedure amendment]

[Submission date] March 15, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

Here, the present invention is as follows. (1)
Determined respiratory rate of the leaves of a plant to be diagnosed, a method of diagnosing a state of growth of plants based on the correlation between leaf weight per unit area of the leaves.

Claims (2)

[Claims] 1. determining the respiration rate of the leaves of the plant to be diagnosed,
A method for diagnosing tree growth based on correlation with leaf weight per unit area. 2. For one plant, the relationship between the leaf weight per unit area and the respiration rate is determined for healthy plants and leaves of the diseased plant, and a growth diagnosis diagram is created, and based on the obtained growth diagnosis diagram. To diagnose the growth status of plants.