MEASURING APPARATUS FOR TREE MOISTURE STRESS

PROBLEM TO BE SOLVED: To estimate a moisture stress state in which influences of the nature of leaves or the like are reduced, in a method for reading a moisture stress state of a plant from a change in green leaf spectral characteristics.SOLUTION: An apparatus for measuring spectral reflection char...

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1. Verfasser:	HYODO RYUJI
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED FISHING FORESTRY HORTICULTURE HUMAN NECESSITIES HUNTING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING TRAPPING WATERING
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Zusammenfassung:	PROBLEM TO BE SOLVED: To estimate a moisture stress state in which influences of the nature of leaves or the like are reduced, in a method for reading a moisture stress state of a plant from a change in green leaf spectral characteristics.SOLUTION: An apparatus for measuring spectral reflection characteristics in any arbitrary part on a surface of an object to be measured is used to scan spectral reflection characteristics of a tree surface that is an object to be measured, in a straight line. Only a required spectral reflection characteristic is selected from the arrangement of the spectral reflection characteristics obtained by this scan and averaging processing is performed thereon, thereby determining green leaf spectral reflection characteristics of the whole tree. Further, a moisture stress state is measured from the green leaf spectral reflection characteristics of the whole tree.