GROWTH-DEGREE MEASURING DEVICE FOR BEING INSTALLED ON MOBILE BODY

摘要

PROBLEM TO BE SOLVED: To provide a growth-degree measuring device for being installed on a mobile body, having a simple structure and making a growth diagnosis in a short time. SOLUTION: The growth-degree measuring device for being installed on a mobile body is installed on a mobile body HE movable over a farm field to measure the growth degree of plants. The device is provided with the following: a first photoreception part 10 subjecting sunlight reflected from the plants in the farm fields to spectroscopic treatment and receiving the spectral light so as to measure the photoreception intensity of at least two kinds of specific wave length; a second photoreception part 20 subjecting sunlight to spectroscopic treatment into the same wave length as that in the first photoreception part and measuring the photoreception intensity; and a calculation part 30 determining a growth index of the plants based on the light intensity measured by the first photoreception part and the light intensity measured by the second photoreception part. The device is simply structured and extremely conveniently makes plant-growth diagnosis because the first photoreception part only measures the light intensity of the sunlight reflected from the whole of a plant community growing in the farm field specified as a measuring object. COPYRIGHT: (C)2007,JPO&INPIT