Soil measuring instrument, soil measurement assisting device and method, recorded medium on which a program is recorded, recorded medium on which data is recorded, application amount controller, application amount determining device, method for them, and farm working determination assisting system

摘要

A model for determining the type of soil, the water content of a soil, and the soil properties, and a soil measurement data storage portion ( 60 ) to store therein measurement data necessary to carry out the model and correlated with specific measurement conditions are provided. The water content is measured by a water content measuring portion ( 57 ) on the basis of the measurement data fed from a soil sensor (S). The type of soil is determined by a feature extracting portion ( 56 ) and a type-of-soil determining portion ( 58 ), and the determined type of soil is sent to a determining portion ( 59 ). The determining portion ( 59 ) determines corresponding conditions and a model according to the type of soil and water content of the measured place received and sets them in a predetermined processing portion. The soil sensor feeds measurement data meeting the measurement conditions to a measurement information processing portion ( 55 ), and the processing portion ( 55 ) determines the soil properties according to the determined model.