USING METHOD OF VOLCANIC ROCK ASHES AS GROUND LAYER OF LAWN FIELD

摘要

PURPOSE: A using method of volcanic rock ashes are provided to reduce the material, time, the expenses when making a lawn field. CONSTITUTION: A using method of volcanic rocks ashes constituting the volcanic rocks ashes of diameter 10mm into the thickness of more than 50mm; more than 50% of volcanic rocks ashes while mixing the volcanic rocks ashes with soil.