MATERIAL FOR IMPARTING PLANT GROWTH ENVIRONMENT, ITS PREPARATION PROCESS, SOIL COMPOSITION CONTAINING THE MATERIAL AND SOIL CONDITIONING PROCESS USING THE MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a material for imparting plant growth environment which is formed from a biodegradable resin extrusion foam, is biodegradable, requires no complex process for its preparation, processes a breathability and a water- retention property, allows controlled release of drugs and therefore yields improved soils allowing easy growth of plants. SOLUTION: The material for imparting plant growth environment is formed from a cellulose/acetate resin foam which is prepared by extruding an expandable resin composition containing a cellulose/acetate resin as an essential component and simultaneously expanding it by vaporization expansion of the moisture content. The material for imparting plant growth environment contains at least one bioactivity-related component selected chosen from an agrochemical, a drug for environmental protection and a fertilizer. Its preparation process and the process for soil conditioning are also provided.