Binderless board made from composted rice straw as substrate for rice seedlings

A binderless board was produced from mechanically dissociated compost straw via suction filtration. The applied to replace the topsoil that is currently used predominantly as substrate for rice seedlings in China. showed highest tensile strength when had been composted 20 days. bulk density, aeration, and total porosity of an increasing trend with composting time, due increased decomposition straw. examination growth parameters root morphology electrical conductivity (EC), pH, nutrient content made 10 days were conducive seedlings. Polyphenols inhibited seedling height shoot weight promoted stem diameter weight. Considering quality loss, index, board, optimal condition. These results indicate can top soil peat seedling.