| 简介 |
PURPOSE : Provided is a method for preparing a top soil for the transplantation of wood by using the fermented sawdust of wood and food waste, the earth and sand generated in production of circulating aggregate of construction waste and the inorganic sludge in sand washing process.
CONSTITUTION : The method comprises the steps of adding 10-15 % of a nitrogen component to the chip with a size of 10-30 mm of wood waste and wood root generated in wood cutting to maintain the C/N ratio to be 10-50, maintaining moisture content to be 60% by using food waste, fermenting it at 40-50 deg.C, and maintaining it for 2-7 days to allow 3% salt contained in the food waste to be degraded; pulverizing the firstly fermented one into a size of 1-2 mm, maintaining the C/N ratio to be 15-20 and moisture content to be 60%, mixing it with the earth and sand generated in production of circulating aggregate of construction waste and the inorganic sludge in water treating process, and fermenting the mixture at 40-50 deg.C for 15-20 days; and analyzing the organic top soil component and adding deficient five components (N, P, K, Mg and Ca) with maintaining the moisture content to be less than 15%.
© KIPO 2005 |
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