The organic fertilizer using the polising sand and the producing method thereof

摘要

PURPOSE: An organic fertilizer using clay sand and its preparation method are provided, which is used to prevent the physiological defect or error of soil due to the use of an organic fertilizer of high concentration or a domestic animal excrement and to neutralize the soil. CONSTITUTION: The method comprises the steps of adding 20-30 wt% of white clay sand or yellow clay sand to cow excrement, pig excrement or hen excrement and mixing them with stirring; adding 15-20 wt% of the pulverized rice hulls or rice bran to the mixture; naturally drying the mixture for about 3 weeks in the place of good ventilation to ferment it and to reduce the water content to 40-50 %.