음식물류 폐기물 혼합 유기질비료를 이용한 벼 생산성 증대와 양분 손실 감소 간의 상충관계

Abstract

The increasing issue of food waste necessitates solutions that prioritize resource recycling and environmental sustainability. This study evaluated the effects of combining food waste-derived organic fertilizer with inorganic fertilizer on rice productivity, nutrient utilization efficiency, and water pollution. The experiment included seven treatments: a control group (Control), a nitrogen-only treatment (PK), a standard inorganic fertilizer treatment (NPK), a full organic fertilizer treatment (OA), an organic fertilizer mixed treatment (MFW), and combinations of NPK+OA and NPK+MFW. Results showed that the organic fertilizer treatment zones (OA, NPK+OA) had significantly lower soil pH after harvest compared to other treatments, while soil electrical conductivity (EC) was higher (p<0.05). Additionally, organic fertilizer-containing zones exhibited 124% and 106% greater water retention and nutrient uptake capacity, respectively, compared to the NPK treatment. The water productivity index was highest in the NPK+MFW treatment, reaching 138%. Nitrogen concentrations in water were highest in the NPK treatment (11.3 mg L⁻1 on average) but decreased significantly to 6.1–9.6 mg L⁻1 in the organic fertilizer treatments. In conclusion, the combined use of inorganic fertilizers and food waste-derived organic fertilizers in rice cultivation provides an optimal strategy for enhancing productivity while ensuring environmental sustainability