양돈분뇨 액비 활용이 제주지역의 수질과 토양특성에 미치는 영향

Abstract

The purpose of this study is to analyze the effect of swine manure liquid fertilizer is handled associating with the water and soil contamination in Jeju island. Water quality and soil property were compared by dividing them into non agricultural normal area (Normal), swine manure liquid fertilizer applied area (Liquid) and chemical fertilizer used agricultural area (Chemical). The quality of groundwater appears to be the highest in Normal area, less higher in Liquid area and the lowest in Chemical area (p<0.01). The surface water quality were the highest as well in Normal area, less higher in Chemical area and the lowest in Liquid area (p<0.01). The nitric nitrogen level from the soil were fairly higher in Chemical area. Swine manure liquid fertilizer applied area showed half level of it. The levels of copper (Cu) and zinc (Zn) showed the highest in Liquid area but there was no significant difference from Normal area. Chemical fertilizer used agricultural area contained the lowest level of Cu and Zn (p<0.01). The present study demonstrates that using the swine manure liquid fertilizer is not the biggest cause of water pollution in Jeju island. Instead, it appears chemical fertilizer to be causing more pollution than using the swine manure liquid fertilizer, which calls us on the need of practical and detailed suggestions such as reducing the usage of chemical fertilizer or preparing alternative farming techniques.