자연강우에 의한 간척지토양의 이화학적 특성변화 = Changes of physico - chemical properties in the reclaimed tidal land soils by precipitation

다국어 초록 (Multilingual Abstract)

Changes of chemical properties by times of the reclaimed tidal land soils and soil surface water, underground infiltration water with precipitation-runoff on natural meteological condition in the unripened tidal reclaimed paddy fields were investigated. This study was carried out to use environment-friendly farm land in the reclaimed tidal lands. The soils used in this study were saline-alkaline soils with the high Na^+ and Mg^++ content. As the results of investigation outflow loading of nutriments through outflow water in the unripened tidal reclaimed paddy fields by precipitation during the survey period, nutriments equivalent to T-N 1∼2 kg 10a^-1 and T-P 0.01∼0.02 kg 10a^-1 from in the unripened tidal lands were discharged. Besides, the results of comparison losses of cation through outflow water showed Na^+＞K^+＞Mg^++＞Ca^++, and the highest appeared water discharge of Na^+. In case of saemangeum reclaimed tidal land soils water discharge of cations showed Ca^++ 1.3 kg 10a^-1, Mg^++ 1.6 kg 10a^-1, Na^+ 17.7 kg 10a^-1, and K^+ 3.2 kg 10a^-1 respectively. On the other hand, in case of koheung reclaimed tidal lands soils water discharge of cations showed Ca^++ 18.1 kg 10a^-1, Mg^++ 31.2 kg 10a^-1, Na^+ 320.8 kg 10a^-1, and K^+ 51.2 kg 10a^-1 respectively.