관개수질을 고려한 시비가 벼의 생산성과 농업환경에 미치는 영향 = Effect of Fertilizer Application Level considering Irrigation Water Quality on Rice (Oryza sativa L.) Productivity and Agricultural Environment

국문 초록 (Abstract)

관개수 수질을 고려한 감비가 벼의 생산성과 농업환경에 미치는 영향을 분석한 결과는 다음
과 같다. 시험에 사용된 관개수의 질소, 인, 칼륨의 평균함량은 각각 6.16, 0.26, 9.37 ㎎/L 이
었고, 유입된 영양염류가 논을 통과하면서 농도가 감소되어 유출수의 성분은 유입된 관개수
보다는 낮은 농도를 보였으며, 논 표면수와 침출수의 농도는 시비량과 시비시기에 따라 변
화하였다. 토양검정 50% 시비구에서는 질소의 공급량과 소비량간의 차이가 0.14㎏/ha으로
나타나 양분수지면에서 균형을 이룬 반면, 농가관행시비구에서는 그 차이가 95.3㎏/ha로 나
타났다. 농가관행시비구에 비해 토양검정시비구와 토양검정50% 시비구는 등숙률, 천립중,
도정특성, 등이 우수하여 완전미수량에서 큰 차이를 보이지 않았으며, 시비량이 적을수록 단
백질 함량이 또한 적어 기계적인 식미치가 높게 나타나 품질에서 우수하였다. 시비효율에서
는 토양검정50% 처리에서 시비된 성분이 수량에 기여하는 비율이 높아서 시비이용과 효율
면에서 우수한 결과를 보였다. 이상과 같이, 관개수에 포함된 영양물질을 작물의 생육에 이
용함으로서, 농업용수의 수자원 이용효율을 높이는 동시에, 비료 절감효과와 생산량 증대의
가능성을 검토할 수 있었다.
Table 11.Physicochemical properities and paratability of milled rice in the different
fertilization
▷표삽입◁ (원문을 참조하세요)

다국어 초록 (Multilingual Abstract)

This study was conducted to investigate the effect on agricultural environment and crop productivity by different amount of applied fertilizer in consideration of irrigation water quality. N, P and K contents of irrigation water used in this eqdment were 6.16, 0.26 and 9.37 ㎎/L, reqecthly. N, P and K Concentrations of runoff water were lower than those of inflow water during rice cultivation. N, P and K Concentrations of ponded and percolated water were changed according to the amount and time of applied fertilization. During rice cultivation in paddy soil, nitrogen balance was closed to 0 in STF 50% (50% level of sail testing fertilizaton), 0.14 ㎏/ha, but it was 95.3 ㎏/ha in CF (conventional fertilization) treatment in STF 50% and STF (sail testing fertilization) treatment, yield of perfect rice was not greatly different as compared with CF treatment, due to the superiority of ripening rate, 1,000 grains weight and milling characteristics.
Mechanical paratability of rice was excellent in NF (non fertilization) treatment, STF 50% treatment showed higher in nutrient availabiilty and fertilizers use efficiency than other treatments.

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