Abstract
The amount of irrigation water can be calculated based on the irrigation schedule in irrigation manual. At present, the maximum irrigation manual, which was developed in 1999 for the maximum yield with maxmum irrigation, is using. Now the water saving irrigation manual for red pepper, without decrease of crop yield, has been developded in 45 areas of korea. Among 45 regions, 9 regions which were selected respectively from 9 Provinces of Korea, were used for this study. The water saving irrigation manual has been used easily without soil sampling and measurement of soil water status. The objective of this study is to assess the possibility of the saving of irrigation water compared to the maximum irrigation manual. The average potential evapo-transpiration (PET) during 30 years in 9 region for the red pepper cultivation was a $2.69mm\;day^{-1}$. The saving amount of irrigation water for red pepper cultivation by saving irrigation manual compared to the maximum irrigation manual in a year was 309.4 mm, 303.3 mm and 309.5 mm in the soil of Sandy Loam (SL), Loam (L) and Silty Loam (SiL), respectively. The average saving amount of irrigation water for red pepper cultivation by saving irrigation manual compared to the maximum irrigation manual in a year was 307.4 mm.
1. 우리나라 9개도의 각 도별 중앙에 위치한 1개 지역을 대상으로 한 총 9개 지역의 최근 30년간의 기상자료 분석에 의한 고추 재배 기간인 5월~10월의 일평균 PET는 $2.69mm\;day^{-1}$ 이었다. 2. 노지재배 고추의 우리나라 9개 지역을 대상으로 한 기존의 물관리 지침서 및 물 절약형 물관리 지침서를 이용하여 산정한 고추의 재배 기간중 총 평균 관개량은 각각 594.1 mm, 286.7 mm 이었다. 3. 물절약형 관개 기준에 따른 토성별 물 절약량은 사양토 309.4 mm, 양토 303.3 mm, 미사질양토 309.5 mm 이었으며, 평균 307.4 mm 이었다.
