[논문]사막토양 환경에서 벼 재배시 관개방법에 따른 생육 및 수량 특성

정기열; 이상훈; 정재혁; 전현정; 채세은; 김상윤; 전승호

doi:10.7740/kjcs.2022.67.3.147

사막토양 환경에서 벼 재배시 관개방법에 따른 생육 및 수량 특성
Effect of Irrigation Methods on the Growth and Yield of Rice in Desert Climates 원문보기

Korean journal of crop science = 韓國作物學會誌, v.67 no.3, 2022년, pp.147 - 154

정기열 (국립식량과학원) , 이상훈 (국립식량과학원) , 정재혁 (국립식량과학원) , 전현정 (국립식량과학원) , 채세은 (순천대학교 생명자원학과) , 김상윤 (순천대학교 생명산업과학대학 농생명학과) , 전승호 (순천대학교 생명산업과학대학 농생명학과)

초록
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본 연구는 사막기후에서 벼 재배시 관개방법 및 관개량에 따른 벼의 생육 및 수량 특성을 알아봄으로써 적정 관개량 선정 및 사막기후환경에서 벼 관개시설 재배에 대한 기초자료로 활용하고자 수행한 결과는 다음과 같다. 관개방법별 총 관개량에서는 스프링클러 > 지표점적 > 지중점적 순서로 관개량이 많았고, 지중점적 FC80% 처리구에서 627 ton/10a로 관개량이 가장 적었으며, 관개량이 가장 많았던 스프링클러 FC120% 처리구 1,584 ton/10a 대비 60.4% 더 적은 것으로 조사되었다. 관개방법에 따른 쌀 수량에서는 지중점적 > 지표점적 > 스프링클러 순이였으며, 그 중 지중점적 FC120% 처리구에서 665 kg/10a로 관행구 대비 88.1%로 관수방법에서 가장 높은 수량성을 보였다. 따라서, 사막기후환경에서 벼 재배시 지중점적관개로 FC120% 처리 할 경우 물의 이용효율을 높이면서, 작물 수량증대에 유리할 것으로 사료된다.

Abstract ▼ AI-Helper

This study was conducted by directly sowing Asemi in late April at 30 × 10 cm intervals to determine the optimal irrigation method and irrigation amount to maximize the use of limited agricultural water and to increase the yield when growing rice in a desert climate. Conventional irrigation (Conv.), surface drip irrigation (Sur), subsurface drip irrigation (Sub.), and sprinkler irrigation (Spr.) methods were used. The following amounts of irrigation were tested based on field capacity (0.33 bar): 80% (V/V, FC80), 100% (FC100), and 120% (FC120), and data for 2 years were averaged. The total amount of irrigation by irrigation method was the lowest, at 627 ton/10 a, for Sub. irrigation with the FC80 treatment, which was 60.4% less than the amount of irrigation with the FC120 treatment (1,584 ton/10a). Sub. irrigation with the FC120 treatment gave the greatest amount of rice, at 665 kg/10 a, and this condition obtained a yield of 88.1% (754 kg/10 a) of the yield obtained with the conventional treatment. Therefore, when planting rice in a desert climate, subsurface drip irrigation at 120% of field capacity is considered advantageous to increase water use efficiency and crop yield.

주제어

표/그림 (8)

표 Table 1. Physical and chemical property of lysimeter soil.
그림 Fig. 1. Lysimeter model schematic (A: surface drip irrigation, B: subsurface drip irrigation, C: sprinkler irrigation).
그림 Fig. 2. Changes in soil moisture and rainfall by irrigation method.
그림 Fig. 3. Comparison of irrigation amounts by irrigation method (Sur.: surface drip irrigation, Sub.: subsurface drip irrigation, Spr.: sprinkler irrigation, FC: field capacity).
표 Table 2. Growth characteristics effected by irrigation amounts and method in rice.
그림 Fig. 4. Rice yield by irrigation method, compared with the conventional method. Non.: non irrigation, Conv.: conventional, Sur.: surface drip irrigation, Sub.: subsurface drip irrigation, Spr.: sprinkler irrigation, FC: field capacity.
표 Table 3. Yield components effected by irrigation (field moisture capacity) amounts and method in rice.
표 Table 4. Correlation of growth and yield characteristics by irrigation (field moisture capacity) amounts and method in rice.

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