Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)
- Volume 5 Issue 2
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- Pages.152-161
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- 1985
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- 2287-5824(pISSN)
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- 2287-5832(eISSN)
Effects of soil Moisture Levels on Growth and Dry Matter Accumulation of Sorghum and Corn II. Changes of dry matter accumulation and chemical composition
토양수분함량이 수수속작물과 옥수수의 생육 및 건물합성에 미치는 영향 II. 건물축적 및 성분함량의 변화
Abstract
To examine the effects of different levels of soil moisture on dry matter production and chemical compositions of sorghum cv. Pioneer 931, sorghum-sudangrass hybrid cv. Pioneer 988, sudangrass cv. Piper, and corn cv. Suweon 19. Soil moisture contents were maintained with approximately 100, 80 and 40% of field moisture capacity. The results are summarized as follows; 1. The highest dry matter yields per plant were found at 60% soil moisture level with 176.2g, 180.8g and 164.0g for pioneer 931, Pioneer 988 and corn, respectively. 2. Dry matter accumulation in accordance with soil moisture levels and growth stages of all crops except sudangrass were in the order of 60>40>80>100% soil moisture level. 3. The highest absolute growth rate (AGR) of sorghum, sorghum-sudangrass hybrid and corn was shown at 60% soil moisture level, that of sudangrass was shown at 80% soil moisture level. The relative growth rate (RGR) of all crops was high in the early growing stage and was low at maturity. The highest net assimilation rate (NAR) of all crops was found at 60% soil moisture level with
생육기간중(生育期間中) 토양수분함량(土壤水分含量)의 차이(差異)가 수수속작물(屬作物)의 건물생산(乾物生産)과 성분함량(成分含量)에 미치는 영향을 알기 위하여 공시작물(供試作物) 및 품종(品種)으로 수수의 Pioneer 931, 수수
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