KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)
- Volume 35 Issue 4
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- Pages.328-333
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- 1990
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- 0252-9777(pISSN)
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- 2287-8432(eISSN)
Quantitative Analysis of Dry Matter Production and its Partition in Rice III. Partitioning of Dry Matter Affected by Planting Density
수도의 건물생산 및 배분의 수리적 연구 III. 재식밀도에 따른 부위별 건물배분
- Cho, Dong-Sam (College of Agriculture, Chungbuk National Univ.) ;
- Jong, Seung-Keun (College of Agriculture, Chungbuk National Univ.) ;
- Heo, Hoon (College of Agriculture, Chungbuk National Univ.) ;
- Yuk, Chang-Soo (College of Agriculture, Chungbuk National Univ.)
- Published : 1990.08.01
Abstract
In developing dynamic growth model of a crop, it is important to estimate accurate dry matter partition to different parts of crop plants. Two rice varieties, Samkang and Chucheong, were transnplanted with three planting densities of 72. 90 and 120 hills per 3.3㎡ on May 30 and June 15 in 1988 to study the effect of planting density on dry matter partition in rice plants. Total dry wight per square meter of two varieteis in May 30 transplanting were greater than those in June 15 transplanting. Total dry wights were increased as planting density was increased. The response of dry weights of differents parts of rice plants per hill were decreased as the density was increased. Although the difference in dry weights of leaf blade and stem and sheath between two varieties was not great, greater ear weight of Samkang resulted in greater total dry weight than that of Chucheong. Despite of transplant in date and planting density on dry weights, the ratio of dry matter partition to different parts of rice plants at a certain growth stage remained constant. Estimated dry weights of different parts at two stages of growth based on average ratio of dry matter partition over two transplantion dates and planting densities agreed well with those observed.
재식밀도가 수도의 부위별 건물의 배분에 미치는 영향을 검토하고자 통일계인 삼강벼와 일반계인 추청벼를 1988년 5월 30일과 6월 15일에 3.3
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