간척지 토양에서 벼 재배시 염농도별 완전 낙수시기

최원영,이규성,고종철,문상훈,김정곤,Choi Weon-Young,Lee Kyu-Seong,Ko Jong-Cheol,Moon Sang-Hoon,Kim Chung-Kon 한국작물학회 2005 Korean journal of crop science Vol.50 No.suppl1

본 연구는 남서해안 간척지에서 토양 염농도(저염; $0.1\%$, 중염; $0.3\~0.4\%$)별로 쌀 품질 향상을 위한 완전 낙수시기를 구명하기 위하여 시험한 결과를 요약하면 다음과 같다. 1. 저염토양에서의 완전낙수시기에따라 $m^2$당 립수가 비슷하여 쌀 수량은 유의차가 없었다. 중염토양에서는 완전낙수시기가 빠를수록 염피해를 받아 등숙비율이 낮아져, 쌀 수량은 출수후 30일까지는 감수하였고 35일 이상에서는 같았다. 2. 토양 염농도간의 쌀 수량은 중염 토양에서 저염 토양의 $64\%$ 수준으로 감소하였다. 3. 저염 토양에서 완전미 비율이 높았으나 현미품위는 처리농도간에 차이를 볼 수 없었다. 4. 2002년 기상은 완전낙수시기에 잦은 강우로, 2003년에는 생육기 저온으로 인하여 완전 낙수시기를 결정하기 어려웠지만 수량 및 도복 등을 고려해 볼 때 저염 토양에서는 출수 후 $20\~40$일에, 중염 토양에서는 출수 후 $35\~40$일에 완전낙수하는 것이 안전할 것으로 생각된다. This study was conducted to identify the effective dyainage-time influencing rice yield and grain quality on a reclaimed saline soil, the experiment conducted at the Gyehwado substation of the Honam Agricultural Research Institute from 2002 to 2003. The experimental field contained $0.1\%\;and\;0.3\~0.4\%$ NaCl in soil solution, respectively. The experiment involved salinity levels as main plot and sub-plot where consisted of 6 treatments in a split plot design with three replicates. Rice yield performance showed a maximum at drainage-time for 35 days after flowering under medium salinity level, but indicated only $64\%$ of yield level compare to low soil salinity. Percentage of well-shaped rice was high in low soil salinity indicating there aye severe affection for grain quality in medium soil salinity regardless water drainage-time.

연구보문 : 쌀 품위 향상을 위한 중대립 "다미"의 적정 이앙시기 규명

최원영 ( Weon Young Choi ),최민규 ( Min Kyu Choi ),구본일 ( Bon Il Ku ),박홍규 ( Hong Kyu Park ),김영두 ( Young Doo Kim ),고종철 ( Jong Cheol Ko ),고재권 ( Jae Kwon Ko ),유진희 ( Jin Hee Ryu ),김시주 ( Si Ju Kim ) 韓國國際農業開發學會 2009 韓國國際農業開發學會誌 Vol.21 No.3

벼 휴립건답직파 절수재배에 알맞은 질소 분얼비 시비량

최원영(Weon Young Choi),김상수(Sang Su Kim),송동석(Dong Seog Song),최선영(Sun Young Choi) 한국농림기상학회 2001 한국농림기상학회지 Vol.3 No.2

This study was conducted to identify the optimum proper nitrogen (N) application rate for tillering in ridge direct seeding on dry paddy of rice culture. During 1998, a series of experiments was carried out at paddy field (Chonbuk series) of the National Honam Agricultural Experiment Station, RDA using Dongjinbyeo. Leaf area index and top dry weight increased with higher N levels, especially in the 100 kg/ha seeding rate compared with the 60 kg/ha seeding rate. N use efficiency increased at increased by 50~75% of the N topdressing rate at tillering. Heading date, ripened grain rate, and 1,000-grain weight of brown rice did not vary among the rate of topdressing for tillering and seeding rates. The highest grain number per unit area was at the level of increased by 75% in N topdressing at tillering stage. Milled rice yield increased 5% at the 60 kg/ha seeding rate and increased 16~17% at the 100 kg/ha seeding rate at increased by 50~75% of topdressing N compared with 48 kg/ha top-dressed N of 60 kg/ha seeding rate.

연구보문 : 벼 이앙재배에서 재식밀도간 질소분시방법에 따른 수량과 미질

최원영 ( Weon Young Choi ),최민규 ( Min Kyu Choi ),고종철 ( Jong Cheol Ko ),김영두 ( Young Doo Kim ),양창휴 ( Chang Hyu Yang ),김택겸 ( Tack Kyum Kim ),김시주 ( Si Ju Kim ) 한국국제농업개발학회 2010 韓國國際農業開發學會誌 Vol.22 No.4

호남평야지에서 중대립 "다미"의 수량 및 품질 향상을 위한 적정 재식밀도 및 질소분시방법을 구명하기 위하여 2007년과 2008년까지 익산 호남농업연구소에서 수행한 내용을 요약하면 다음과 같다. 가. 출수기는 8월 19일로 재식밀도 및 질소분시방법간 차이가 없었다. 나. 재식밀도간 쌀수량과 심백미율은 비슷하였고, 완전미율 은 18.2주가 24.2주/m2 이앙보다 많았으며, 질소분시방법간 쌀 수량은 30:20:50>50:20:30>70:0:30% 순으로 많아 최고수량은 재식밀도 24.2주/m2 이앙에서 질소분시방법은 50:20:30% 이었으며, 백미완전미율은 50:20:30% 분시에서 높았고 단백질함량은 50:20:30<70:0:30<30:20:50% 순으로 낮았다. 이상의 결과로 볼 때, 중대립 "다미"의 품질 향상을 위한 적정 재식밀도는 24.2주/m2 이앙이고 질소분시방법은 50:20:30% 이었다. This study was conducted to establish an optimum planting density and nitrogen split ratio for the improvement yield and quality of transplanting rice in Honam plain region. Field trials were undertaken with rice cultivar "Dami" in experimental paddy fields, located at Iksan, of National Institute of Crop Science in 2007 and 2008. Over two seasons, there were two levels of planting density 18.2 and 24.2 hills m-2 and three levels of nitrogen(N) split application ratio of 30:20:50%, 50:20:30% and 70:0:30%, transplanting:2nd topdressing at tillering stage:3rd topdressing at panicle initiation stage, respectively, of total N(9g m-2) applied. There was no significant in plant growth and yield components by N split ratio under different planting density, and rice yield and the ratio of white core were similar in planting densities. The head rice ratio was higher in 18.2 than 24.2 hills m-2. The rice yield by nitrogen split ratio was higher in the order of 30:20:50>50:20:30>70:0:30%. The top yield of head rice was in 24.2 hills m-2 of planting density with 50:20:30% of nitrogen split ratio. Head rice ratio was highest in 50:20:30% of nitrogen split ratio. The protein content was low in the order of 50:20:30<70:0:30<30:20:50%. These results suggest that an optimum planting density was 24.2 hills m-2 with N split application ratio of 50:20:30%.

벼 휴입한답직파 절수재배에 알맞은 질소 수비량

최원영(Weon Young Choi),박홍규(Hong Kyu Park),이기상(Ki Sang Lee),김상수(Sang Su Kim),이재길(Jae Kil Lee),김순철(Soon Chul Kim),최선영(Sun Young Choi) 한국농림기상학회 2001 한국농림기상학회지 Vol.3 No.4

This study was conducted to identify the optimum nitrogen (N) fertilization at panicle initiation stage on ridge direct seeding on dry paddy of rice. During 1999~2000, a series of experiments was carried out at field (Chonbuk series) of the National Honam Agricultural Experiment Station, RDA using Dongjinbyeo. Plants were taller, and leaf area index and top dry weight increased with more N fertilization at panicle initiation stage. Photosynthetic rate of heading stage was higher at higher amounts of N fertilization at panicle initiation stage, especially in 6㎏/10a compared with 10㎏/10a seeding rate. Lodging index and its related traits did not significantly differ under different rates of N fertilization at panicle initiation stage. N uptake of the rice plant increased as more N fertilization at panicle initiation stage. N use efficiency was highest under the standard topdressing rate at 6㎏/10a seeding rate. Panicle number per ㎡ increased with more topdressed N, but ripened grain rate and 1,000-grain weight of brown rice did not differ with an increase in topdressed N. Milled rice yield was 6% higher in the 6㎏/10a seeding rate and 13% higher in the 10㎏/10a seeding rate at 50% more topdressed N compared with 4.8㎏/10a N fertilization at panicle initiation stage of 6㎏/10a seeding rate.

절수관개방법이 벼 수량 및 품질에 미치는 영향

최원영 ( Weon Young Choi ),박홍규 ( Hong Kyu Park ),문상훈 ( Sang Hoon Moon ),최민규 ( Min Gyu Choi ),김상수 ( Sang Su Kim ),김정곤 ( Chung Kon Kim ) 한국농림기상학회 2006 한국농림기상학회지 Vol.8 No.3

신간척지에서 벼 기계이앙재배시 적정 질소시비량 구명

최원영 ( Weon Young Choi ),정재혁 ( Jae Hyeok Jeong ),김선 ( Sun Kim ) 한국국제농업개발학회 2014 韓國國際農業開發學會誌 Vol.26 No.3

This study was conducted to identify the optimal nitrogen amount of rice transplanting cultivation in newly reclaimed land, in light of minimum salt damage and high yield of rice. The nitrogen amount treatments were 11 kg/10 a, 14 kg/10 a, 17 kg/10 a, 20 kg/10 a and diagnostic fertilization. The average of soil salinity fell from 0.06% to 0.03% during 2 years after flooding and rice transplantation. The heading date was August 16 nitrogen at rate of 11 kg/10 a and 14 kg/10 a, August 17 at 17 kg/10 a and 20 kg/10 a. The lodging index tended to rise in proportion to nitrogen application amount; any of rice plants were not lodged at 11 kg/10 a, but the lodging index was 1 and 3 at 14 kg/10 a and 17 kg/10 a respectively. At 20 kg/10 a, however, over half of rice plants were lodged with the lodging index 7. The panicle number per hill was the highest at 17 kg/10 a, followed by the diagnostic fertilization, 20 kg/10 a, 14 kg/10 a and 11 kg/10 a. The percentage of ripened grains was similar to the weight of 1,000 grains of brown rice, and thus the rice yield was the highest at the diagnostic fertilization and at 17 kg/10 a equally, followed by 14 kg/10 a, 20 kg/10 a and 11 kg/10 a. The percentage of perfect kernels was the highest at 14 kg/10 a, followed by the diagnostic fertilization and 11 kg/10 a, 17 kg/10 a, and 20 kg/10 a. The amylose content was not significantly different by nitrogen application amount, but the protein content was closely correlated with it. Altogether, the optimal nitrogen application amount was found to be 16 to 18 kg/10 a on the premise that rice seedlings would be mechanically transplanted in newly reclaimed land.

남부산간고랭지에서 쌀 품질 향상을 위한 적정 이앙시기

이준희,최원영,남정권,김상수,박홍규,백남현,최민규,Lee Jun-Hee,Choi Weon-Young,Nam Jeong-Kwon,Kim Sang-Su,Park Hong-Kyu,Back Nam-Hyun,Choi Min-Gyu 한국작물학회 2005 Korean journal of crop science Vol.50 No.suppl1

남부 산간고랭지인 운봉에서 고품질 쌀 생산을 위한 재배기술을 확립하고자 $2002\~2004$년에 삼천벼와 상미벼를 공시하여 적정 이앙시기를 검토하였는데, 이들 시험결과를 요약하면 다음과 같다. 1. 단위면적당 영화수는 생태형에 관계없이 이앙시기가 빠를수록 많은 경향이었다. 2. 등숙비율은 삼천벼는 5월 21일 이앙에서 높았으나 상미벼는 조기 이앙할수록 높았다. 3. 완전미 수량은 삼천벼는 5월 21일 이앙에서, 상미벼는 5월 1일 이앙에서 가장 많았다. 4.완전미 수량, 등숙비율, 미질 등을 고려한 이앙적기는 조생종은 5월 21일, 준조생종은 5월 1일로 판단된다. The characters associated with the quality of rice and the factors involved in the production of high quality rice as the proper transplanting time was examined at Unbong the southern alpine area from 2002 to 2004. The rice cultivars tested were Samcheonbyeo (Early maturing one), Sangmibyeo (Sub-early maturing one). The number of spikelets were increased as earlier the transplanting date in all cultivar, The ripened grain rates were highest transplanted on May 21 for Samcheonbyeo, and May 1 for Sangmibyeo. The highest head rice yield was obtained when transplanted on May 21 and May 1 for Samcheonbyeo and Sangmibyeo, respectively. The optimum transplanting dates according to maturing types with respect to the yield of head rice, ripened grain rates and rice quality were May 21 for early maturing type and May 1 for sub-early maturing type.

서남부 간척지에서의 고품질 쌀 생산을 위한 적정 이앙시기

백남현,최원영,고종철,남정권,박홍규,정진일,김상수,박광근,Back Nam-Hyun,Choi Weon-Young,Ko Jong-Cheol,Nam Jeong-Kwon,Park Hong-Kyu,Choung Jin-Il,Kim Sang-Su,Park Kwang-Geun 한국작물학회 2005 Korean journal of crop science Vol.50 No.suppl1

서남부 간척지에서의 고품질 쌀 생산을 위한 생태형별 적정이앙시기를 구명하고자 2002년부터 2004년까지 호남농업연구소 계화도출장소 시험포장 문포통(세사양토, 토양 염농도 $0.1\%$)에서 삼천벼, 화성벼, 남평벼를 공시하여 이앙시기별 벼생육, 수량구성요소, 수량 및 품질 관련형질을 검토한 결과를 요약하면 다음과 같다. 1. 단위면적당 영화수는 생태형에 관계없이 이앙시기가 빠를수록 많은 경향이었다. 2. 삼천벼의 등숙비율은 조기이앙에서, 화성벼는 6월 9일 이후 이앙에서 높았다. 3. 완전미 수량은 삼천벼와 화성벼는 이앙시기가 빠를수록 많았고 남평벼는 5월 30일 이앙에서 많았다. 4. 따라서 완전미 수량, 등숙비율, 미질 등을 고려한 이앙적기는 조생종은 5월 20일$\~$5월 30일, 중생종과 중만생종은 5월 30일$\~$6월 9일로 판단된다. This experiment was carried out to identify the proper transplanting time at reclaimed saline land in the southwestern area of Korea from 2002 to 2004. The rice cultivars tested were Samcheonbyeo(Early maturing one), Nampyeongbyeo (Medium maturing one) and Hwaseongbyeo(Mid-late maturing one). The results are summarized as follows: No. of spikelet per the unit area was higher at transplanting on May 20 than those of the other transplanting time. when Samcheonbyeo was transplanted early, the ripened grain rate was high. But, Hwaseongbyeo and Nampyeongbyeo wasn't differ among transplanting time. The yield of milled and head rice(YMHR) was high transplanted May 20 in Samcheonbyeo, May 30 in Hwaseongbyeo, from May 20 to June 9 in Nampyeongbyeo. Among the varieties YMHR was higher in the order of Hwaseongbyeo, Samcheonbyeo and Nampyeongbyeo. There wasn't different of amylose and protein content among the transplanting time and varieties. But, palatability value was low transplanted early(May 20). Considering the rice growth, the rice good quality, the yield of milled and head rice, the proper transplanting time was May 20 to May 30 in Samcheonbyeo and Hwaseongbyeo, whereas Nampyeongbyeo was from May 20 to-June 9.

서남부간척지 벼 담수표면직파 재배시 기비시용시기별 생육 및 수량

김영두 ( Young Doo Kim ),최민규 ( Min Kyu Choi ),백만기 ( Man Gee Baek ),구본일 ( Bon Il Ku ),강신구 ( Shin Gu Kang ),박홍규 ( Hong Kyu Park ),최원영 ( Weon Young Choi ),고재권 ( Jae Kwon Ko ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.4

Field experiment was carried out to identify the optimum time of basal application of nitrogen in Southwestern reclaimed saline land. Nitrogen application before seeding and 10, 20 & 30 days after seeding were evaluated with three nitrogen application levels(140, 170 & 200 kg/ha) in Munpo soil series having 0.1~0.2% of soil salinity. Nitrogen was split-applied with forestage; basal, tillering stage, flowering initiated stage and ripening stage by a ratio of 50-20-20-10%. Results reveled that seedling stands were considerably higher when basal nitrogen applied before seeding as compared to after seeding. Grain yield increased with increase of nitrogen application before seeding. Grain yield was the highest when nitrogen application was 170~200 kg/ha before seeding. Therefore, it is recommended that the optimum nitrogen application level was 170~200 kg/ha before seeding in direct seeded rice in southwestern reclaimed saline land for maximum plant establishment and grain yield.