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인공사막환경에서 벼 재배시 관개량에 따른 생육 및 수량 특성 변화
정기열,이상훈,정재혁,전현정,오승가,전승호,Jung, Ki-Youl,Lee, Sang-Hun,Jeong, Jae-Hyeok,Chun, Hyen-Chung,Oh, Seung-ka,Jeon, Seung-ho 한국작물학회 2021 한국작물학회지 Vol.66 No.3
본 연구는 사막기후에서 벼 재배시 지표점적관개 및 관개량에 따른 벼의 생육·수량 특성 및 물생산성을 알아봄으로써 적정 관개량 선정 및 사막기후환경에서 벼 관개시설 재배에 대한 기초자료로 활용하고자 수행한 결과는 다음과 같다. 1. 출수기 생육특성에서는 FL478, 아세미 모두 FC 100% 처리구에서 초장과 분얼수가 가장 길고, 많았고, 수확기 생육특성에서는 두 품종 모두 간장과 이삭장에서 FC 100% 처리구가 대조구에 비해 높거나 같았으나, 이삭수, 이삭당립수 및 등숙율은 대조구에서 가장 높았다. 2. 정조수량은 두 품종 모두 대조구에서 각각 1.40, 2.20 kg/Pot로 가장 높은 수량을 보였으며, 대조구 다음으로 FC 100%와 FC 120% 처리구가 대조구 대비 70% 이상으로 나타났다. 3. 관개량별 물생산성에서는 두 품종 모두 관개량이 가장 적었던 FC 80% 처리구가 각각 0.45, 0.63 kg/m<sup>3</sup>로 가장 높았고, 다음으로 FC 100% 처리구에서 각각 0.42, 0.59 kg/m<sup>3</sup>로 높게 나타났으나, 대조구 대비 약 14.3, 20.3% 더 높은 물생산성 평가를 보였다. 4. 상관관계를 분석한 결과 두 품종간에 천립중과 정조수량을 제외한 간장, 수장, 주당 이삭수, 등숙률에서는 상관관계가 인정되지 않았으며, 관개량별에 따른 상관관계에서는 간장 그리고 수량구성요소인 수당립수, 등숙률에서 높은 양의 상관관계가 나타났으며, 정조 수량 또한 상관관계가 나타났다. 따라서, 사막기후환경에서 벼 재배시 지표점적관개는 FC 100% 처리구가 일정 수량을 확보할 수 있고, 효율적인 관개량 관리도 가능할 것으로 사료된다. There is a growing interest in rice cultivation on farms with irrigation facilities in desert climates. We investigated the growth characteristics and yields of two rice cultivars (FL478 and Asemi) irrigated at field capacities (FCs) of 80%, 100%, and 120% in a lysimeter with coarse sandy soils. The results showed that at the heading stage, the FC 100% treatment had the highest plant height and number of tillers between the two cultivars. At the harvest period, the culm and panicle lengths of both cultivars at FC 100% were similar to those of the control. In contrast, the number of panicles, grain number per panicle, and percentage of ripened grains were the highest in the control. Moreover, FL478 and Asemi had the highest grain yields of 1.40 and 2.20 kg·pot<sup>-1</sup> in the control, respectively. For both cultivars, the grain yields of the FC 100% and FC 120% treatments were approximately 70% of the control. In comparison, FL478 and Asemi had the highest water productivity of 0.45 and 0.63 kg·m<sup>3-1</sup> for the FC 80% treatment, followed by the FC 100% treatment (0.42 and 0.59 kg·m<sup>3-1</sup>, respectively), which was nearly 14.3% and 20.3% higher than that of the control. Therefore, we found that irrigation at FC 100% is anticipated to be effective in managing surface drip irrigation for rice cultivation in desert climates in arid environments, while maintaining rice yields.
윤을수(Eul-Soo Yun),정기열(Ki-Youl Jung),박기도(Ki-Do Park),고지연(Jee-Yeon Ko),이재생(Jae-Saeng Lee),박성태(Sung-Tae Park) 한국토양비료학회 2009 한국토양비료학회지 Vol.42 No.3
논에서 전환된 포도원(전환포도원)의 전환 후 년수 및 토양특성별 물리적 특성변화 양상을 구명하여 전환지 생산성 향상을 위한 합리적 토양 관리대책을 제시코자 전환지가 많은 경북 김천, 영천지역을 중심으로 포도원과 인근 벼 재배지 50개 지점을 조사·분석한 결과 전환포도원의 이랑 높이는 토성이 세립질이고 배수가 불량할수록 높았고, 토양단면 내 반문의 출현깊이(Ap층 두께)는 조립질 토양에서 깊은 경향이었음. 전환지는 인근 유사토양 벼 재배지 작토층 토색의 경우 색상이 밝아지는 경향을 보여 회색도가 벼재배지의 경우 20인데 비해 전환지는 5로 감소했고,이 경향은 토양 배수조건이 양호한 토양에서 현저하였음. 전환여부에 따른 투기도 차이는 토심10cm 이하에서 현저했고 토심 30cm 이하에서는 뚜렷한 차이가 없었고 전환지에서 투기도에 미치는 토양특성의 영향은 세립질의 경우 이랑의 높이가, 조립질은 배수등급이었다. 전환포도원의 물리성은 전환 후 년수가 경과함에 따라 공극율과 내수성입단이 증가하는 경향이었고, 원추관입저항의 경우 휴립한 부위는 5kg/㎠ 이하인 반면, 그 이하의 부위는 10kg/㎠ 이상을 보였음. 이상의 결과로 볼 때 전환포도원의 토양특성은 세립질보다 조립질이 쉽게 변하는 경향이었고, 배수불량인 세립질토양에서는 고휴재배 등 적절한 표토관리가요구되었다. This study was conducted to develop rational soil management and enhance the productivity of lands converted from paddy soils. Specifically, the changes in the soil physical properties brought about by the change in land usage from paddy soil were evaluated. This was carried out from 1999 to 2001 at 50 site in large-scale converted paddy fields of Kimcheon, Youngcheon, Gyeongsan and Milyang in the Youngnam region, categorized according to soil texture and drainage class. The ridge height of converted paddy soils was higher in coarse-textured and poorly-drained soils than in fine-textured and well-drained soils. The gray color of the surface soil was of lesser degree in converted soils than paddy soils and more notable in welldrained soils. The porosity ratio and the formation of aggregate structure were higher, and the appearance of soil mottling was deeper in converted paddy fields than in paddy soils. The glaying layer "g" of surface soil degraded with time. The porosity and amount of water stable aggregate was found to increase with time after conversion. The penetration resistance of the converted paddy soil was lower and deeper with time after conversion. The soil aeration of the converted paddy soil was lower in sandy loam than in loamy soil. Furthermore, soil aeration was influenced by ridge height and drainage class in poorly-drained soils.
이창훈(Chang Hoon Lee),정기열(Ki Youl Jung),김선태(Sun Tae Kim) 한국토양비료학회 2012 한국토양비료학회지 Vol.45 No.6
담수조건으로 토양질소동태에 대한 결실기 자운영의 투입효과를 포트시험을 통해 평가하였다. 자운영의 투입에 따라 벼의 자운영유래 질소 이용율은 약 51-64%으로 자운영의 투입량이 높을수록 감소하였다. 수확기 토양의 자운영 질소는 약 3-5%가 저장되었고, 자운영 유래 질소의 손실은 각각 32.4와 44.1%를 차지하였다. 벼 수량 대비 자운영 30 Mg ha<sup>-1</sup> 시용은 질소추천시비량을 전량 대체할 수 있었다. Green manure cultivation affects soil productivity and nutrient conservation in paddy soil at winter season. This study was to evaluate nitrogen behavior released from chinese milk vetch (CMV) as green manure by using stable <sup>15</sup>N trace during rice cultivation. The CMV used in the experiment was 29.9 of C/N ratio and 14.1 g N kg<sup>-1</sup> (<sup>15</sup>N 0.388 atom % excess) and was applied at rates of 10 and 30 Mg ha<sup>-1</sup> in pot of 1/2000a size. Rice growth and N uptake increased with higher levels of CMV application at harvesting stage. Among total N uptake, 14.6 and 26.8 % of nitrogen was released respectively from the two different rates of CMV application. Stable <sup>15</sup>N recovery by rice biomass was 60%, 54% to the <sup>15</sup>N input, respectively, of CMV application, which decreased in order of grain, root, and straw of rice biomass. Total N content in the soil after rice harvest was 1.9 and 2.1 g N kg<sup>-1</sup>, respectively, with increasing N input by the different rates of CMV application and the rate of <sup>15</sup>N recovery derived from CMV in the soil was 3.8 and 4.8 %, respectively. N input by CMV application induced rice growth and productivity during rice cultivation. However, it might need proper managements to reduce N loss because about 36-41 % of nitrogen was lost from N input by CMV application.
내독소에 의한 혈관 내피세포 손상에서 혈관 내피세포로부터 유리된 산소기의 역할에 관한 연구
최형석 ( Hyung Seok Choi ),정기호 ( Ki Ho Jeong ),유철규 ( Chul Gyu Yoo ),김영환 ( Young Whan Kim ),한성구 ( Sung Koo Han ),심영수 ( Young Soo Shim ),김건열 ( Keun Youl Kim ),한용철 ( Yong Chol Han ),정기석 ( Ki Suck Jung ) 대한결핵 및 호흡기학회 1994 Tuberculosis and Respiratory Diseases Vol.41 No.4
최명은(Choe Myeong-Eun),김정인(Kim Jung-In),정태욱(Jung Tae-Wook),곽도연(Kwak Do-Yeon),김기영(Kim Ki-Young),고지연(Ko Jee-Yeon),우관식(Woo Koan-Si),송석보(Song Seok-Bo),정기열(Jung Ki-Youl),오인석(Oh In-Seok) 한국육종학회 2016 한국육종학회지 Vol.48 No.2
‘Nampungchal’ is a Sorghum bicolor L. developed and registered by Department of Sothern area crop science, NICS, RDA in 2012. This variety was developed through pure line breeding method from ‘Namhae’ landrace. ‘Nampungchal’ is a medium maturing variety having 68 days from planting to heading of sorghum in Miryang, Korea. The plant is pigmented(purple), the glumes and grains are red-brown with waxy endosperm. The panicle has less compact shape and the length is 23cm. The grain yield of ‘Nampungchal’ is about 2.28MT/ha that is higher 9%, when compared with standard variety ‘Hwanggeumchal’. Culm length and width are about 142 cm and 20.2 cm, respectively. It could be reduce the lodging problem by thicker stems and also adapted to mechanized cultivation. ‘Nampungchal’ does produce high quantities of polyphenol and tannin contents with DPPH radical scavenging activity in pigmented testa. The object of this breeding program is improvement for mechanized production with high yield potential, lodging resistant, and responsive to favorable environmental conditions.