등숙시기를 달리한 경우 Japonica 품종과 Indica × Japonica 품종의 광합성능력과 등숙과의 관계 - 실험 II. 등숙기간중 온도가 광합성능력과 등숙에 미치는 영향

권용웅,이석영 한국작물학회 1986 한국작물학회 학술발표대회 논문집 Vol.1986 No.-

作付體系를 달리해 온 隣接耕地들의 雜草種子 埋立狀態 및 雜草發生潛在力

鄭奉眞,權容雄 서울大學校 農科大學 1980 서울대농학연구지 Vol.5 No.1

Weed seeds buried in the soil at depths down to 16cm and their germinability were investigated for neighouring fields of 9 cropping systems: paddy rice monoculture, paddy rice and rye, soybean and barley, soybean and rye, wheat-fallow-sesame-fallow, sweet potato-fallow-corn-fallow, peanut-fallow-sesame-fallow, strawberry or chinese chive culture. The number of weed seeds buried in the soil of 2cm depth unit per ㎡ area was on average about 30,000 to 40,000 in the paddy field and about 60,000 to 100,000 in the upland field. Weed seeds in the soil were distributed rather evenly down to 8cm depth, but the number decreased as the depth increased in the soil layer deeper than 8cm. Geminability of buried weed seeds increased about twice after reburial of the seeds 30cm deep in the 1:1 mixture of soil and sand for 2 months. Approximately 25% of the paddy weed seeds and 6% of the upland weed seeds were able to germinate after reburial. Number and distribution of buried seeds in the soil were apparantly affected by cropping system as practiced over 10 years in this investigation. However, the extent of the differences exerted by cropping system seems not so important as compared to the enormous numbers of buried seeds in all of the fields.

韓國의 水稻作에 있어서 旱害 實能

權純國,權容雄 서울大學校 農科大學 1987 서울대농학연구지 Vol.12 No.1

carried out to review and to take countermeasures against droughts in Korean ch have been occurred most frequently among various agricultural disaters. The uded as follows; return period of droughts for Korean paddy rice is amounted approximately to sed on historical data as well as the data of recent 20 years. Therefore, drpou be considered as the most important agricultural disaster and appropriate counter- uld be taken for the stable rice production. igated area which can resist against the drought with 3 years return period is a n 50% of the total paddy area in view of the drought-resistance capability of eserviors, the continuous development of agricultural water resources is urgently countermeasure against periodical droughts. th further development of water resources, the efficient management of water isting reservoirs, rational distribution of irrigation water and emergency measures ghts are needed. Also, the above mentioned measures should be based on the 1ts and the data accumulated from the field study. o the meterorological factors, the relative storage ratio of reservoirs defined in this idered a good index which indicates the degree of droughts for paddy rice. Because droughts is almost concentrated to before and after transplanting, cultivation and s countermeasures against droughts are also very important in addition to new of water resources and the rational distribution of irrigation water. Research these areas should not be neglected.

Paclobutrazol 처리에 의한 수도초장 및 간장의 품종간 반응

권용웅,나애실,소창호 한국작물학회 1987 한국작물학회 학술발표대회 논문집 Vol.1987 No.-

무효분얼기 냉수처리가 수도의 냉해경감에 미치는 영향

권용웅,소창호,임규옥 한국작물학회 1987 한국작물학회 학술발표대회 논문집 Vol.1987 No.-

水稻 遠緣品種들의 登熟期間中 葉身老化, 米粒發達및 그 品種間 差異

金柱憲,權容雄 서울大學校 農科大學 1977 서울대농학연구지 Vol.2 No.2

To elucidate the characteristics of leaf senescence in relation to the development of rice grain, course of change in the content of chlorophylls, soluble protein, and total phenolics, course of increase in dry weight of rice caryopsis, and their interrelationships were studied, using Jinheung, a typical Japonica variety, T(N)-1, an Indica, IR 1317-266-34 and Suwon No. 256, Indica×Japonica progenies. The results obtained are summarized as follows: 1. The variety T(N)-1 and IR 1317-266-34 showed a sigmoidal time course of the rice caryopsis development in dry weight in contrast to the continuous increase in the dry weight of rice caryopsis to 40 days after heading in the variety Jinheung and Suwon No. 256. 2. The chlorophyll content of leaf blades decreased during the course of grain development; the degree of decrease in the chlorophyll content being the highest in the IR 1317-266-34 and being the lowest in the Suwon No. 256. 3. Total pheonolics content of the leaf blades increased during the course of grain development, showing varietal difference in the accumulation pattern: major accumulation occurred during 30 to 35 days after heading in the Jinheung and IR 1317-266-34 in contrast to a rather linear increase after heading in the Suwon No. 256 and T(N)-1. 4. The content of soluble protein of the leaf blades decreased during the course of grain development in all varieties tested except for the Suwon No. 256, which showed some increase in the flag leaf during the first 15 days after heading and little decrease in other leaves during the later period. 5. Significant positive correlationship existed between the chlorophyll content and the soluble protein content of leaf blades during their senescence, r value being ??, ??, ??, ??, respectively for the Jinheuing, T(N)-1, Suwon No. 256, and IR 1317-266-34.

종단자료를 활용한 사교육 연구의 동향

권용웅 한국교육학회 2014 한국교육학회 학술대회 Vol.2014 No.-

벼 뿌리의 호흡, α-Naphthylamine, 산화력, TTC 환원력, 양수분 흡수 및 일필에 대한 질소 및 인산시용량, 차광, 수분 Potential 및 온도처리의 영향

권용웅,나애실,이민규 한국작물학회 1988 한국작물학회 학술발표대회 논문집 Vol.1988 No.-

多年間 施肥條件을 달리 해온 논의 土性變化와 그가 水稻의 實用形質에 미치는 影響 및 品種間 差異

權容雄,李殷雄 서울대학교 1968 서울대학교 論文集 Vol.19 No.-

The effect of long-term different fertilization on the properties of paddy soil, and the responses of the rice plant to such fertilities were studied with six rice varieties using the plots fertilized differently over 40 years. Different fertilization mainly resulted in the differences of chemical porperties such as pH, content of organic matter and nitrogen, cation exchangeable capacity and productivity of paddy soil. Responses of the rice plant to such different soil fertilities and fertilization were varied from variety to variety, showing the differences in growth pattern, nitrogen and carbohydrate content, resistance to lodging, and the changes in some morphological characteristics closely associated with yielding ability.

土攘 및 植物의 水分포텐셜과 HR-33T 露點式 微電壓計에 의한 그의 測定

權容雄 서울大學校 農科大學 1979 서울대농학연구지 Vol.4 No.2

Development of water potential concept is reviewed firstly for the Korean scientists, and implications of water potential measurement in irrigated crop culture are discussed. Development and theoritical aspects of psychrometric methods of water potential measurement are outlined. Also, the HR-33T Dew Point Microvoltmeter and sensors, C-52 sample chamber, L-51 leaf thermocouple and Pt-51 soil thermocouple, makes of the Wescor Inc, Logan, Utah, U.S.A and donations by Grant 69 of the International Foundation For Science, Stockholm, Sweden, were characterized ofr practical application in nutrio-irrigation culture of crops: Cooling time requirement, moisture equilibrium time requirement, and linearity of μV output of the equipment over the range of water potential from -5 bars to -70 bars were as follows: cooling time was sufficient with 10 seconds for C-52, and L-51, and 15 seconds for Pt-51; moisture equilibrium time required was 5 minutes for C-52 and L-51, and about 1 to 2 hours for Pt-51 at the water potential of about -5 bars; shorter time was requried as the water potential of the sample decreases; linearity was Y(μV)=-0.617+0.597X (-bars) for C-52, Y=1.678+0.627X for L-51, and Y=1.378+0.624X for Pt-51; linearity was good enough and sensitivity of the thermocouples was much improved in the dew point method than the sensitivity of 0.47μV/bar in the psychrometric method, but it was still practically difficult to measure correctly the water potential higher than -0.5 bars.