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홍현창,윤미경 慶熙大學校 大學院 院友會 2000 高凰論集 Vol.26 No.-
양지식물과 음지식물의 기공밀도, 엽록소 함량과 비엽중량의 상관관계에 대해 알아보기 위하여, 다년생 초본식물 중 양지식물인 꿀풀(Pranella vnlgaris), 음지식물인 톱바위취(Saxifraga punctata), 선택적 음지식물인 단풍마(Dioscorea quinqueloba), 단풍취(Ainsliacea acerifolia)를 이용하여 실험하였다. 각 식물 종의 엽록소 함량과 비엽중량을 각각 비교하고 이들의 상관관계를 살펴보았으며, 또한 기공밀도와 기공길이를 측정하여 종간 및 종내 변이를 분석하였다. 그 결과는 다음과 같다. 1. 엽록소 함량과 비엽중량은 모두 양지식물이 음지식물보다 더 높게 나타났다. 양지식물인 꿀풀과 음지식물인 톱바위취의 결과에서 엽록소 함량과 비엽중량은 모두 양의 상관관계를 보였으며, 선택적인 음지식물 중 단풍마는 양지보다 음지에서 유의성이 더 높게 나타났고, 단풍취의 경우 양지는 유의성이 매우 높았지만 음지는 유의한 차이가 없었다. 2. 엽록소 함량과 엽면적은 양지식물인 꿀풀, 양지에서의 단풍마와 단풍취에서는 유의한 상관관계를 보이지 않았으며, 단풍취 음지를 제외한 음지식물 즉 톱바위취, 음지에서의 단풍마에서는 유의한 상관관계를 보였다. 3. 기공밀도는 양지식물인 꿀풀, 양지의 단풍마와 단풍취가 각각 155.00±21.07, 364.38±21.42, 79.33±4.46, 음지식물인 톱바위취, 음지의 단풍마와 단풍취가 각각 41.00±4.86, 202.29±18.31, 50.57±5.29로 양지식물이 음지식물보다 더 높은 값을 나타냈다. 상대적으로 기공길이는 양지식물인 꿀풀, 양지의단풍마와 단풍취가 각각 2.13±0.19, 1.46±0.28, 2.16±0.30, 음지식물인 톱바위취, 음지의 단풍마와 단풍취가 각각 3.07±0.44, 1.62±0.23, 2.28±0.31로 양지보다 음지에서 더 큰 값을 보였다. 또한 전체적으로 기공밀도와 기공길이는 고도로 유의한 음의 상관관계가 나타났다. Pranella vulgaris(a sun perennial), Saxifraga punctata(a shade perennial), Dioscorea quinqueloba(a shade tolerant perennial) and Ainsliacea acerifolia(a shade tolerant perennial) were selected as materials for the studies on the relationships among stomatal density, chlorophyll content and specific leaf weight of sun and shade perennial herbs. We analyzed the relationships between chlorophyll content and specific leaf weight on each perennial herb. We also analyzed variations in and among perennials by observing stomatal density and length. The results were as follows: 1. Both of chlorophyll content and specific leaf weight were higher in sun plants than in shade plants. Chlorophyll content and specific leaf weight have a significant positive correlation in pranella vnlgaris of a sun perennial, and Saxifraga punctata of a shade perennial. There was more significant positive correlation in shade plants than in sun plants of Dioscorea quinqueloba, a shade tolerant perennial. However, there was no significant correlation in a shade tolerant perennial herb of Ainsliacea acerifolia, although there was highly significant correlation in sun plants. 2. There was no significant correlation between the chlorophyll content and leaf area in sun plants of Pranella vulgaris, Dioscorea quinqueloba and Ainsliacea acerifolia. However, There were significant correlations in shade plants of Saxifraga punctata and Dioscorea quinqueloba, excepting shade plants of Ainsliacea acerifolia. 3, The stomatal density were higher in sun plants than in shade plants. The stomatal densities were 155.00±21.07, 364.38±21.42 and 79.33±4.46(numbers·mm^-2 leaf area) in sun plants of pranella vulgaris, Dioscorea quinqueloba and Ainsliacea acerifolia, respectively. And stomatal densities were 41.00±4.86, 202.29±18.31 and 50.57±5.29 in shade plants of Saxifraga punctata, Dioscorea quinqueloba and Ainsliacea acerifolia, respectively. However, stomatal lengths were longer in shade plants than in sun plants. The stomatal length were 2.13±0.19, 1.46±0.28 and 2.16±0.30(㎛) in sun plants of Pranella vulgaris, Dioscorea quinqueloba and Ainsliacea acerifolia, respectively. But the stomatal length of shade plants of Saxifraga punctata, Dioscorea quinqueloba and Ainsliacea acerifolia were 3.07±0.44, 1.62±0.23 and 2.28±0.31(㎛), respectively. And there was highly significant negative correlation between stomatal density and length.
한국산 참나무류의 생리적 특성인 광합성과 호흡율에 따른 생장해석에 관한 연구
최현섭,권성진,홍현창,문성경 慶熙大學校 1992 論文集 Vol.21 No.-
The seasonal changes of the chlorophyl 1 contents, photosynthetic and respiratory rates(at 25℃, 300 ppm) were measured in four species of Quercus variabilis, Q. serrata, Q. aliena, and Q. mongolica. The estimated results were as follows;
양돈 급여에 적합한 원형베일 사일리지 해체·세절·연화 일관시스템 연구 (I)
홍종태,김혁주,유병기,현창식,김성기,유지수,홍영신,서형덕,Hong, Jong-Tae,Kim, Hyuck-Joo,Yu, Byeong-Kee,Hyun, Chang-Sig,Kim, Sung-Kee,Yoo, Ji-Soo,Hong, Young-Sin,Seo, Hung-Dug 한국축산환경학회 2013 한국축산시설환경학회지 Vol.19 No.1
Currently, there was no producing system of TMR for pig feeding in Korea. In this study, we examined unrolling, cutting, and softening for the round bale silage. We designed and developed the prototype system of round bale silage for pig feeding. Unroll method were lower chain conveying and upper belt conveying which includes an hydraulic vertical fodder knife. Gathering and cutting method were rotating auger and flywheel which have 10 cutters, input roller of 280 rpm, and cutter rotating speed of 1,750 rpm. Softening device was rotating hammer in inclined cylinder adjustable to $25^{\circ}C$ and rotating speed up to 1,300 rpm. The prototype system was integrated working for unrolling, cutting, and softening. We found that when the round bale silage in unrolling apparatus cut length of 20 cm to input cutting apparatus, the cutting performance was well in continuous working up to input rate of 1,000 kg/h, the softening apparatus was working well.