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수수 · 수단그라스 사일리지 제조에 있어 BMR 품종과 파옥쇄 첨가 효과
권찬호,김은중,조상범,Kwon, Chan Ho,Kim, Eun Joong,Cho, Sangbuem 한국초지조사료학회 2014 한국초지조사료학회지 Vol.34 No.4
유기 축산을 위한 여름철 사료작물인 수수 수단그라스교잡종은 생산성이 높고, 잡초발생이 미미하며, 병충해에 의한 피해도 작아서 무농약 재배에 적합하다. 그러나 수수 수단그라스 교잡종은 당 함량이 부족하고, 수분 함량이 높아서 낙산발효로 인해 사일리지 품질에 문제가 있다. 최근 육성된 BMR (Brown Mid Rib) 품종은 줄기 내 당도가 높게 개발되었다. 따라서 본 시험은 기존의 수수 수단교잡종과 BMR 수수 수단교잡종을 재배하여 사일리지로 제조하고, 수분 조절 및 영양소 보충을 위해 파옥쇄를 첨가하여 사일리지의 품질변화를 관찰하였다. 수수 수단교잡종과 BMR 수수 수단교잡종 사이에 생육특성 및 생산성은 차이가 없었으나 줄기내 당 함량은 BMR 품종이 약 $2B^{\circ}$ 정도 높은 경향을 나타내었다(p<0.05). 유기산 중 lactic acid의 비율은 대조구(SX17품종)의 78.5%에 비해 BMR 품종은 82.8%로 유의적으로(p<0.05)에 높았고, butyric acid의 비율은 대조구(SX17품종)의 18.5%에 비해 BMR 품종은 9.8%로 유의적으로(p<0.05)에 낮아서 BMR 품종을 사용할 경우 품질이 크게 개선되었다. 파옥쇄 첨가시 첨가수준간에는 NDF 및 ADF 함량은 대조구(SX17) 품종과 BMR 품종(Diamond BMR) 모두 유의적으로 감소하였다(p<0.05). TDN 함량 역시 대조구(SX17) 품종의 56.2와 BMR 품종(Diamond BMR)의 57.1간에는 유의적 차이가 없었다. 그러나 파옥쇄 첨가시에는 대조구(SX17) 품종과 BMR 품종(Diamond BMR) 모두에서 파옥쇄의 첨가수준에 따라 TDN 함량이 유의적으로 증가하였다(p<0.05). The present study was conducted to evaluate the productivity of $Sorghum{\times}sudangrass$ (SX17) hybrid and BMR (brown mid rib) $Sorghum{\times}sudangrass$ hybrid and silage quality of these forages with corn grain supplementation. The effect of corn grain supplementation on the quality of silages was also investigated. No remarkable differences at growth characteristics and productivities in two hybrids were found. Sugar content, however, in stem of BMR hybrid showed significantly great (p<0.05) and the difference between two hybrids was about $2B^{\circ}$. Ratio of lactic acid in total organic acid in BMR hybrid (82.8%) was significantly greater than the control (SX17 hybrid) (78.5%) (p<0.05). Ratio of butyric acid in total organic acid in SX17 hybrid (18.5%) was significantly greater than BMR hybrid (9.8%) (p<0.05). According to the result of organic acid ratio, it could be assumed that the use of BMR hybrid can improve silage quality. NDF and ADF contents in both SX17 and BMR hybrids were significantly declined with increased corn grain supplementation (p<0.05). Different TDN values in SX17 (56.2) and BMR (57.1) hybrids were detected. However, TDN values of both SX17 and BMR hybrid silages were significantly elevated by increasing the proportion of ground corn (p<0.05).
종자 피복 재료 및 결착제가 겉뿌림 목초의 발아 및 초기생육에 미치는 영향
권찬호,김종관,김종덕,김동암,민두홍,한건준 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.2
An experiment was conducted to evaluate the effects of peat moss, adhesives, and various phosphorus materials as coating materials on the germination and early growth of tall fescue (Festuca arundinacea Schr.), orchardgrass (Dactylis glomerata L.), alfalfa (Medicago saliva L.), and birdsfoot trefoil (Lotus corniculatus L.) at the Experimental Livestock Farm, Yonam College of Agriculture in 1997. Germinating energy of tall fescue seed coated with 10% peat moss was the highest, but germination was improved when peat moss was below 20%. Establishment and early growth of tall fescue seed coated were improved as the level of peat moss increased (not significant at p $lt; 0.05). Among different adhesives, germination of tall fescue seed coated with 3% cetyl-methyl cellulose was significantly higher than other adhesives, but no significant difference was observed in tall fescue with the percentage of coating materials. Germinating energy and germination of orchardgrass seed coated with tri-calcium phosphate (TCP) and mono-calcium phosphate (MCP) were higher than other phosphates (p $lt; 0.05). Germinating energy of tall fescue seed coated with TCP was the highest, but germination was improved when seed was coated with MCP. Germinating energy and germination of alfalfa seed coated with TCP were the highest among all treatments. Germinating energy of birdsfoot trefoil seed coated with MCP was higher compared with other phosphates (p $lt; 0.05). However, germination of birdsfoot trefoil seed was not influenced by coating. Tall fescue seed coated with below 20% peat moss gave greater improvement in germinating energy and germination. TCP shown a positive effect on germination. Therefore, methyl cellulose could be recommended as the best adhesives and TCP may be recommendable as a phosphorus source for seed coating.
한국 당정협의 제도의 정치적 기능 연구: ‘거부권행사자 이론’에 의한 접근
권찬호 한국의회발전연구회 2010 의정연구 Vol.16 No.3
Although ‘the ruling party-government policy consultation system’ plays an important role in the public policy process, we can hardly find any research about political function of the system. In addition, there has been no attempt to apply a new theoretical model to it. This study is aimed to illustrate the system by utilizing ‘veto player theory’ of George Tsebelis. First of all, operational mechanism of the system was summarized. Secondly, basic concepts and theoretical structure of Tsebelis model was described. The main point of this study is to understand political implications of the model and apply its practical attributes. The result of this research shows that the essence of the system decreases stability of government policies and increases adaptability of new policies. A policy stability is a function of ‘winset’ defined as win-win combination of the political institutions. we can conclude that the system brings about political stability significantly. It also softens the possible conflicts between the executive and the legislative branch by expanding a winset scope. This is an important raison d’être of the system. 당정협의가 정부정책 산출과정에서 중요한 역할을 담당하고 있음에도 불구하고 그것의 이론적 근거, 정책적 효과, 정치적 기능 등에 대한 학문적 탐색은 그리 많지 않다. 더구나 새로운 이론모형을 적용시켜 보려는 시도는 아직 없었던 것 같다. 이 글은 당정협의 제도의 정치적 기능을 체벨리스(Tsebelis)의 거부권행사자(veto player) 개념들을 사용하여 설명해 보려는데 있다. 먼저 한국 당정협의 제도의 작동체계를 개괄한 후, 체벨리스 모형의 이론체계와 기본개념들을 제시했고, 이 개념들이 당정협의 제도의 정치적 함의를 해석하는데 어떻게 적용될 수 있는지를 살펴보았다. 연구결과 당정협의 제도의 본질은 정책안정성(policy stability)을 낮춤으로써 새로운 정책의 도입 가능성을 높이려는 데에 있음을 알 수 있었다. 이 과정은 승리집합(winset)의 확대를 통해 행정부와 입법부 간의 충돌 가능성 완화에 기여하기 때문에 당정협의 제도가 정치체계의 안정화라는 정치적 기능을 수행한다고 결론지을 수 있었다.