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엄미정 ( Mi-jeong Uhm ),정현수 ( Hyun-soo Jung ),고도영 ( Do-young Ko ),안병구 ( Byeong-gu An ) 한국환경농학회 2021 한국환경농학회 학술대회집 Vol.2021 No.-
Livestock manure can be used as substitute resources of fertilizer if treated properly, because they contain the essential nutrients of crops. For this reason, needs for utilization of livestock manure compost (LMC) is increasing, and it is necessary to develop its crop application technology for reduction of chemical fertilizer (CF). The purpose of this study was to examine the usability of LMC as basic fertilizer for CF replacement, and to compare the effects on the nutrient uptake, yield and storage property of southern-type garlic (Allium sativum L.), ‘Daesae’, by the different application level of LMC. The nutrient uptake per unit area and fertilization efficiency at harvest period were higher in the order of CF plot, LMC P 1.5 (1.5 times amount of P<sub>2</sub>O<sub>5</sub> as a basal fertilizer) plot, and LMC P 1.0 (standard amount of P<sub>2</sub>O<sub>5</sub> as a basal fertilizer) plot. The content of available P<sub>2</sub>O<sub>5</sub> and exchangeable K in the soil after experiment in LMC P 1.5 plot slightly increased than before experiment, but tended to be similar to those of CF plot. The yield of garlic bulb in LMC P 1.5 plot was no significant difference from that of CF plot, and was the lowest in NF (non fertilization) plot. The weight loss rate and decay rate of bulb in three LMC plots after 120 days of storage were 26.8~27.6%, 13.8~16.2%, respectively, which was less than those of CF plot, which was judged to be the effect that the ratio of bulbs of large size was relatively small. Further tests on long-term soil environment changes and cultivation effects according to annual application of livestock compost will be needed.
엄미정(Mi Jeong Uhm),김치선(Chi Seon Kim),김은지(Eun Ji Kim),정현수(Hyun Soo Jung),김정만(Jeong Man Kim) (사)한국생물환경조절학회 2018 생물환경조절학회지 Vol.27 No.3
얌빈(Pachyrhizus erosus, Yam bean)은 멕시코 원산의 아열대성 콩과 식물로서 아삭하고 즙이 많아 생으로 먹거나 다양한 요리재료로 사용되는 구근채소이다. 본 시험은 국내에서 얌빈 재배시 적정 파종시기를 찾고자 수행되었으며, 이를 위해 국내에서 주로 재배되는 2종을 대상으로 하여 온도에 따른 발아특성과 파종시기에 따른 적산온도 및 생산성을 비교하였다. 발아율은 18℃이상에서 86.0~94.0%를 보였으며, 발아 소요일수는 낮은 온도에서 길게 나타났다. 천군만마 품종이 태국 재래종에 비해 개화기나 구근 형성시기가 더 늦었고, 개화와 구근형성 및 비대에 필요한 적산온도도 각각 293℃, 280℃, 108℃가 더 소요되었으며, 지상부나 구근의 건물량은 더욱 많았다. 또한, 4월 25일 파종은 다른 시기에 비해 구근형성기까지 일수가 더 소요되었고, 구근형성과 비대시기의 지연으로 수확지수가 낮았으며, 6월 9일 이후 파종시는 영양생장이 충분하지 않은 상태에서 10월 하순 이후 저온 및 서리로 인해 생육이 정지되어 구근의 충분한 비대가 어려웠다. 한편, 5월 10일과 25일에 파종한 경우에는 일장, 온도 등의 변화가 영양생장과 구근형성에 유리하게 작용하여 얌빈 두 종 모두 구근 건물량과 수확지수가 높고 수량이 많아 파종시기로 적합하였다. Yam bean (Pachyrhizus erosus) is a subtropical plant belonging to the Fabaceae family, and is a tuberous vegetable used as various food material with a crisp and juicy taste. This study was conducted to seek optimum sowing time of yam bean in Korea. For this, we surveyed germination properties by the different temperatures and compared the accumulation temperature (AT) and dry matter production (DMP) on growth stages of yam bean by the different sowing times. Two types of varieties cultivated mainly in Korea, Thailand local variety (TLV) and Cheongunmanma cultivar (CGMM), was used. The germination rate of yam bean was 86.0~94.0% at above 18℃, and germination days was longer at lower temperature. The times for flowering and tuber formation of CGMM were later than those of TLV, and the AT required for flowering, tuber formation and hypertrophy of CGMM were higher than those of TLV by 293℃, 280℃ and 108℃, respectively. Also, DMP of shoot and tuber in CGMM were greater than those in TLV. In sowing at April 25, tuber formation was slower than sowing after that time, and harvest index (HI) was relatively low due to delayed formation and hypertrophy of tuber. In sowing after June 9, DMP of shoot was relatively greater in early growth, but tuber was not sufficient to enlarge due to lack of growth days by cold and frost in late October. In sowing May 10 and 25, DMP of tuber and HI were the highest, because the change of day length and temperature gave an advantage to vegetable growth and tuber development. All above suggest that it was suitable to sow seeds on May for increment of tuber productivity in Korea.