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Mi Geon Cheon,Seo Hyoun Lee,Kyung Mi Park,Seong-Tae Choi,Yeon Hyeon Hwang,Young Ho Chang 한국토양비료학회 2021 한국토양비료학회지 Vol.54 No.3
This experiment was conducted to understand nutrient uptake of container-grown highbush blueberries in plastic film house. In March 2013, one-year-old ‘Duke’ was planted in a 180-L container mixed with peatmoss (130 L) and perlite (40 L), and hydroponic solution was supplied (fertilization) or not (non-fertilization) until October 2020. Hydroponic solution consisted of NO₃-N 4.6, NH₄-N 3.4, PO₄-P 3.3, K 3, Ca 4.6, and Mg 2.2 mmol L<SUP>-1</SUP> and the non-fertilization was supplied with only underground water. In October 2020, total dry weight of a blueberry increased 1.5-fold more in the fertilization than in the non-fertilization. Dry weight and inorganic nutrient content were the greatest in root than in leaf, shoot, old branch, and cane, indicating importance of root as a reserve storage organ. Fertilization increased dry weight by 2-fold and inorganic nutrient contents of root by 2.2 - 2.6-fold. Total content of each nutrient in a bush increased 1.8 - 2.2-fold more by the fertilization. In non-fertilized treatment, maintaining dry weight and nutrient contents for 8 years indicated that plants absorbed the nutrients to some extent through mineralization of peatmoss medium and underground water.
Mi Geon Cheon,Seo Hyoun Lee,Kyung Mi Park,Seong-Tae Choi,Yeon Hyeon Hwang,Young Ho Chang 한국토양비료학회 2021 한국토양비료학회지 Vol.54 No.3
This experiment was conducted to evaluate the usefullness of cocopeat as a soil medium in blueberry cultivation. Two-year-old northern highbush blueberry ‘Duke’ and southern highbush blueberry ‘Spring High’ were planted in soil medium mixed with peatmoss (soil:peatmoss (v/v), 1:1) or cocopeat (soil:cocopeat (v/v), 1:1) in open fields in 2019. Soil pH measured in 2020 and 2021 ranged from 4.2 to 5.0 in peatmoss and 5.2 to 5.8 in cocopeat medium, indicating peatmoss has more suitable pH for blueberry growth. Two years soil analyses indicated that peatmoss medium tended to contain a higher available P2O5 content and lower exchangeable cations compared with those of cocopeat. In 2021, peatmoss medium significantly increased the number of shoots per bush, by 16% for ‘Duke’ and 92% for ‘Spring High’ compared with the cocopeat. Bushes from peatmoss medium produced yield 1.9- to 2.7-fold higher for two years in ‘Duke’ and 1.4- to 1.8-fold higher in ‘Spring High’ compared with respective yields from cocopeat. Fruit characteristics for two years were not consistently affected by different soil media, except that the acidity was slightly higher in peatmoss. The results suggested that since the better bush growth from peatmoss medium resulted mainly from lower soil pH, the use of cocopeat as a soil medium should be followed by pH adjustment.
Mi Geon Cheon,Seo Hyun Lee,Kyoung Mi Park,Seong Tae Choi,Yeon Hyeon Hwang,Young Ho Chang 한국원예학회 2021 한국원예학회 학술발표요지 Vol.2021 No.10
This experiment was conducted to evaluate the usefullness of cocopeat as a soil medium in blueberry cultivation. Two-year-old northern highbush blueberry ‘Duke’ and southern highbush blueberry ‘Spring High’ were planted in soil medium mixed with peatmoss (soil:peatmoss (v/v), 1:1) or cocopeat (soil:cocopeat (v/v), 1:1) in open fields in 2019. Soil pH measured in 2020 and 2021 ranged from 4.2 to 5.0 in peatmoss and 5.2 to 5.8 in cocopeat medium, indicating peatmoss has more suitable pH for blueberry growth. Two years soil analyses indicated that peatmoss medium tended to contain a higher available P2O5 content and lower exchangeable cations compared with those of cocopeat. In 2021, peatmoss medium significantly increased the number of shoots per bush, by 16% for ‘Duke’ and 92% for ‘Spring High’ compared with the cocopeat. Bushes from peatmoss medium produced yield 1.9- to 2.7-fold higher for two years in ‘Duke’ and 1.4- to 1.8-fold higher in ‘Spring High’ compared with respective yields from cocopeat. Fruit characteristics for two years were not consistently affected by different soil media, except that the acidity was slightly higher in peatmoss. The results s uggested that s ince t he b etter bush growth from p eatmoss medium resulted mainly from lower soil pH, the use of cocopeat as a soil medium should be followed by pH adjustment.
재배작형에 따른 포도 ‘진옥’과 ‘캠벨얼리’의 수체생육 및 과실 특성 분석
천미건(Mi Geon Cheon),김영봉(Yeong Bong Kim),이선영(Sun Yeong Lee),홍광표(Gwang Pyo Hong),정성민(Sung Min Jung),김진국(Jin Gook Kim) (사)한국생물환경조절학회 2017 시설원예‧식물공장 Vol.26 No.3
본 연구는 국내에서 육성된 신품종 ‘진옥’ 포도와 대조품종인 ‘캠벨얼리’를 대상으로 재배작형을 노지, 비가림, 무가온 하우스로 나누어 수체생육 및 과실품질을 조사하였다. 수체생육을 보면 ‘진옥’이 ‘캠벨얼리’ 보다 주요 생육기가 빠른 경향이었고, 수확기는 무가온 하우스 재배의 ‘진옥’ 품종이 8월 13일로 가장 빨랐으며, ‘캠벨얼리’ 품종은 8월 17일이었다. 노지 재배유형에서는 ‘진옥’ 품종이 8월 25일, ‘캠벨얼리’ 품종이 8월 29일로 가장 늦었다. 신초경, 신초장 등 신초생육은 처리간 비슷한 경향이었다. 과실특성을 조사한 결과, 가용성고형물 함량은 무가온 하우스 재배 시 ‘진옥’과 ‘캠벨얼리’ 품종에서 각각 15.4˚Brix, 15.9˚Brix로 비슷한 경향이었고, 노지 재배에서는 각각 15.9˚Brix, 15.8oBrix였으며, 과실의 산함량과 과피의 색도도 비슷한 경향이었다. 병해충 발생은 6월 중순부터 갈색무늬병이 발생하기 시작하였고, 생육후기인 8월 상순에 조사한 갈색무늬병 피해엽률은 무가온하우스 재배의 ‘진옥’ 품종이 14%로 가장 낮았으며, 노지재배의 경우 ‘진옥’ 품종이 46%, ‘캠벨얼리’ 품종이 49%로 노지재배 유형에서 갈색무늬병의 발생이 많아 생육후기 집중적인 방제가 필요한 것으로 판단되었다. This study was conducted for the domestic new cultivar to expand cultivation area and sustainable production. The new domestic cultivar, ‘Jinok’ and control cultivar, ‘Campbell Early’, had been investigated on vine growth and fruit quality by different cultivating conditions as open field, rain shelter and unheated plastic house. The growth period of ‘Jinok’ was faster than ‘Campbell Early’. The harvesting date of ‘Jinok’ was on 13th of Aug. faster than ‘Campbell Early’ which was on 17th of Aug., and it was on 25th and 29th of Aug. for ‘Jinok’ and ‘Campbell Early’ on field cultivation, respectively. The growing length and width of new shoots were similar among the cropping systems. In the result of fruit characteristic evaluation, the soluble solids content of the ‘Jinok’ and ‘Campbell Early’ cultivating on the unheated plastic house were 15.4°Brix and 15.9°Brix, respectively. In the open field condition, those were 15.9°Brix and 15.8°Brix, respectively. The titratable acidity and chromaticity were similar among the treatments. In the appearance of past and disease, Phomopsis blight was occurred on mid of June and in the end of cultivation period on about early Aug., the damage by Phomopsis blight was the lowest about 14% in the unheated plastic house cultivation on the ‘Jinok’ cultivar and it was 39% in the open field condition. However, in the open filed cultivation for ‘Campbell Early’, Phomopsis blight was highly occurred about 49%. During this period, or the end of cultivation, it is necessary for the intensive control.