한국농림기상학회지, 제 19권 제1호(2017) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 19, No. 1, (2017), pp. 1~9
DOI: 10.5532/KJAFM.2017.19.1.001
ⓒ Author(s) 2014. CC Attribution 3.0 License.


장마기 집중호우와 배수방법이 토양수분 및 포도 ‘진옥’과 ‘캠벨얼리’의 광합성 특성과 생육에 미치는 영향

최영민(1), 정성민(2), 최동근(1)
(1)전북대학교 원예학과
(2)국립원예특작과학원 과수과

(2016년 11월 03일 접수; 2017년 02월 14일 수락)

Effects of Heavy Rain during Rainy Season and Drainage Methods on Soil Water Content, Photosynthesis Characteristics, and Growth in ‘Jinok’ and ‘Campbell Early’ Grapes

Young Min Choi(1), Sung Min Jung(2), Dong Geun Choi(1)
(1)Department of Horticulture, Chonbuk National University, Jeonju 54896, Korea
(2)Fruit Research Division, Institute of Horticultural & Herbal Science, Rural Development Administration, Wanju 55365, Korea

(Received November 03, 2016; Accepted February 14, 2017)

ABSTRACT
Recently, it is increasing the grape farm which is converted from paddy field to orchard. These soil which are poor drainage extremely also can be damaged a lot by excessive water or flooding during heavy rain season on summer. Therefore the aim of this study was carried out to measure the changes of soil water potential and to compare the growth responses of ‘Jinok’ (Vitis spp.) and ‘Campbell Early’ (V. labruscana) grapes under three drainage systems (control, conventional drainage, and under drainage). After heavy rain, soil water potential holding times above -15 kpa applied water excessive were 352, 348 and 180 hours in control, conventional, and under drainage systems, respectively. The clay content of the under drainage system was lower than the other systems about 8-12%. The crop water stress index was lowest in the under drainage and highest in the control. Also, photosynthetic rate has showed the opposite result with crop water stress index. It was significant differences between the treatments but, the value has not shown significantly different between the varieties. In addition, leaf area and the trunk growth rate was more effective in under drainage than in the control and conventional drainage.

Keyword: Crop water stress index (CWSI), Severe rain storm, Trunk growth, Photosynthetic rate, Under drainage

MAIN

적요

최근 논에서 밭으로 개원하는 포도농가가 증가하고 있으며, 토양 배수성이 극히 불량한 이러한 토양은 여름철의 집중호우기(장마기)때 과습 또는 침수해를 받을 우려가 매우 높다. 따라서 본 연구는 배수방법(무처리, 명거배수, 암거배수)을 달리하여 토양의 수분변화를 측정하고, 이에 따른 포도 ‘진옥’(Vitis spp.)과 ‘캠벨얼리’(V. labruscana)의 생육반응을 비교하고자 수행하였다. 집중 호우 이후 토양과습에 해당하는 –15kpa 이상의 토양수분포텐셜 유지시간은 무처리, 명거배수구, 암거배수구에서 각각 352, 348, 180시간으로 조사되었으며, 상대적으로 암거배수의 점토함량은 다른 배수처리구보다 약 8∼12% 낮았다. 집중 호우 이후 작물수분스트레스지수는 암거배수가 가장 낮고 무처리가 가장 높았으며, 광합성속도는 반대의 결과를 보여 처리간 차이는 유의하였으나 품종간에는 큰 차이를 보이지 않았다. 또한 엽면적과 주간부단면적의 생장량 역시 암거배수가 무처리와 명거배수보다 효과적이었다.

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