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논문 기본 정보

자료유형
학술저널
저자정보
이충근 (National Institute of Agricultural Engineering RDA) 성제훈 (National Institute of Agricultural Engineering RDA) 정인규 (National Institute of Agricultural Engineering RDA) 김상철 (National Institute of Agricultural Engineering RDA) 박우풍 (National Institute of Agricultural Engineering RDA) 이용범 (National Institute of Agricultural Engineering RDA) 박원규 (Kyungpook National University)
저널정보
한국농업기계학회 바이오시스템공학(구 한국농업기계학회지) 바이오시스템공학 제29권 제2호
발행연도
2004.1
수록면
109 - 120 (12page)

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To obtain basic information for precision agriculture, spatial variability of rice growth condition was evaluated in 100m ${\times}$100m paddy field. The rice growth condition of four hundred locations in the field were investigated to analyze the spatial variability of their properties ; SPAD, plant length and tiller number. Geostatistical analysis was carried out to examine within-field spatial variability using semivariograms and kriged maps as well as descriptive statistics. Descriptive statistics showed that the coefficient of variation for SPAD, plant length, and tiller number exceeded 5.70 %, suggesting a relatively high variability. Geostatistical analysis indicated a high spatial dependence for all the properties except for the second tiller number. The range of spatial dependence was about 20 m for SPAD, plant length, and tiller number. Based on the results of spatial dependence, kriged maps were prepared for the properties to analyse their spatial distribution in the field. The results reflected the history of field management. In conclusion, the need for site-specific field management and possibility of precision agriculture were demonstrated even in an almost flat paddy field.

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