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벼 재배 포장 생육변이의 공간통계학적 해석
Geo-statistical Analysis of Growth Variability in Rice Paddy Field

이충근  성제훈  정인규  김상철  박우풍  이용범  박원규 
  • 초록

    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.


  • 주제어

    Spatial variability .   Growth map .   Geo-statistics .   Precision agriculture.  

  • 참고문헌 (15)

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