한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)

  • 제41권3호
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  • Pages.158-163
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  • 2008
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  • 0367-6315(pISSN)
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  • 2288-2162(eISSN)
한국토양비료학회 (Korean Society of Soil Science and Fertilizer)
권호 표지

시설재배 수박 엽 적정양분함량 설정

Establishment of Critical Ranges of Inorganic Nutrition Contents in Leaves of Watermelon(Cucurbita citrullus L.) in Protected Cultivation

  • 투고 : 2008.04.22
  • 심사 : 2008.06.18
  • 발행 : 2008.06.30
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초록

시설재배 수박에 대한 적정 양분함량 기준을 설정하기 위하여 2004년부터 2006년까지 고창에서 시설수박의 엽 중 무기양분함량과 수량을 조사하였다. 그 결과 3년간 조사한 수박 재배 농가 포장을 대상으로 생육단계별 적정 양분함량 범위를 설정하였다. 수박 수량과 생육단계별 엽 중 무기양분함량은 정식후 20일이 가장 유의성 있는 상관을 보였으며 이 때 엽 중 다량원소 적정 함량 범위는 N 5.0~6.3%, P 0.30~0.57%, K 3.5~4.2%, Ca 1.7~3.8%, Mg 0.20~0.42% 이었다. Fe, Mn, Zn, Cu 및 B 등의 미량원소 적정함량 범위는 Fe $96\sim128mg\;kg^{-1}$, Mn $67\sim201mg\;kg^{-1}$, Zn $40\sim60mg\;kg^{-1}$, Cu $6\sim9mg\;kg^{-1}$ 및 B $41{\sim}82mg\;kg^{-1}$ 이었고, 적정 양분함량 범위로 설정한 값의 하한치를 양분 결핍, 상한치를 양분 과잉으로 판단했다. 본 시험연구결과 제시한 수박의 생육단계별 적정 양분함량 범위 기준은 농업현장에서 빈번히 발생하는 수박의 영양장애를 해결하기 위한 양분지표로 사용할 수 있을 것이라 생각된다.

This study was carried out to elucidate the relationship between yields and inorganic nutrient contents, and then establish of critical range of inorganic nutrient contents in leaves of watermelon in protected cultivation in Gochang from 2004 to 2006. In considering the yields and nutrient contents of watermelon, the critical ranges of macro-nutrient contents in leaves of watermelon at 20 days after transplanting were in N 5.0~6.6%, P 0.30~0.57%, K 3.5~4.2%, Ca 1.7~3.8% and Mg 0.20~0.42%, respectively. The critical ranges of micronutrient content, such as Fe, Mn, Zn, Cu and B, were not found the regular trend with different growth stages. However, the critical range of micronutrient contents in leaves of watermelon at 20 day after transplanting were in Fe 96~128, Mn 67~201, Zn 40~60, Cu 6~9 및 B $41{\sim}82mg\;kg^{-1}$, respectively. Finally, these results might be used at the indicator for critical nutrient contents for diagnosis of nutritional disorder in watermelon in protected cultivation.

키워드

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