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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.19, no.4, 2010³â, pp.298-304
EC ±âÁØ ¼øÈ¯½Ä ÆÄÇÁ¸®Ä« ¼ö°æÀç¹è¿¡¼­ ½Ã°£ °æ°ú ¹× ¹è¾×À²¿¡ µû¸¥ ÀÌ¿Â³óµµ º¯È­ ºÐ¼®
( Analysis of Changes in Ion Concentration with Time and Drainage Ratio under EC-based Nutrient Control in Closed-loop Soilless Culture for Sweet Pepper Plants (Capsicum annum L. 'Boogie') )
¾ÈÅÂÀÎ;½ÅÁ¾È­;¼ÕÁ¤ÀÍ; ¼­¿ï´ëÇб³ ½Ä¹°»ý»ê°úÇкΠ¹× ³ó¾÷»ý¸í°úÇבּ¸¿ø;¼­¿ï´ëÇб³ ½Ä¹°»ý»ê°úÇкΠ¹× ³ó¾÷»ý¸í°úÇבּ¸¿ø;¼­¿ï´ëÇб³ ½Ä¹°»ý»ê°úÇкΠ¹× ³ó¾÷»ý¸í°úÇבּ¸¿ø;
 
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EC ±âÁØ ¼øÈ¯½Ä ¾ç¾×Àç¹è¿¡¼­ ½Ä¹°ÀÇ ¾çºÐ Èí¼ö¿Í ¹è¾×À²Àº Àç»ç¿ë ¾ç¾× ³»ÀÇ À̿ ºñÀ²°ú ³óµµ¿¡ ¿µÇâÀ» ¹ÌÄ£´Ù. º» ¿¬±¸´Â ÆÄÇÁ¸®Ä«(Capsicum annum L. 'Boogie')ÀÇ EC ±âÁØ ¼øÈ¯½Ä ¾ç¾×Àç¹è¿¡¼­ ½Ã°£°ú ¹è¾×À²¿¡ µû¸¥ À̿ ³óµµÀÇ º¯È­¸¦ ºÐ¼®Çϱâ À§ÇØ ¼öÇàÇÏ¿´´Ù. ù ¹øÂ° ½ÇÇè¿¡¼­ ¼öÁýµÈ ¹è¾×À» EC $2.2dS{cdot}m^{-1}$·Î Á¶Á¤ÇÏ°í »õ·Î Á¶¼ºÇÑ ¾ç¾×°ú È¥ÇÕÇÏ¿© Àç»ç¿ë Çϰí ÁÖ±âÀûÀ¸·Î »ùÇøµ ÇÏ¿© ÀÌ¿ÂÀÇ ³óµµ¸¦ ºÐ¼®ÇÏ¿´´Ù. µÎ¹øÂ° ½ÇÇèÀº 7%, 16%, 39%, 51%ÀÇ ¹è¾×À²À» Àû¿ëÇÏ°í ¹è¾×°ú ¹è¾×À» ¿ø¼ö·Î Èñ¼®ÇÏ°í »õ·Î Á¶¼ºÇÑ ¾ç¾×°ú È¥ÇÕÇÏ¿´À» ¶§ÀÇ EC º¯È­¿Í À̿ ³óµµ¸¦ ºÐ¼®ÇÏ°í ºñ±³ÇÏ¿´´Ù. Àç»ç¿ë ¾ç¾×¿¡¼­ÀÇ $K^+$ : $Ca^{2+}$¿Í $SO_4^{2-}$ : $NO_3^-$¿Í °°Àº À̿ °£ÀÇ ºñÀ² º¯È­¸¦ Á¶»çÇÏ¿´´Ù. ù¹øÂ° ½ÇÇè¿¡¼­ÀÇ À̿ ³óµµÀÇ º¯È­ ¹üÀ§´Â °¢°¢ $K^+$ 1.13, $Ca^{2+}$ 5.35, $Mg^{2+}$ 0.92, $NO_3^-$ 0.9 $SO_4^{2-}$ 1.10, $PO_4^{3-}$ $0.19meq{cdot}L^{-1}$À̾ú´Ù. À̿ °£ÀÇ ºñÀ² º¯È­´Â ¾çÀ̿¿¡¼­´Â ÁÖ·Î $K^+$ : $Ca^{2+}$À» Áß½ÉÀ¸·Î À½À̿¿¡¼­´Â $NO_3^-$ : $SO_4^{2-}$À» Áß½ÉÀ¸·Î ³ªÅ¸³µ´Ù. µÎ ¹øÂ° ½ÇÇè¿¡¼­ ¹è¾×À²¿¡ µû¸¥ ¹è¾×ÀÇ ¹è¾×À²ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó Á¡Â÷ °¨¼ÒÇÏ´Â °æÇâÀ» ³ªÅ¸³Â´Ù. ¹è¾× ³» °¢ ÀÌ¿ÂÀÇ ³óµµµµ ¹è¾×À²ÀÇ Áõ°¡¿¡ µû¸¥ °¨¼Ò °æÇâÀ» º¸¿´´Ù. ¹è¾×À²¿¡ µû¸¥ ¹è¾× ³» À̿ °£ÀÇ ºñÀ² º¯È­¿¡´Â Â÷À̰¡ ¾ø¾ú´Ù. ±×·¯³ª ¹è¾×À» Èñ¼®ÇÏ°í »õ·Î Á¶¼ºÇÑ ¾ç¾×°ú È¥ÇÕÇÔ¿¡ µû¶ó ±³Á¤ È¿°ú¿¡ Â÷À̰¡ ³ªÅ¸³µ´Ù. 7% ÀÇ ¹è¾×À²ÀÌ »õ ¾ç¾×ÀÇ À̿ ºñÀ²¿¡ °¡Àå ±ÙÁ¢ÇÏ¿´À¸¸ç, 16%, 51% 39% ¼øÀ¸·Î ±³Á¤µÇ¾ú´Ù. ±³Á¤¿¡ µû¸¥ À̿ ºñÀ² º¯È­´Â $K^+$ : $Ca^{2+}$¿Í $NO_3^-$¿Í $PO_4^{3-}$¸¦ Áß½ÉÀ¸·Î ³ªÅ¸³µ´Ù.
Nutrient uptake by plants and drainage ratio in culture beds can affect ion balance and concentrations of nutrient solutions in electrical conductivity (EC)-based closed-loop soilless culture. This study was conducted to analyze ion concentration changes with time and drainage ratio under EC-based nutrient control in closed-loop soilless culture for sweet pepper plants (Capsicum annum L. 'Boogie'). At first experiment, ion concentrations of the nutrient solution were periodically analysed while collected drainage was being reused by mixing with fresh nutrient solution at a dilution rate of EC $2.2;dSm^{-1}$. Changes in ion concentrations of $K^+$, $Ca^{2+}$, $Mg^{2+}$, $NO_3^-$, $SO_4^{2-}$, and $PO_4^{3-}$ were 1.13, 5.35, 0.92, 0.9, 1.10, $0.19;meq{cdot}L^{-1}$, respectively. Ion balance such as $K^+$ : $Ca^{2+}$ and $SO_4^{2-}$ : $NO_3^-$ were mainly affected during the recirculation of nutrient solution. At second experiment, ion concentrations and EC of drainage were compared before and after replenishment under different four drainage ratios of 7%, 16%, 39%, and 51%. Ion ratios of the recirculated nutrient solutions such as $K^+$ : $Ca^{2+}$ for cation and $SO_4^{2-}$ : $NO_3^-$ for anion were investigated. ECs of drainage decreased with increase of drainage ratio and each ion concentration showed the same trends as EC did. Ion balances in drainage with drainage ratio were a little different from each other, but each ratio could be corrected by replenishment process. The ion balance at 7% drainage ratio was closest to initial ratio and followed by 16%, 51%, and 39% in the order. Ion balance such as $K^+$ : $Ca^{2+}$ and $NO_3^-$ : $PO_4^{3-}$ were mainly affected the correction process.
 
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¼øÈ¯½Ä ¾ç¾×Àç¹è;¹è¾×À²;À̿ ºñÀ²;ÆÄÇÁ¸®Ä«;closed-loop soilless culture;drainage ratio;ion balance;sweet pepper;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.19, no.4, 2010³â, pp.298-304
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201015037859928)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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