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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.18, no.2, 2009³â, pp.112-118
¾ç¾×ÀÇ ¼øÈ¯ÁֱⰡ ´ã¾×¼ö°æ ¿±Ã¤·ùÀÇ ¿ëÁ¸»ê¼Ò ³óµµ, »ýÀ° ¹× ½Ä¹°¿µ¾ç¼ÒÀÇ ÇÔ·®¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effect of Circulation Cycle of Nutrient Solution on the Dissolved Oxygen Concentration, and the Growth and Phytonutrient Contents of Leafy Vegetables Grown in DFT Systems )
¼­ÅÂö;ÀÌÇÑö;³ë¹Ì¿µ;ÃÖ°æÀÌ;À±Çü±Ç;ÀüâÈÄ; ±¹¸³¿ø¿¹Æ¯ÀÛ°úÇпø ½Ã¼³¿ø¿¹½ÃÇèÀå;±¹¸³¿ø¿¹Æ¯ÀÛ°úÇпø ½Ã¼³¿ø¿¹½ÃÇèÀå;±¹¸³¿ø¿¹Æ¯ÀÛ°úÇпø ½Ã¼³¿ø¿¹½ÃÇèÀå;±¹¸³¿ø¿¹Æ¯ÀÛ°úÇпø ½Ã¼³¿ø¿¹½ÃÇèÀå;±¹¸³¿ø¿¹Æ¯ÀÛ°úÇпø ä¼Ò°ú;¼­¿ï´ëÇб³ ½Ä¹°»ý»ê°úÇкÎ;
 
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ÁÖ¿ä ¿±Ã¤·ù 7Á¾ÀÇ Áֳ⠾ÈÁ¤»ý»êÀ» À§ÇÑ ´ã¾×¼ö°æ Àç¹è ½Ã ¾ç¾×ÀÇ ¼øÈ¯ÁֱⰡ ¾ç¾×ÀÇ ¿ëÁ¸»ê¼Ò ³óµµ, ¿±Ã¤·ùÀÇ »ýÀ°, ±×¸®°í ½Ä¹°¿µ¾ç¼ÒÀÇ ÇÔ·®¿¡ ¹ÌÄ¡´Â È¿°ú¸¦ °ËÅäÇÑ °á°ú, ¾ç¾×À» 1ÀÏ 10ºÐ ¼øÈ¯ 󸮱¸´Â Á¤½Ä 13ÀÏ ÈÄ ¿ëÁ¸»ê¼Ò ³óµµ°¡ ±Þ°ÝÇÏ°Ô ¶³¾îÁö°í 17ÀÏ ÈÄ¿¡´Â 2.8mg $L^{-1}$, 20ÀÏ ÈÄ¿¡´Â ÃÖÀú 1.5mg $L^{-1}$±îÁö ³·¾ÆÁ³´Ù. ó¸® 20ÀÏ ÈÄ 7°¡Áö ¿±Ã¤·ùÀÇ »ýüÁßÀº 1ÀÏ 10ºÐ 󸮱¸¿¡¼­´Â ´ëÁ¶±¸ÀÎ 10ºÐ ¼øÈ¯/110ºÐ Á¤Áö 󸮱¸¿¡ ºñÇØ $0{sim}24%$ ¹üÀ§¿¡¼­ ³·¾ÆÁ³À¸¸ç, 10ºÐ ¼øÈ¯/10ºÐ Á¤Áö 󸮱¸¿¡¼­´Â $-2{sim}34%$ Áõ°¡ÇÏ¿´´Ù. ¾ç¾×ÀÇ ¼øÈ¯ÁֱⰡ ªÀ»¼ö·Ï ½Ä¹°Ã¼ ¿±³» PÀÇ ÇÔ·®ÀÌ Áõ°¡ÇÏ¿´À¸¸ç, ½Ä¹°Ã¼ÀÇ C/NÀ²°ú ºñŸ¹Î C ÇÔ·®Àº °¨¼ÒÇÏ¿´´Ù. ÀÌ»óÀÇ °á°ú, ´ã¾×¼ö°æ ¿±Ã¤·ùÀÇ ¾ÈÁ¤ÀûÀÎ »ýÀ°°ú ½Ä¹°¿µ¿µ¼ÒÀÇ Èí¼ö¸¦ À§Çؼ­ 2½Ã°£¿¡ 10ºÐ Á¤µµÀÇ ¾ç¾× ¼øÈ¯ 󸮰¡ È¿À²ÀûÀ̾ú´Ù.
To determine the effects of circulation frequency of nutrient solution, three frequencies of 10min. on/10min. off; 10min. on/110min. off; and 10min. on/1,430min. off. treatments were applied to leafy vegetable production using deep flow technique (DFT) systems and their growth and phytonutrient content were investigated. In the 10min. on/I,430min. off treatment, dissolved oxygen concentration (DOC) 17 days after treatment decreased to 2.8mg. $L^{-1}$, known to be a low DOC that causes hypoxia, and thereafter decreased to 1.5mg. $L^{-1}$ 20 days after treatment. Fresh weight of 7 leafy vegetables in the 10min. on/1,430min. off treatment was lower by 0${sim}$24% than those in the 10min. on/110min. off treatment, and those in the 10min. on/10min. off was higher by -2${sim}$34% than those in the 10min. on/110min. off treatment as control. As the more frequent circulation was applied, the higher phosphorous content and the lower carbon to nitrogen ratio (C/N ratio) and total ascorbic acid contents were resulted. Results indicate that the circulation frequency of 110min, on/110min. off could be recommended for the production of the tested leafy vegetables in DFT systems.
 
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¼øÈ¯ÁÖ±â;½Ä¹°¿µ¾ç¼Ò;¿±Ã¤·ù;¿ëÁ¸»ê¼Ò;circulation frequency;dissolved oxygen;leafy vegetables;phytonutrients;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.18, no.2, 2009³â, pp.112-118
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200926158876981)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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