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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.5, no.2, 1996³â, pp.120-130
NFTÀç¹è¿¡¼­ $ extrm{CO}_2$ ½Ã¿ë°ú ¹è¾ç¾×ÀÇ $ extrm{NO}_3$:$ extrm{NH}_4$ºñÀ²ÀÌ °á±¸»óÃßÀÇ »ýÀ° ¹× ǰÁú¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effects of $ extrm{NO}_3$-N:$ extrm{NH}_4$-N Ratio and Elevated $ extrm{CO}_2$ on Growth and Quality of Lactuca sativa L. in Nutrient Film Technique )
¿ø¼±ÀÌ;Á¶¿µ·Ä;ÀÌ¿ë¹ü; ¼­¿ï½Ã¸³´ëÇб³ ¹®¸®°ú´ëÇРȯ°æ¿ø¿¹Çаú;¼­¿ï½Ã¸³´ëÇб³ ¹®¸®°ú´ëÇРȯ°æ¿ø¿¹Çаú;¼­¿ï½Ã¸³´ëÇб³ ¹®¸®°ú´ëÇРȯ°æ¿ø¿¹Çаú;
 
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º» ½ÇÇèÀº NFTÀç¹è¿¡¼­ ¹è¾ç¾×³» NO$_3$-N°ú NH$_4$-NÀÇ ºñÀ²°ú $CO_2$ ½Ã¿ëÀÌ °á±¸»óÃßÀÇ »ýÀ°, ¼ö·® ¹× ǰÁú¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ±¸¸íÇϰíÀÚ ½Ç½ÃÇÏ¿´´Âµ¥, ±× °á°ú´Â ´ÙÀ½°ú °°´Ù. 1. ¹è¾ç¾×ÀÇ pH¿Í EC¸¦ º¸Á¤ÇÏÁö ¾Ê¾ÒÀ» °æ¿ì, NO$_3$-N:NH$_4$-NÀÌ 100:0ÀÎ ±¸¿¡¼­ÀÇ pH´Â Á¡Â÷ÀûÀ¸·Î Áõ°¡ÇÏ¿´°í, NH$_4$-NÀÇ ºñÀ²ÀÌ ³ôÀ»¼ö·Ï ±Þ°ÝÈ÷ ÀúÇÏÇÏ¿© pH4.0±îÁö ³·¾ÆÁ³´Ù. 2. ¹è¾ç¾×À» º¸Á¤ÇÏÁö ¾ÊÀº »óÅ¿¡¼­ NO$_3$-N ¹× NH$_4$-NÀÇ ÀÏ º¯È­¸¦ ÃøÁ¤ÇÏ¿© º» °á°ú, NO$_3$-NÀÇ Èí¼öÀ²Àº NO$_3$-N:NH$_4$-NÀÌ 75:25, 50:50 󸮱¸¿¡¼­ °¢°¢ 27.7%, 26.1% ¿´À¸³ª NH$_4$-NÀÇ Èí¼öÀ²Àº 87.9%, 71.2%·Î °á±¸»óÃß´Â NH$_4$-NÀ» ¿ì¼±ÀûÀ¸·Î Èí¼öÇÏ¿´´Ù. 3. ¿±³» ¹«±â¼ººÐ ÇÔ·®¿¡¼­ T-N´Â NO$_3$-N°ú NH$_4$-N ºñÀ²¿¡ µû¸¥ Å« Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÀ¸³ª, P$_2$O$_{5}$, $K_2$O, CaO, MgO´Â »ýÀ°ÀÌ °¡Àå ÁÁ¾Ò´ø $CO_2$ 1500ppm ½Ã¿ë°ú NO$_3$-N:NH$_4$-NÀÌ 100:0¿¡¼­ ³ô°Ô ³ªÅ¸³µ´Ù. 4. $CO_2$ ½Ã¿ë¿¡ ÀÇÇÑ °¢ 󸮺° $CO_2$ µ¿È­À²µµ ¼ö·®°ú °°Àº °æÇâÀ» ³ªÅ¸³»¾î $CO_2$ 1500ppm ½Ã¿ë°ú NO$_3$-N:NH$_4$-NÀÌ 100:0 󸮿¡¼­ °¡Àå ³ô¾Ò°í, ¹è¾ç¾×ÀÇ NH$_4$-NºñÀ²ÀÌ ³ô¾ÆÁú¼ö·Ï ÇöÀúÈ÷ ¶³¾îÁ³´Ù. 5. °á±¸»óÃßÀÇ »ýÀ°Àº $CO_2$ 1500ppm ½Ã¿ë°ú NO$_3$-N:NH$_4$-NÀÌ 100:0 󸮿¡¼­ °¡Àå ÁÁ¾Ò°í, $CO_2$ ¹«Ã³¸®±¸¿¡ ºñÇÏ¿© $CO_2$ 1500ppm 󸮱¸¿¡¼­ ´ëü·Î ¾çÈ£ÇÏ¿´À¸³ª, NO$_3$-N:NH$_4$-NÀÌ 75:25, 50:50ÀΠ󸮿¡¼­´Â $CO_2$ ½Ã¿ë¿¡ ÀÇÇÑ ¼ö·®ÀÇ Áõ°¡°¡ °æ¹ÌÇÏ¿© 󸮰£ Â÷À̰¡ ÀÎÁ¤µÇÁö ¾Ê¾Ò´Ù. 6. ¿±Áß nitrateÇÔ·®Àº ¹è¾ç¾×ÀÇ NO$_3$-NÇÔ·®°ú ºñ·ÊÇÏ¿© NO$_3$-N:NH$_4$-N ÀÌ 100:0¿¡¼­ °¡Àå ³ô¾Ò°í, vitamin C ÇÔ·®Àº NO$_3$-N:NH$_4$-NÀÌ 100:0ÀΠ󸮿¡¼­ °¡Àå ³·°í, NH$_4$-NÀÇ ºñÀ²ÀÌ ¸¹À»¼ö·Ï ³ô¾ÆÁ³´Ù. $CO_2$ ½Ã¿ë¿¡ ÀÇÇÏ¿© ¿±Áß Áú»ê¿°ÇÔ·®Àº °æ°¨ÇÒ ¼ö´Â ÀÖ¾úÀ¸³ª ±× È¿°ú´Â °æ¹ÌÇÏ¿´´Ù.´Ù.
Crisphead lettuce(Lactuca sativa L.) was grown in NFT to investigate the effects of NO$_3$-N and NH$_4$-N ratio in nutrient solution and elevated $CO_2$ treatment in the crisphead lettuce growth. This experiment has been conducted under three different ratios of NO$_3$-N:NH$_4$-N(100:0, 75:25, 50:50) with two $CO_2$ concentration (control, 1500ppm ). The results are as follows; 1. In the case of not controlling pH and EC in nutrient solution, pH was gradually increased in NO$_3$-N:NH$_4$-N=100:0 treatment but rapidly decreased in the nutrient solution 2. Daily changes of NO$_3$-N and NH$_4$-N were observed without controlling the nutrient solution. In the treatments of NO$_3$-N:NH$_4$-N ratios were 75:25 and 50:50, NO$_3$-N absorption rates were 27.7% and 26.1%, while NH$_4$-N absorption rates were 87.9% and 71.2%, respectively. 3. There was little differences in total nitrogen of leaves. However phosphorus, potassium, calcium and magnesium contents were highly shown in the treatment of $CO_2$ 1500ppm and 100:0 ratio of NO$_3$-N:NH$_4$-N. 4. Higher $CO_2$ assimilation rate was shown in plants grown under $CO_2$ 1500ppm and 100:0 ratio of NO$_3$-N:NH$_4$-N. It dropped significantly with the increase of NH$_4$- N rates in nutrient solution. 5. Fresh weight, leaf number, root length and root weight of crisphead lettuce were far better in the treatment of $CO_2$ 1500ppm and 100:0 ratio of NO$_3$-N:NH$_4$-N. Growth differences by $CO_2$ elevation were not shown in other NO$_3$-N:NH$_4$-N treatments. 6. The highest nitrate contents of leaves were shown in NO$_3$-N single treatment but shown the lowest vitamin C contents. Nitrate contents of leaves were decreased by $CO_2$ but the effect was slight treatment.
 
Ű¿öµå
$ extrm{CO}_2$ ½Ã¿ë;°á±¸»óÃß;$ extrm{NO}_3$-N:$ extrm{NH}_4$-N ºñÀ²;$ extrm{CO}_2$ treatment;head lettuce;$ extrm{NO}_3$-N:$ extrm{NH}_4$-N ratio;NFT;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.5, no.2, 1996³â, pp.120-130
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611922404958)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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