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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.4, no.2, 1995³â, pp.175-180
Å丶Åä ¾ç¾× Àç¹è½Ã ºñÆÄ±« °£ÀÌ Áú¼Ò ¿µ¾ç Áø´Ü
( Nondestructive Nutrient Diagnosis for Nitrogen with Specific Color Difference Sensor(SCDS) in Hydroponics of Tomato (Lycopersicon esculentum MILL.) )
ÀÌ¿ë¹ü;³ë¹Ì¿µ;Á¶¿µ·Ä;¹èÁ¾Çâ; ¼­¿ï ½Ã¸³ ´ëÇб³ ȯ°æ ¿ø¿¹Çаú;¼­¿ï ½Ã¸³ ´ëÇб³ ȯ°æ ¿ø¿¹Çаú;¼­¿ï ½Ã¸³ ´ëÇб³ ȯ°æ ¿ø¿¹Çаú;¼­¿ï ½Ã¸³ ´ëÇб³ ȯ°æ ¿ø¿¹Çаú;
 
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º» ¿¬±¸´Â SCDS(specific color difference sensor)¸¦ ÀÌ¿ëÇÏ¿© Å丶ÅäÀÇ ºñÆÄ±«ÀûÀÎ Áú¼Ò ¿µ¾ç Áø´Ü ¹æ¹ýÀ» È®¸³Çϱâ À§ÇÏ¿© Áú¼Ò ³óµµ¸¦ 0, 10, 50, 100, 150, 200, 300, 600ppmÀ¸·Î Á¶ÀýÇÏ¿© NFT¹æ½ÄÀ¸·Î ½ÇÇèÀ» ¼öÇàÇÏ¿´À¸¸ç ±× °á°ú¸¦ ¿ä¾àÇÏ¸é ´ÙÀ½°ú °°´Ù. ¹è¾ç¾× ³»ÀÇ Áú¼Ò ³óµµ°¡ 0ppm¿¡¼­ 150ppmÀ¸·Î ³ô¾ÆÁü¿¡ µû¶ó Å丶Åä ÀÙÀÇ ±â°ø ÀúÇ×Àº ±Þ°ÝÈ÷ ÁÙ¾îµç ¹Ý¸é ±â°ø È®»ê ¼Óµµ´Â Áõ°¡ÇÏ¿´´Ù. ÇÑÆí, Áú¼Ò ³óµµ°¡ ³ô¾ÆÁü¿¡ µû¶ó ±¤ÇÕ¼º ¼Óµµµµ Áõ°¡ÇÏ¿´Áö¸¸ 100ppm¿¡¼­ ºÎÅÍ 600ppm±îÁö´Â Å« Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. Å丶Åä ÀÙÀÇ SCDS°ªÀÌ ³ô¾ÆÁü¿¡ µû¶ó ±¤ÇÕ¼º ¼Óµµ´Â Á÷¼±ÀûÀ¸·Î Áõ°¡ÇÏ¿´À¸¸ç Æò±Õ °úÁß°ú »óǰ ¼ö·®Àº 2Â÷ °î¼±¸ð¾çÀ¸·Î Áõ°¡ÇÏ´Â °æÇâÀ» º¸¿´´Ù. ¿±³» Áú¼Ò ÇÔ·®ÀÌ 3% Á¤µµµÉ ¶§±îÁö ±¤ÇÕ¼º ¼Óµµ´Â Å©°Ô Áõ°¡ÇÏ¿´Áö¸¸ 3.3-3.5% ¼öÁغÎÅÍ ±¤ÇÕ¼ºÀº Æ÷È­»óŸ¦ ³ªÅ¸³Â´Ù. Å丶Åä ÀÙÀÇ SCDS°ª°ú ¿±³» Áú¼Ò ÇÔ·® °£¿¡´Â °íµµ·Î À¯ÀÇÇÑ Á¤ÀÇ »ó°üÀ» º¸¿´´Ù. Å丶ÅäÀÇ »ý¸®Àû Ȱ¼º, »ýÀ° ¹× »óǰ ¼ö·®À» °í·ÁÇØ º¼ ¶§, ¿±³» Áú¼Ò ÇÔ·®ÀÇ ÀûÁ¤ ¹üÀ§´Â 3.0-3.8%ÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÌ ¹üÀ§¿¡ ÇØ´çµÇ´Â SCDS°ªÀº 40.4-52.2¿´´Ù.
This study was conducted to establish the nondestructive nutrient diagnosis method for nitrogen in tomato leaf using SCDS(specific color difference sensor). NFT(nutrient film technique) system was used in this experiment and nitrogen concentrations treated in nutrient solution were 0, 10, 50, 100, 150, 200, 300 and 600ppm. As nitrogen concentration in nutrient solution was increased from 0ppm to 150ppm, the stomatal resistance of tomato leaf was decreased abruptly, the $CO_2$ assimilation rate was increased but there was no big difference in the range of 100-500ppm. As the SCDS value of tomato leaf was increased, the $CO_2$ assimilation rate was increased linearly but the total average fruit weight and marketable yield were increased quadratically. The $CO_2$ assimilation rate was largely increased in the 0-3% range of leaf nitrogen content, but photosynthetic saturation was shown in 3.3-3.5%. The leaf nitrogen content was closely related to SCDS value of tomato leaf. Considering physiological activity, growth and yield of tomato, the optimum ranges of leaf nitrogen content were found to be 3.0-3.8% and the SCDS values equivalent for those ranges were 40.0-52.2.
 
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Å丶Åä;¾ç¾×Àç¹è;Áú¼Ò;¿µ¾çÁø´Ü;SCDS;tomato;hydroponics;nitrogen;nutrient diagnosis;specific color different sensor;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.4, no.2, 1995³â, pp.175-180
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199511922404650)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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