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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.5, no.2, 1996³â, pp.145-151
»óÃß ¼ö°æÀç¹è½Ã »ý¸®Àû »ê, ¾ËÄ®¸®¸¦ ÀÌ¿ëÇÑ ¹è¾ç¾× pHÀÇ ÀÚµ¿ Á¶Àý
( Automatic pH Control of Nutrient Solution by Physiological Fertilizers in Lettuce Hydroponics )
±èÇýÁø;±è¿µ½Ä; »ó¸í´ëÇб³ ¿ø¿¹°úÇаú;»ó¸í´ëÇб³ ¿ø¿¹°úÇаú;
 
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¼ö°æÀç¹è½Ã º¯È­ÇÏ´Â ¹è¾ç¾× pH¸¦ µ¿ÀûÀ¸·Î Á¶ÀýÇϱâ À§ÇÑ ¹æ¹ýÀ¸·Î »ý¸®Àû »ê, ¾ËÄ®¸®¿Í È­ÇÐÀû »ê, ¾ËÄ®¸®ÀÇ È¿À²¼ºÀ» °ËÅäÇÏ¿´´Ù. ¹è¾ç¾× ÀÚµ¿Á¶Àý½Ã½ºÅÛ¿¡ »ý¸®Àû »ê, ¾ËÄ®¸®·Î NH$_4$H$_2$PO$_4$ ¹× NaNO$_3$¸¦ ÀÌ¿ëÇϰí, È­ÇÐÀû »êÀ¸·Î H$_2$SO$_4$¸¦ ÀÌ¿ëÇÏ¿© »óÃ߸¦ Àç¹èÇÑ °á°ú, 󸮿¡ °ü°è¾øÀÌ ¹è¾ç¾×ÀÇ pH¸¦ ¾ÈÁ¤ÀûÀ¸·Î Á¶ÀýÇÒ ¼ö ÀÖ¾ú´Ù. »ý¸®Àû »ê, ¾ËÄ®¸®ÀÇ °æ¿ì È­ÇÐÀû »ê, ¾ËÄ®¸®º¸´Ù ¹è¾ç¾× pH¸¦ ±Þ°ÝÈ÷ º¯È­½ÃÄ×À¸¸ç, ±×¿¡ µû¸¥ ÇØÀÛ¿ëÀº ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù. ±×·¯¹Ç·Î »óÃßÀÇ ¼ø¼ö¼ö°æÀç¹è½Ã ¹è¾ç¾×ÀÇ pH¸¦ ÀÚµ¿Á¦¾î Çϱâ À§ÇÑ ¹æ¹ýÀ¸·Î, »ýÀ° ±â°£ Áß¿¡´Â È­ÇÐÀû »ê, ¾ËÄ®¸®¸¦ ÀÌ¿ëÇÏ¿© pH¸¦ Á¶ÀýÇÏ°í ¼öÈ® ¸çÄ¥ ÀüºÎÅÍ NH$_4$H$_2$PO$_4$¸¦ È­ÇÐÀû ¾ËÄ®¸®¿Í °âÇØ¼­ °ø±ÞÇÏ´Â °ÍÀÌ ¹Ù¶÷Á÷ÇÑ °ÍÀ¸·Î »ç·áµÈ´Ù.
The effectiveness of physiological or chemical acid - alkali solution was investigated as the method to control pH value of nutrient solution in hydroponics dynamically. Lettuces were cultivated using NH$_4$H$_2$PO$_4$ as physiological acid and NaNO$_3$ as physiological alkali or H$_2$SO$_4$ as chemical acid in dynamic control system. The pH of nutrient solution was controlled satisfactorily in the range of pH 5.5-6.5, regardless of treatments. Chemical acid changed pH of solution faster than chemical acid when supplied to the nutrient solution. Any of them did not show any harmful symptom. It is recommended that chemical acid is preferred during the growing stage and physiological acid like as NH$_4$H$_2$PO$_4$ is preferred from several days before harvest stage.
 
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»óÃß;¹è¾ç¾×;pH Á¶Àý;¼ö°æÀç¹è;lettuce;nutrient solution;pH control;hydroponics;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.5, no.2, 1996³â, pp.145-151
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611922405007)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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