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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.10, no.3, 2001³â, pp.133-140
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¼øÈ¯½Ä ÆÞ¶óÀÌÆ®Àç¹è¿¡¼ Àü±âÀüµµµµ¿Í ¾ç¾×Èí¼ö·®À» ÀÌ¿ëÇÑ ¿ÀÀÌ ¾çºÐ Èí¼ö ¸ðµ¨¸µ
( Modeling Nutrient Uptake of Cucumber Plant Based on Electric Conductivity and Nutrient Solution Uptake in Closed Perlite Culture ) |
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| ¼øÈ¯½Ä ÆÞ¶óÀÌÆ®Àç¹è¿¡¼ ¹è¾× Àç»ç¿ëÀ» À§ÇÑ ¾çºÐÈí¼ö ¸ðµ¨¸µÀ» ÀÛ¼ºÇϰíÀÚ ¾ç¾× ³óµµ(1.5, 1.8, 2.1, 2.4, 2.7 dS./m-1)¸¦ ´Þ¸®ÇÏ¿© ¼öÇàÇÏ¿´´Ù. »ýÀ° Áß±â±îÁö Àü±âÀüµµµµ(EC) ¼öÁØ¿¡ µû¸¥ ¾ç¾×Èí¼ö·®Àº Â÷À̰¡ ¾ø¾úÁö¸¸ Áß±â ÀÌÈÄ EC°¡ ³ôÀ»¼ö·Ï Èí¼ö·®ÀÌ °¨¼ÒµÇ´Â °æÇâÀ» º¸¿´´Ù. N $O_{3-}$ N, P ¹× KÀÇ Èí¼ö·®Àº »ýÀ°±â°£ µ¿¾È 󸮰£ Â÷ÀÌÀ» À¯ÁöÇÏ¿´´Âµ¥ N°ú K´Â »ýÀ° Áß±â ÀÌÈÄ ÀÏÁ¤ ¼öÁØÀ» À¯ÁöÇÏ¿´À¸³ª P´Â »ýÀ°±â°£µ¿¾È ´Ù¼Ò Áõ°¡µÇ´Â °æÇâÀ» º¸¿´´Ù. SÀÇ Èí¼ö·®Àº »ýÀ° Áß±â ÀÌÈÄ ¸ðµç 󸮿¡¼ ±Þ°ÝÇÑ °¨¼Ò¸¦ º¸¿´À¸¸ç »ýÀ° Èı⿡´Â 󸮰£¿¡ Â÷À̰¡ ¾ø¾ú´Ù. ¿ÀÀÌÀÇ ¹«±âÀ̿ Èí¼öÀ²¿¡¼¿Í °°ÀÌ Èí¼ö·®¿¡¼µµ EC°£ Â÷À̸¦ º¸¿© EC¸¦ ¹«±âÀ̿ Èí¼ö·®À» ÃßÁ¤ÇÏ´Â ¿ä¼Ò·Î ÀÌ¿ëÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢µÇ¾ú´Ù. ¹«±âÀ̿ Èí¼ö·®Àº ¸ðµç EC 󸮰£¿¡ »ýÀ° Ãʱ⿡´Â Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÀ¸³ª »ýÀ°Áß±â ÀÌÈÄ¿¡´Â ¶Ñ·ÇÇÑ Â÷À̸¦ º¸ÀÎ ÈÄ »ýÀ° ÈıâÀÇ ³ôÀº ³óµµ¿¡¼ ±× Â÷À̰¡ ´Ù¼Ò °¨¼ÒµÇ´Â °æÇâÀ» º¸¿´´Ù. EC¿Í ¾ç¾×Èí¼ö·®À» ÀÌ¿ëÇÏ¿© ¹«±âÀ̿º° Èí¼ö·®À» ¿¹ÃøÇÏ´Â ¸ðµ¨½ÄÀ» ÀÛ¼ºÇÏ¿´À¸¸ç À̸¦ ÀÌ¿ëÇÑ ½ÇÃøÄ¡¿ÍÀÇ ºñ±³´Â ½Å·Ú±¸°£ 1%³»¿¡¼ ³ôÀº Á¤ÀÇ»ó°üÀ» º¸¿© ½ÇÁ¦ÀûÀÎ Àû¿ëÀÌ °¡´ÉÇÒ °ÍÀ¸·Î »ý°¢µÇ¾ú´Ù. |
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| This study was conducted to develop a nutrient uptake model in cucumnber (Cucumis sativus L. cv. Eunsung Backdadagi) plants for prediction of the amount of nutrients in drainage solution in a closed perlite culture system. Electrical conductivity (EC) of the nutrient solution was adjusted to 1.5, 1.8, 2.1, 2.4, and 2.7 dS. $m^{-1}$ . The amount of nutrient solution absorbed in different EC treatments was not different until the mid stage of growth. However, after the mid growth stage, a high EC treatment resulted in less solution absorption. The absorption rates of K, N $O_3$$^{[-10]}$ -N, Mg, and P increased continuously for a whole growing period in all treatments, while those of Ca decreased slightly. For S, the decrease was significant after th mid stage of growth. although the amounts of absorbed inorganic ions in different EC treatments were not significantly different at the first stage of growth, they were significantly different after the mid stage of growth and decreased slightly at the end of growth stage. Models for predicting the amounts of each inorganic ion absorbed were developed by using EC and the amount of nutrient solution absorbed per unit radiation(mg.M $J^{-1}$), which proved to be practical with a positive correlation at 1 percent probability between the developed model and practical values.. |
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| ¿ÀÀÌ;¼øÈ¯½Ä ¼ö°æÀç¹è;ÆÞ¶óÀÌÆ®;¹«±âÀÌ¿Â;¸ðµ¨¸µ;cucumber;hydroponics;closed culture;perlite;nutrient ion;modeling; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.10, no.3, 2001³â, pp.133-140
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920844720)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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