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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.18, no.3, 2009³â, pp.238-243
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TDR ¼¾¼¸¦ ÀÌ¿ëÇÑ ¾Ï¸é ½½¶óºê ¼öºÐ Ư¼º ºÐ¼® ¹× ÆÄÇÁ¸®Ä« Àç¹èÀÇ Àû¿ë ¿¹
( Analysis of Moisture Characteristics in Rockwool Slabs using Time Domain Reflectometry (TDR) Sensors and Their Applications to Paprika Cultivation ) |
| ¹ÚÁ¾¼®;´º¿£Å¸ÀÌ;¾ÈÅÂÀÎ;¼ÕÁ¤ÀÍ; ¼¿ï´ëÇб³ ½Ä¹°»ý»ê°úÇкÎ;¼¿ï´ëÇб³ ½Ä¹°»ý»ê°úÇкÎ;¼¿ï´ëÇб³ ½Ä¹°»ý»ê°úÇкÎ;¼¿ï´ëÇб³ ½Ä¹°»ý»ê°úÇкÎ;
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| TDR ¼öºÐÇÔ·® ÃøÁ¤ ¼¾¼¸¦ ÀÌ¿ëÇÏ¿© ¾Ï¸é ½½¶óºê ¹èÁöÀÇ ¼öºÐÇÔ·®, ¼öºÐºÐÆ÷, ¹è¾× ½ÃÁ¡ÀÇ Æ¯¼º°ú Æ÷¼ö ½ÃŲ ½½¶óºê ¹èÁöÀÇ ¼öºÐÇÔ·® ºÐÆ÷¸¦ Áß·®¹ý(·Îµå¼¿ ÀÌ¿ë)°ú TDR ¹ýÀ¸·Î ºñ±³ÇÏ¿´´Ù. ¹èÁö¼öºÐ ÇÔ·®ÀÌ 40%, 50%, 60%¸¦ TDR ¼¾¼ 3°³ÀÇ Æò±Õ°ªÀ» ±âÁØÀ¸·Î ±Þ¾×½ÃÁ¡À» Á¤Çϸç $5{sim}6$°³¿ù°£ ÆÄÇÁ¸®Ä« 72ÁÖ¸¦ À¯¸®¿Â½Ç¿¡¼ Àç¹èÇÏ¿´´Ù. µÎ °÷ÀÇ ±Þ¾× Æ÷ÀÎÆ®·ÎºÎÅÍ µî°£°ÝÀ¸·Î ¼³Ä¡µÈ 5°³ÀÇ TDR ¼¾¼¸¦ ÀÌ¿ëÇÏ¸ç °ÇÁ¶»óÅ¿¡¼ 0.2L¾¿ ½Ä Áõ¾×½ÃŰ¸é¼ ±Þ¾×½Ã ½½¶óºê³»ÀÇ ¼öºÐºÐÆ÷ Ư¼ºÀ» »ìÆìº» °á°ú ±Þ¾× Àå¼Ò¿Í °ü°è¾øÀÌ ½½¶óºê³»ÀÇ À§Ä¡º° ¼öºÐ ºÐÆ÷°¡ ¸Å¿ì À¯»çÇÑ °ªÀ» ³ªÅ¸³»¾ú´Ù. ½½¶óºê³»ÀÇ Æ÷ȼöºÐ »óÅ¿¡¼ TDR ¼¾¼°ªÀº ¾à $58{sim}65%$ »çÀÌÀÇ °ªÀ» ³ªÅ¸³»¾úÀ¸¸ç, ¾à $50{sim}55%$ÀÇ ¼öºÐÇÔ·® Á¶°Ç¿¡¼ ¹è¾×ÀÌ ½ÃÀ۵Ǵ °ÍÀ» È®ÀÎ ÇÒ ¼ö ÀÖ¾ú´Ù. ¹è¾ç¾×À¸·Î ¿ÏÀü Æ÷ȽÃŲ ½½¶óºêÀÇ TDR °ªÀº 100%¸¦ º¸ÀÎ ¹Ý¸é Áß·®¹ýÀ¸·Î ÃøÁ¤ÇÑ À¯È¿¼öºÐÇÔ·®(v/v, %)Àº 90%¸¦ ³ªÅ¸³»¾ú´Ù. ±×·¯³ª Áõ¹ß¿¡ ÀÇÇØ ½½¶óºê³»ÀÇ ¼öºÐÇÔ·®ÀÌ ³·¾ÆÁö¸é¼, µÎ ÃøÁ¤°£ÀÇ ¿ÀÂ÷µµ ÁÙ¾îµé¾î, ¾à 60% ÀÌÇÏÀÇ ¼öºÐÇÔ·® Á¶°Ç¿¡¼ µÎ ÃøÁ¤¹æ½Ä°£ÀÇ ¿ÀÂ÷´Â 5%¹Ì¸¸À» º¸¿´´Ù. ÀÌ·¯ÇÑ °á°ú´Â °úä·ù ±Þ¾× Á¦¾î ¹æ½ÄÀ¸·Î TDR ¼¾¼ÀÇ ÀÌ¿ë °¡´É¼ºÀ» È®ÀÎ ÇÒ ¼ö ÀÖ¾úÀ¸¸ç, ±Þ¾× ½ÃÁ¡À» 3°¡Áö ¹èÁö¼öºÐÁ¶°ÇÀ¸·Î ÆÄÇÁ¸®Ä«¸¦ Àç¹èÇÏ¿´À» ¶§ ÆÄÇÁ¸®Ä«ÀÇ °ú¼ö, °úÁß, ½Ä¹°Ã¼ÀÇ ¿±¸éÀû ¶Ç´Â °æÀå°ú °°Àº ¸ðµç ¿äÀο¡¼ À¯ÀÇÀûÀÎ Â÷À̸¦ ¹ß°ß ÇÒ ¼ö ¾ø¾ú´Ù. |
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| To investigate the characteristics of moisture content (MC), moisture distribution and starting point of drainage in a rockwool slab culture, time domain reflectometry (TDR) sensors were used in a drip irrigation system. MC values ($0{sim}100%$) measured by TDR sensors in a slab were compared to those by loadcells. Seventy two seedlings of paprika (Capsicum annuum L.) were cultured for $5{sim}6$ months in a green-house and the starting point of irrigation was determined by the average value of three TDR sensors which were inserted diagonally across the slabs under the plants. MCs as a standard for starting point of irrigation by TDR were determined with 40%, 50%, and 60%. Distribution of MCs in a slab measured with five TDR sensors equally spaced from two irrigation points were not much different when the MC in the slab increased from zero to saturation point. The saturated MCs in the slab were presented at $58{sim}65%$ and the drain was started when the MC became around $50{sim}55%$. At the saturated MC in the slab, TDR sensors presented 100% but the values from the loadcell showed 90% at the same time. However, measurement errors between two methods for MC remarkably decreased with a decrease in the MC in a slab. Especially when the MC was maintaining below 60%, the errors between TDR and loadcell methods for measuring MC in the rock-wool slab were less than 5%. There were no significant differences in number of fruits and fresh and dry weights of fruits when they were cultured under the different MC conditions with three irrigation regimes (40%, 50%, and 60%). These results indicated that the MC control by TDR sensors in a rock-wool based paprika culture can be suggested as a method to determine the starting point of irrigation for a soilless culture system. |
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| Ű¿öµå |
| °ü¼ö ½ÃÁ¡;¹è¼ö;ÆÄÇÁ¸®Ä«;ÇÔ¼öÀ²;drainage;irrigation timing;moisture;paprika;substrate;TDR; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.18, no.3, 2009³â, pp.238-243
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200935535843635)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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