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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.9, no.2, 2000³â, pp.73-78
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( Evaluation on the Physical and Chemical Properties of Expanded Rice Hulls as Hydroponic Culture Medium ) |
| ±è°æÈñ;ÀÓ»óÇö;³²±Ã¾çÀÏ;À¯±Ùâ; °¿øµµ ³ó¾÷±â¼ú¿ø;°¿øµµ ³ó¾÷±â¼ú¿ø;°¿øµµ ³ó¾÷±â¼ú¿ø;°¿ø´ëÇб³ ¿ø¿¹Çаú;
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| º» ¿¬±¸¿¡¼´Â À¯±â¹° Àç·á·Î ±¸µæÀÌ ½±°í ¼ö·®ÀÌ Ç³ºÎÇϸç Àç·áÀÇ ±ÕÀϼºÀÌ ÁÁÀº ¿Õ°Ü¸¦ ÆØ¿¬È ÇÏ¿© ¾ç¾×Àç¹è¿ë ¹èÁö Àç·á »ç¿ëÇϱâ À§ÇØ ÀûÇÕÇÑ Á¶°ÇÀ» Ž»öÇØ º¸¾Ò´Ù. ÆØ¿¬È ¿Õ°ÜÀÇ ¹°¸®¼ºÀº CEC 37.0cmol.kg-1, °¡ºñÁß 0.19g.§¨, -0.1 bar »óÅ¿¡¼ º¸¼ö·Â 271.0À¸·Î ÆÞ¶óÀÌÆ®º¸´Ù ¿ì¼öÇÏ¿´À¸³ª Èí¼ö¼Óµµ´Â ÆÞ¶óÀÌÆ®¿¡ Å©°Ô ¶³¾îÁö´Â °æÇâÀ̾ú´Ù. ÆØ¿¬È ¼öÁØÀÌ ³ô¾ÆÁü¿¡ µû¶ó º¸¼ö·Â, Èí¼ö¼Óµµ µî ¼öºÐ°ü·Ã ¹°¼ºÀÌ ÁÁ¾ÆÁö´Âµ¥ ¹ÝÇØ ÀÔµµ°¡ ÀÛ¾ÆÁö°í ºÎ¼÷¼Óµµ°¡ »¡¶óÁö´Â º¯È°¡ ÀÖ¾ú°í Àç¹èÁß ºÎ¼÷ÀÌ ÁøÇàµÊ¿¡ µû¶ó ±Þ¾× 15ÀÏ ÀÌÈĺÎÅÍ pH°¡ »ó½ÂµÇ¸ç 15~20ÀÏ »çÀÌ¿¡ NO3 ºÎÁ·ÀÌ ½ÉȵǾî ÀÛ¹°¿¡ ½ºÅ×·¹½º¸¦ ÁÖ´Â °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. ERH a󸮿¡¼ ´çµµ°¡ ÆÞ¶óÀÌÆ®¿¡ ºñÇØ ¾à 1.0 ¡£BrixÁ¤µµ ³ô°í ¼ö·®ÀÇ À¯ÀǼºÀº ¾ø¾úÀ¸¹Ç·Î Æ´»õ°£±Ø 8mm, ³¯³ôÀÌ 3mm¿¡¼ »ý»êµÈ ÆØ¿¬È ¿Õ°ÜÀÇ ¹°¼ºÀÌ ¾ç¾×Àç¹è¿ë ¹èÁö Àç·á·Î »ç¿ëÇϱ⿡ ÀûÁ¤ÇÏ¿´´Ù. |
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| This study was carried out to investigate appropriate processing conditions for expanded rice hulls to be used as a medium material in nutrient cultures. The water holding capacity of expanded rice hulls produced by using a domestic grinder with 8 mm gap and 3 mm cutter height was 271.0, and the bulk density and CEC were 0.19g¡¤m-3 and 37.0 cmol¡¤kg-1, respectively. These values are higher than those of perilte. However, geometric mean diameter (GMD) of expanded rice hulls was 1.01mm which was smaller than that of perlite, indicating unfavorable porosity. After supplying nutrient solution, the faster water percolation in expanded rice than perlite required more frequent water supply. There was no significant difference in tomato fruit yield between expanded rice hull and perlite. The pH increase and the lack of nitrogen in early stage of culture are to be solved in the future. |
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| Ű¿öµå |
| Å丶Åä;¹èÁöÀç·á;tomato;medium; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.9, no.2, 2000³â, pp.73-78
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011919961528)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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