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ÎÒÊÇ×ö»·¾³ÍÁÈÀµÄ£¬¾Í°ÑÌù·¢µ½Õâ¸ö°æ°É¡£ Á÷Ðеķ½·¨ÊÇË®ÍÁ±È1£º1»ìºÏÀ´²â£¬µ«ÓÐÁ½¸öȱµã£¬Ò»ÊÇËù²âµÃpHÖµ²»Îȶ¨£¬ÁíÍâ¾ÍÊÇËùÐèÒªÑùÆ·Á¿Îª5G£¬µ±ÄãµÄʵÑéÑùÆ·Á¿±È½ÏÉÙʱºÜÀË·ÑÑùÆ·¡£¸ù¾ÝÎÒµÄʵÑéÇé¿ö£¬ÎÒÔÚÍøÉÏÕÒÁËÏà¹ØµÄ×ÊÁÏ£¬·ÖÏíһϣº There are many different ways of measuring the pH of soil. Some use a saturated paste extract, others use a 1:5 dilution of soil: water, and then take a pH measurement on the resulting solution with a laboratory meter. Others use the 1:5 dilution, but instead of water they use a dilute Calcium Chloride (CaCl² solution. As a rough guide, the pH in CaCl² is usually 0.8 pH lower than in water, but can be as much as 2.0 pH units lower on grey sands. Ensure that you check the method used to measure you soil pH so that you are comparing similar methods.![]() ´ÓÉÏÃæµÄͼƬ¿ÉÒÔ¿´µ½£¬¼ÓÁËCaCl² Ö®ºópH±äµÃ·Ç³£Îȶ¨ÁË£¬ÊÇÒòΪCa2+½»»»ÁËÍÁÈÀÖеı»Îü¸½µÄH+¡£ ¸ù¾ÝÄãµÄÐèҪѡÔñºÏÊʵķ½·¨°É¡£ÏêϸÇé¿öÇë¿´ÔÎÄhttp://www.eutechinst.com/techtips/tech-tips6.htm |
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solution. As a rough guide, the pH in CaCl² is usually 0.8 pH lower than in water, but can be as much as 2.0 pH units lower on grey sands. Ensure that you check the method used to measure you soil pH so that you are comparing similar methods.
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