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˾ÂíÖî¸ð(½ð±Ò+1,VIP+0):лл½»Á÷ 7-14 09:34
˾ÂíÖî¸ð(½ð±Ò+1,VIP+0):лл½»Á÷ 7-14 09:34
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ÊÇʲôµÄN/P±È ÊÇPEIµÄÂ𣿠ÓÉÓÚPEIµÄ°±»ùµª´øÕýµçºÉ£¬DNAµÄÁ×Ëá¸ù´ø¸ºµçºÉ£¬PEI/DNAµÄµçºÉ±ÈÖ÷ÒªÓõªÁױȼ´N/P±ÈÀ´±íʾ¡£1¦ÌgDNAº¬3.08 nmolÁ×Ëá¸ù£¬1¦ÌgPEIƽ¾ùº¬ÓÐ23.25 nmol°±»ùµª£¬PEIÓëDNAµÄN/P±È¿ÉÒÔͨ¹ý¹«Ê½N/P£½£¨PEI ¦Ìg¡Á23.25£©/£¨ÖÊÁ£¦Ìg¡Á3.08£©£½7.53¡ÁPEI (¦Ìg) /DNA (¦Ìg)¼ÆËã[21] |
2Â¥2008-07-17 09:31:37
ashao
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˾ÂíÖî¸ð(½ð±Ò+2,VIP+0):лл½»Á÷ 7-14 09:33
˾ÂíÖî¸ð(½ð±Ò+2,VIP+0):лл½»Á÷ 7-14 09:33
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Ó¦¸ÃÊǵªÁױȣ¬Ò»¸öÖ²ÎïÉúÀíÑо¿Öеij£ÓÃÖ¸±ê : N-P ratio Ïà¹Ø.... : By xcm84 ·¢±íÓÚ 2007-10-28 9:08:00 : Biomass allocation and growth rates in Pinus sylvestris are interactively mo : dified by nitrogen and phosphorus availabilities and by tree size and age : Angelika Portsmuth, ¨¹lo Niinemets, Laimi Truus, and Margus Pensa : Can. J. For. Res./Rev. can. rech. for. 35(10): 2346-2359 (2005) : The overall decrease of growth in larger trees resulted from their lower lea : f-area ratio (LAR) and leaf dry mass ratio (FL). Increases in size further : led to a lower dry mass weighted average nitrogen (NW) but higher phosphor : us (PW) . We conclude that optimum productivity at a given NW requires a ce |
3Â¥2008-09-08 11:29:07
panfanbin
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˾ÂíÖî¸ð(½ð±Ò+1,VIP+0):лл½»Á÷ 7-14 09:33
˾ÂíÖî¸ð(½ð±Ò+1,VIP+0):лл½»Á÷ 7-14 09:33
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4Â¥2008-09-08 12:35:44
ashao
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5Â¥2008-09-17 15:01:12













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