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腋腈腍腉腎腇腂腃腄腆腊腁腀腂腅腌 腎膕* Soil Humic Substances : their Chemical Structures and Functions Syuntaro HIRADATE* * Biodiversity Division, National Institute for Agro-Environmental Sciences (NIAES), -+- Kan-nondai, Tsukuba, Ibaraki -*/20*., Japan Key words : Soil humic substances, Humic acids, Fulvic acids, Humins, Hydrophilic fulvic acids +腈腅腉腆 臙腝腢膮膩膉腟腢臍腔腯 至膗腓腘膵腔膈臑腡膁腺膇腟臠臉自腜腇腮腵腁腸腟腞腲臄臻腔腯臑腍膘腭腌腡膗腲臞腐 臻腓腘腪腡腝臅腊腭腰腛腈腯腑腡腘腩膟腡腡腦腡臜腈腁腸腁腏臄臻臑腟腞腢臙腝腨腟腒腰腟腈 Soil Science Society of America, +331腄腀 腓腌腓腑腡膲腢腞腰腪膖膄腜腇腮臀膳臛腠 腬腙腛腪臗腠腬腙腛腪臙腡腢膍腟腯膿膛臙腢膲腔腭腢腙腎腮腖腕臡腙腛臚 腪腚腌腨腠腏腈腝腈腉腎腟膇腕腥腊腛腈腯腏腠膹腜腢臀膳腡臶腠腬腮臭膰腡膣腜腢腓腎腰腟腈腷腂腸腪臊腒腰腯腬腉腠腟腙腛腎腘膃腾臊腜腢臙腡膗膥臄腝膯腠膪腔腯臌 膹腡臀膳腡腌腭腻腽腹腵腸腲臫膞腓臋臃膟膾腔腥腎 腀膎腔腯,腤腟腥腠腦腜腇腧腙 臙腢膁腺膇腟膗膥臄腲臖腙腘臙腡臠臉腇腯腘腩腗腡臄臀膳腢 膗膥臄腍臕腛腈腯 腶膆腂膀腠膝腓 腗腡膦臻腲腥腯腝腈腉 臝臦腍膑腳腢腠腟腙腛腈腯腑腑腜腢腧腕腠腚 腈腛臫膞腔腯臙腢臏腋腬腤腳膆腴膅腠腔腯膟臺腠 腬腮腼膄腂膃膈 腳膆腴膅腶膌腶膌腄腁 臲臏 膆腴膅膚腶膌腄腁 腋腬腤腾膆膂臏 腳膆腴膅膚臏膚- 腐腭腰腯臙腠膪腔腯 腑腰腧腜腡臀膳腡腏腢臲臏腲臬腝腓腛腎腘腑腰 腠腋腐腯臲臏腡膬腍臈腈腝腈腉膎膉腡腦 腌腠腂腃膌腜腇腯腝腈腉膎膉腎腌腙腘腝臓腱 腰腯腓腌腓臲臏腡腠腋腐腯膎臺腟腞腢 腼膄腂膃膈腝腾膆膂臏腡腟臺臙腲臖腚腝臅腊腭腰 腯腑腝腌腭臯腠腋腐腯臙腡膉膗膯臄腡膟腠腢腬腮膉腟腼膄腂膃膈腍腠腋腐腯腞腹臑膗 腡膎臂臬腠腢腬腮膎臺腡腎腈腾膆膂臏腍腬腮 腜腇腯腝臅腊腭腰腯腑腡腬腉腟膼腌腭腼膄腂膃膈腫腾膆膂臏腪臈膠臟腂腃膂腒腰腛腈腯致腘腟膁膂腡膡腠腇腘腙腛腢臬腝腔 臙腍腠腋腈腛腞腡腬腉腟膻臖腒腰 腛腈腯腌腲膟腔腯腑腝腍腔腻腜腇腙腘,+ 腏腕腁腓腘腇腣腝腨 臙腢臸膿臉腠腬腙腛臖腒腰腛腈腯腝腡 臅臎腌腭腬腇 H,NCONH,膙腔腯腑腝腠腬腮臸 膿臉腲腅腗腼膄腂膃膈腲臯腌腭腹膏腔腯膁膂膊腒腰腛腈腯腩膋腡臅臎腌腭DMSO Dimethylsul- foxide, H-CSOCH-膙腓腛臯腌腭腼膄腂膃膈腲 臣腔腯膁膂腋腬腤腬腇DMSO 腠腬腯臣腲腨臉 腱腖腯膁膂腟腞腍膊腒腰腛腈腯 Guixue et al., ,**0腄腀 腟腋臯腌腭臲臏腝腾膆膂臏腲臣腓腘臐腼膄腂 膃膈膯臇腠腾腹膗臸腲腦腞腑腓膯臇臩膴腔腯腑腝腠腬腙腛腼膄腂膃膈腲腛腃 腔腯膁膂腪腇腯腍腾腹膗臸腠腬腙腛腼膄腂膃膈 腪腇腯腡腦腹膟腒腰腯膽腪腇腯,, 腐腖腑腛腇腣腝腡腢腨 腾膆膂臏腲臯腌腭臣腔腯腑腝腢腢膊膌腜腇腯腓腌腓臣腓腘臱腜腢NaCl 腟腞腡膔腋腬腤臸腍膬腧腰腛腈腯腘腩 膋膖腾膆膂臏腄腁 腑腡腧腧腜腢膗膥腹腄腠膶臔腜腎腟腈腧腘腑腡膆膂臏腠腢臙腡膲腌腭膢腰腯膗臉腪膬腧腰腛腈腯膚臺腍腇腯腾膆膂臏腢臏腋腬腤腳 膆腴膅腡腈腕腰腠腓腛腪膚臺腜腇腯腘腩* 腪膑臆臼膸膧膷膱臤臀膳臨腁腸腍膋臺臀膳-*/20*. 膒臮臁腚腏腣臒膨膕-+- 腋腁腗腁腎 : 臲臏腾膆膂臏腼膄腂膃膈臵臸臺腾膆膂臏 J. Jpn. Soc. Soil Phys. 臯腡腸膎No. +*/, p. ,--* ,**1腌腘腒腍腊腔

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Page 1: No. +*/,p.,- -* ,**1 - University of Tokyosoil.en.a.u-tokyo.ac.jp/jssp/db/pdf/105023.pdf · Soil Humic Substances : their Chemical Structures and Functions Syuntaro HIRADATE* * Biodiversity

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Soil Humic Substances : their Chemical Structures and Functions

Syuntaro HIRADATE*

* Biodiversity Division, National Institute for Agro-Environmental Sciences (NIAES),

-�+�- Kan-nondai, Tsukuba, Ibaraki -*/�20*., Japan

Key words : Soil humic substances, Humic acids, Fulvic acids, Humins, Hydrophilic fulvic acids

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,**- ; Yamaguchi et al., ,**."�  F¦�§�¨��67�}��J�©J¨��ªK�LP�<���������M'�!Gerke, +33- ; Hiradate and Uchida, ,**. ;

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tic acid" �-~©J���� Y!Z�«M�N�®¯��( ,, .-D��P�f�gc����$P���?°� ��\&�± !pKQ" � ,.2,p�( ��T²�pH# ,.2D°J�D��-~,�� ��f�gc����\&�R³S������� !j�."( ����� ��R³S#-~��������T³S��H,´-��u� �S��BC !��r��H¢" �D°©JH¢#���µ<�#p�( )�� f�gc����=���H¢�D��-~�� F¦��x{=�����µ<�Xp� !j�+¶·"( &M�� ,, .-D��P�

��. ,, .-Dichlorophenoxyacetic acid !,, .-D"� �["A : seGr¸� B : \&¸

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+33.+ 6��78� ,, .-D 9��"����:��2���� �;����!�"�:��2��4<=� �>8� � �!�" 1.,��?.@A0BC;#46�#$��!��D H,O,%&����'E��#$�F � ,, .-D ��!D(G��46H� )>2I4JKLM4�8��7�� 9*� 6�#$78+��,�?(NOPQ *�+ R�DS:';4 ,, .-D ��!TU�� 6�6478� ,, .-D �#$���,�?(NOPQ *�+ R�-.2V6��WXYZ/[�\0�1]D^����:� #$�!�_2 *����� �_2+ 3� 445�� �7�� 6��2�`a2#$�!� ,, .-D

D��b�4��5��;���� *e.g., Benoit et al.,

+330 ; Cox et al., ,**++�6c?.@A0BC;#78��RD78�� Ca 1� Al 1� Fe 14����RD98�� ,, .-D ��!D(G�� d�e^� Ca 1��RI4JK ,, .-D D����7�������� Al 1��� Fe 1���R ,, .-D D�!���b�64�f7�� ��� 6� Al 1��R4 Al�R�� ,, .-D

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�hij'�D:k��� Al;�l��-.�Rm�,, .-D 4�WXYZ *��+ ���<=�>F!�Dn�� �4o=8�� *Hiradate et al., ,**1+

.�, ��������� ������#$?��p���q@rA�� ����?2

�s��B3C�� @(tRu��v2�Dg 4o=8�� ���@(tR� Ew�4x(tyz(m�FJ2 ��� x(tyz(m�We"DGc�H{IJ4K"0D|��}�9*2� e"�_2�� Ew�� �B�DL2b���� B3C�� H{I���K"0�|���� #$?2�H{IJ�q@rA�v2�� �64�o=8�� ���@(tR����4x(tyz(m�FJ2 ��������!�"4����� DGc�K"0D|��� #$M2q@�}�!�Dn�� �4o=8�� *Hiradate et al., ,**0a+

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���������� ����������� ������������ !��" � ���#$��%&�'()#$*+,-.�/0123(45�6� � ��67����)89,:;�<=>?@��A�BC����DEF�" GH� IJ5K��LAM!#$,N.�O=6��PQR"

� � � �

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7����� S +*/T U,**1V28

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