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ª×èͪÑé¹´Ô¹ |
¤ÇÒÁÅÖ¡(«Á.) |
¤Ó͸ԺÒªÑé¹´Ô¹ |
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Ap
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0-12
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Dark red (2.5YR3/6 dry), dark reddish brown (2.5YR3/4 moist) silty clay; moderate fine subangular blocky breaking to fine granular structure; slightly hard; friable, sticky, plastic; many fine roots; slightly acid (field pH 6.5); clear, smooth boundary. |
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Bt1
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12-53
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Dark red (2.5YR3/6 dry), dusky red (10 R 3/4 moist) clay; moderate medium subangular blocky structure; hard, friable, sticky, plastic; broken moderately thick cutan on ped faces; common fine roots; very strongly acid (field pH 4.5); diffuse, smooth boundary. |
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Bt2
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53-137
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Dark red (2.5YR3/6 dry), dusky red (10 R 3/4 moist) clay; moderate medium subangular blocky structure; hard, friable, sticky, plastic; patchy moderately thick cutan on ped faces; common fine roots; very strongly acid (field pH 4.5); diffuse, smooth boundary. |
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Bt3
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137-200
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Dark red (10R3/6) clay; weak fine subangular blocky structure; friable, sticky, plastic; patchy thin cutan on ped faces; few fine roots; very strongly acid (field pH 4.5). |
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