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ª×èͪÑé¹´Ô¹ |
¤ÇÒÁÅÖ¡(«Á.) |
¤Ó͸ԺÒªÑé¹´Ô¹ |
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Ap
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0-30
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Dark reddish brown (5YR 3/4) clay with a discernable fine sand fraction composed of angular or subangular quartz grains; moderate coarse subangular blocky breaking to moderate medium subangular blocky structure; hard, firm, slightly sticky, plastic; common fine and medium roots concentrate in lower part of the horizon: considerable termite activity; medium acid (field pH 6.0); clear, smooth boundary. |
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Bt2
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60-210+
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Red (2.5YR 4/6) clay with scattered medium subangular quartz grains; moderate medium subangular blocky breaking into moderate fine subangular blocky structure; friable sticky plastic; broken moderate thick cutans on ped faces and in pores; few fine roots; medium acid (field pH 6.0). |
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Bt1
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30-60
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Dark reddish brown (2.5YR 3/4) clay with some discernable fine subangular quartz grains: moderate coarse subangular blocky breaking to moderate fine to medium subangular blocky structure; hard, slightly friable, slightly sticky, slightly plastic; broken moderately thick cutans on ped faces and in pores; common fine and few medium root; medium acid (field pH 6.0); gradual, smooth boundary. |
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