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ª×èͪÑé¹´Ô¹ |
¤ÇÒÁÅÖ¡(«Á.) |
¤Ó͸ԺÒªÑé¹´Ô¹ |
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A
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0-7/11
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Dark reddish brown (2.5YR3/4) clay; moderate coarse subangular blocky and moderate fine and medium granular structure; slightly firm, sticky, plastic; common very fine and fine interstitial and common fine tubular pores; many very fine and fine roots; few fine and medium animal holes; common soft charcoal pieces; medium acid (field pH 6.0); clear, wavy boundary. |
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Bt1
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7/11-34
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Dark red (10R3/6) clay; moderate coarse subangular blocky structure; friable, sticky, plastic; patchy thin and in places moderately thick clay coating on ped faces; common very fine and few interstitial and tubular pores; common very fine and few fine roots; few fine animal holes; very strongly acid (field pH 5.0); gradual, smooth boundary. |
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Bt2
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34-80
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Dark red (10R3/6) clay; weak coarse subangular blocky breaking to moderate medium and fine subangular blocky structure; friable, slightly sticky, slightly plastic; patchy thin and in places moderately thick clay coating on ped faces; common very fine and fine interstitial and tubular pores; very strongly acid (field pH 5.0); gradual, smooth boundary. |
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Bt3
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80-150+
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Dark red (10R3/6) clay; weak coarse subangular blocky breaking to moderate fine and medium subangular blocky structure; friable, slightly sticky, slightly plastic; patchy moderately thick clay coating on ped faces; common very fine and fine interstitial and many fine tubular pores; few very fine roots; common soft basalt fragments; very strongly acid (field pH 5.0). |
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