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ª×èͪÑé¹´Ô¹ |
¤ÇÒÁÅÖ¡(«Á.) |
¤Ó͸ԺÒªÑé¹´Ô¹ |
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A
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0-12
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Dark brown (7.5YR3/4) sandy loam; moderate fine and medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; many very fine roots; common charcoal pieces; medium acid (field pH 6.0); abrupt, smooth boundary. |
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BA
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12-19
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Reddish brown (2.5YR4/4) sandy clay loam; weak fine and medium sub angular blocky structure; very hard, firm, sticky, slightly plastic; patchy thin clay coatings on ped faces and in pores; common very fine and few medium roots; common rounded ironstone nodules and common fine Fe/Mn nodules; very strongly acid (field pH 4.5); clear, smooth boundary. |
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Bt1
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19-40
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Dark reddish brown (2.5YR3/4) clay; moderate coarse prismatic breaking to moderate medium and coarse subangular blocky structure; hard, friable, sticky, plastic; broken moderately thick clay coatings on ped faces and in pores; common very fine and medium roots; common rounded iron stone nodules and fine Fe/Mn nodules and 4.5 cm termite hole; very strongly acid (field pH 4.5); clear, smooth boundary. |
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Bt2
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40-100
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Dark red (2.5YR3/6) clay; strong medium and coarse subangular blocky structure; hard, friable, sticky, plastic; broken moderately thick clay coatings on ped faces and in pores; common very fine, few fine and medium roots; common fine Fe/Mn nodules; very strongly acid (field pH 4.5); diffuse, smooth boundary. |
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Bt3
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100-145
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Dark red (2.5YR3/6) clay; strong medium and coarse subangular blocky structure; hard, friable, sticky, plastic; broken moderately thick clay coatings on ped faces and in pores; few very fine and fine roots; common fine Fe/Mn nodules; very strongly acid (field pH 4.5); gradual, smooth boundary. |
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Bt4
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145-200
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Dark red (2.5YR3/6) clay with discernable sand fraction; strong coarse and very coarse subangular blocky structure; very hard, firm, sticky, plastic; continuous moderately thick clay coatings on ped faces and in pores; few fine roots; common fine Fe/Mn nodules; very strongly acid (field pH 4.5). |
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