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ª×èͪÑé¹´Ô¹ |
¤ÇÒÁÅÖ¡(«Á.) |
¤Ó͸ԺÒªÑé¹´Ô¹ |
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A
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0-28
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Reddish brown (5YR4/4) clay; moderate fine and medium subangular blocky structure; extremely hard, extremely firm, sticky and plastic; few fine interstitial and tubular pores; common fine, common medium and few coarse roots; moderately alkaline (field pH 8.0); gradual smooth boundary. |
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Bt
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28-68
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Red (2.5YR4/6) clay; moderate medium to coarse subangular blocky structure breaking into strong fine subangular blocky structure; friable, sticky and plastic; thin broken clay coating on ped faces and in pores; few to common fine interstitial and few fine tubular pores; few fine and common medium roots; moderately alkaline (field pH 8.0); clear smooth boundary. |
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Cr
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68-90+
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Mixed light yellowish brown (10YR6/4) yellowish red (5YR4/6) and yellowish brown (10YR5/8) clay and weathering phyllite fragments; moderate medium subangular blocky; friable, sticky and slightly plastic; common fine interstitial pores; strongly acid (field pH 5.5). |
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