ª×èͪÑé¹´Ô¹ |
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Apg
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0-10
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Very dark gray (10YR3/1) clay; common fine discinct strong brown and prominent reddish yellow mottles in very fine root channels; moderate coarse subangular blocky structure; hard, firm; many fine and very fine roots; slightly acid (field pH 6.5); clear, smooth boundary. |
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Ag
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10-20
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Black (10YR2/1) clay; common fine prominent strong brown and reddish yellow mottles in very fine root channels; massive to weak coarse subangular blocky structure; firm, hard; common very fine roots; neutral (field pH 7.0); abrupt, slightly wavy boundary. |
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2Eg
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20-34/40
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Light gray to gray (10YR6/1) fine sandy clay loam; very few fine diffuse light olive brown mottles mainly in upper 2 cm of the horizon; weak prismatic; very friable; few thick dark gray and black humus clay coatings on vertical ped faces; black humus clay coatings in vertical pores; few very fine roots; mildly alkaline (field pH 7.5) gradual, wavy boundary. |
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2Bg1
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34/40-70
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Light gray to gray (5Y6/1) fine sandy loam; many coarse discinct yellowish brown, strong brown and light olive brown mottles; weak prismatic breaking to coarse subangular blocky structure; friable, slightly sticky; thick black humus clay coatings in vertical pores and on few vertical ped faces; few manganese nodules; few very fine roots; mildly alkaline (field pH 7.5) gradual, wavy boundary. |
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2Bg2
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70-140
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Light gray to gray (5Y6/1) fine sandy loam; common medium diffuse light olive brown mottles, few green and olive brown mottles; weak prismatic breaking to subangular blocky structure; friable, slightly sticky; black humus clay coatings in pores; many fine vertical and very fine tubular pores; very few soft manganese nodules; mildly alkaline (field pH 7.5). |
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2BCg
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140-180
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Greenish gray (5GY5/1) half ripe clay; few green and olive mottles; some of which are slightly hard; moderately alkaline (field pH 8.0). |
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2Cg
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180-250
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Dark greenish gray (5GY4/1) fine sandy loam; very few green mottles; many shell fragments; moderately alkaline (field pH 8.0). |
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