ѵԢͧشԹѴ


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ͪشԹ  :  ҹ  Nan (Na)
 
 
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Apg
0-16
Very pale brown (10YR7/3) dry, brown (7.5YR5/2) moist, silty clay; many fine distinct strong brown (7.5YR5/6) mottles along roots; very weak coarse angular and subangular blocky structure; very hard, very firm, very sticky, plastic; common fine roots; very strongly acid (field pH 5.0) clear, smooth boundary.
Btg1
16-37
Pinkish gray (7.5YR6/2) dry, reddish gray (5YR5/2) moist, silty clay; many fine distinct dark brown (7.5YR4/4) mottles; weak fine and medium subangular blocky structure; very hard, very firm, very sticky, very plastic; continuous moderately thick cutans in pores, broken moderately thick on ped faces; few very fine roots; medium acid (field pH 6.0) gradual, smooth boundary.
Btg2
37-63
Brown (7.5YR5/2) dry, pinkish gray (5YR6/2) moist, silty clay; many fine distinct reddish brown (5YR4/4) mottles; moderately weak coarse angular and subangular breaking to moderate fine and medium angular and subangular blocky structure; very hard, very firm, very sticky, plastic; continuous thick cutans in pores and on ped faces show silt coating; few small rounded slightly hard Mn-nodules; very few very fine roots; slightly acid (field pH 6.5) gradual, smooth boundary.
Btg3
63-110+
Reddish gray (5YR5/2) moist, silty clay; many medium distinct dark brown (7.5YR4/4) mottles; moderately weak coarse and medium subangular blocky structure; firm, very sticky, very plastic; continuous thick cutans in pores and on ped faces; few small slightly hard Mn-nodules; very few very fine roots; neutral (field pH 7.0).