ZHONG Yi-jun, WU Lin, HUANG Qian-ru, et al. Effect of Ramie on Soil Aggregate and Its Characteristics in Red Soil Region of South China[J]. Bulletin of Soiland Water Conservation, 2014, 33(2): 78-82.
DOI:
ZHONG Yi-jun, WU Lin, HUANG Qian-ru, et al. Effect of Ramie on Soil Aggregate and Its Characteristics in Red Soil Region of South China[J]. Bulletin of Soiland Water Conservation, 2014, 33(2): 78-82. DOI: 10.13961/j.cnki.stbctb.2014.02.017.
Effect of Ramie on Soil Aggregate and Its Characteristics in Red Soil Region of South China
The effect of soil physical and chemical properties
soil aggregate and its characteristics of planting ramie and peanuts in red soil were studied by dry
wet sieving method. Moreover
the relationship between soil aggregates and surface runoff and soil erosion were also analyzed. The results indicated that: (1) After three years by planting ramie
soil organic matter
field capacity
total porosity
grains of sand were increased 28.44%
10.06%
5.65%
28.44%
soil bulk density
silt
and clay were reduced by 7.20%
14.85%
34.95%(p<0.05); (2) Mean weight diameter(MWD)
stability index(ASI) of soil aggregate by planting ramie were significantly higher than that of planting peanut
soil aggregate stability of planting ramie was better than that of peanuts; (3) 0.25~1 mm aggregates is the best chance of preservation of the red soil
and the resist-erosion ability also the strongest. (4) Surface runoff and soil erosion
with soil organic matter
sand content
>1 mm dry aggregates
>0.5 mm water stable aggregates
MWD
ASI were negatively correlated(p<0.01)
but were significantly positively correlated with silt
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