[1]DENG Chao,LI Yongmei,FAN Maopan,et al.Effects of Different Planting Patterns of Soybean on Soil Aggregates and Soil Consolidation Ability[J].Research of Soil and Water Conservation,2020,27(02):77-83.
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Effects of Different Planting Patterns of Soybean on Soil Aggregates and Soil Consolidation Ability
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 02
Page number:
77-83
Column:
Public date:
2020-03-30
- Title:
- Effects of Different Planting Patterns of Soybean on Soil Aggregates and Soil Consolidation Ability
- CLC:
- S152.4; S157.3+9
- DOI:
- -
- Abstract:
- To study the effects of different planting patterns of soybean on soil aggregates and soil consolidation ability in the red soil sloping land, the soybean monoculture and soybean-maize intercropping were taken as the planting patterns. The characteristics of soil moisture content, soil aggregates, soybean root system and soil consolidation ability were investigated in two cropping patterns. The results showed that in the maturity period of soybean, soil moisture content in intercropping pattern was 0.32% higher than that of monoculture on the slope with 10°, soil moisture content in intercropping pattern was 4.06% higher than that of monoculture on slope with 20°, and 3.81% lower than that of monoculture on 30° slope; compared with those in monoculture, >0.25 mm stable aggregates of intercropping pattern increased by 6.61%, 2.63% on slopes with 10° and 30°, respectively, and decreased by 4.46% on slope with 20°, mean weight diameter of intercropping pattern increased by 32.84% and 9.09% on the slopes with 10° and 30°, respectively, decreased by 89.87% on slope with 20°, and the fractal dimensions of intercropping pattern increased by 2.85% and 3% on the slopes with 10° and 20°, respectively, and there was no difference on the slope with 30°; the soil consolidation ability of intercropping on the slopes with 10° and 30° was higher than that of monocropping, but that of intercropping on the slope with 20° was lower than that of monocropping; the root characteristics of soybean intercropping had no significant difference with single cropping on slope with 10°; the fractal dimension of soil aggregates in soybean intercropping increased, and the soil consolidation ability of soybean intercropping was higher than that of single cropping; in sloping arable land with 20°, the root volume of soybean intercropping decreased significantly, and the soil consolidation ability of soybean intercropping was lower than that of single cropping; there was no significant difference or trend in root characteristics and fractal dimension of soybean planting patterns in sloping farmland with 30°, the effect on soil consolidation ability of fractal dimension of soybean intercropping was stronger than that of single cropping, and the soil consolidation ability of intercropping was higher than that of single cropping. In summary, soybean intercropping has the major effect on the soil consolidation capacity of root-soil complexes by root. At the same time, soybean intercropping can enhance the effect of fractal dimension of soil aggregates and increase the soil consolidation capacity of root-soil complexes in sloping farmland.
- References:
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Last Update:
2020-02-25