[1]FU Yujuan,ZHU Chenmengyuan,ZHANG Xudong,et al.Rainfall Infiltration Characteristics of Farmland Underlying Surfaces Treated with Different Practices[J].Research of Soil and Water Conservation,2019,26(04):74-79.
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Rainfall Infiltration Characteristics of Farmland Underlying Surfaces Treated with Different Practices
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 04
Page number:
74-79
Column:
Public date:
2019-06-11
- Title:
- Rainfall Infiltration Characteristics of Farmland Underlying Surfaces Treated with Different Practices
- Keywords:
- ridging and mulching; rainfall redistribution process; infiltration volume; infiltration depth
- CLC:
- S275.3;S152.7
- DOI:
- -
- Abstract:
- In order to analyze the influence of ridge and film mulching on the process of rainfall infiltration, field trials of four underlying surface treatments including the open bare land (PL), leveling ground (PZ), ridge without mulching (QL) and ridge with mulching (ML) were carried out in Kailu County, Tongliao City, Inner Mongolia. The changes of soil moisture contents of different treatments before and after 5 rainfall events in maize growth period and the effects of underlying surface treatment on rainfall infiltration redistribution process were analyzed. The results showed that: (1) the influence of ridge and film on the rainfall infiltration process of farmland was directly related to the amount of rainfall; when the rainfall was small, the influence of furrow and film on the infiltration process of rainfall was not obvious; when the rainfall reached 18 mm or more, the effect of rainwater infiltration increased in the ditch, and the infiltration volumes and infiltration depths increased significantly; when the rainfall reached about 33 mm, the infiltration rainfall decreased due to the types of rainfall; (2) the treatments had different effects on rainfall infiltration; QL treatment could increase infiltration volume and infiltration depth due to the accumulation of rainwater in furrows; the mid-channel profile could increase the infiltration rate up to 76% compared with PZ treatment; the film of ML treatment weakened the rainwater collecting effect of the furrow, which could increase the infiltration amount up to 39% compared with the PZ treatment; however, the amount of water retained in the surface soil was relatively reduced, and more rainwater migrated downward due to the impervious effect of the membrane under ML treatment, which increased the infiltration depth of the rainfall and increased the infiltration depth by about 30 cm compared to the PZ treatment.
- References:
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1900-01-01