[1]LIU Chunfen,LIU Wenzhao,LIN Wen,et al.Soil Hydrothermal Status Under Different Degrees of Film Mulching Coverage on the Loess Tableland[J].Research of Soil and Water Conservation,2017,24(06):62-67.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 06
Page number:
62-67
Column:
Public date:
2017-11-24
- Title:
-
Soil Hydrothermal Status Under Different Degrees of Film Mulching Coverage on the Loess Tableland
- Author(s):
-
LIU Chunfen1, LIU Wenzhao1,2, LIN Wen2, HAN Xiaoyang2, LI Chao3
-
1. College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, Shaanxi 712100, China;
3. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
-
- Keywords:
-
loess tableland; film; different degrees of coverage; soil moisture; soil temperature
- CLC:
-
S316
- DOI:
-
-
- Abstract:
-
In order to further optimize film planting patterns and understand crop production mechanisms, responsive characteristics of soil hydrothermal status to different degrees of film mulching coverage (30%, 50%, 70%, 85%, 100%, and CK or 0%) were studied under the condition of dry farmland furrows with no crops on the loess tableland. The results showed that:(1) the water conservation effects (Y, the increment of soil water storage from April to September) were correlated with film coverage (X), the fitted equation was expressed as Y=1.65X+42.60, with a correlation coefficient of R=0.98; the greater film coverage was, the more validness of precipitation accumulation in 5 m soil profile was, the depth of rainfall infiltration under the film mulching condition was 3 m below the soil surface; (2) soil temperature increased with the increment of film coverage, which was good for crop emergence in low temperature season; soil temperature for the 85% mulching was almost the same as the whole-film mulching, ground temperature reached a maximum faster, with a higher peak value from the 30% of film mulching to 85%; (3) the 85% of film-covering was best pattern in terms of soil hydrothermal status under film mulching cultivation and economic benefits in farmland.