[1]YI Peng-fei,WU Zheng-guang,WANG Yi-min,et al.Research on Soil Salt Accumulation Influence by the Years of Covered Cotton under Drip Irrigation[J].Research of Soil and Water Conservation,2010,17(05):118-122.
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Research on Soil Salt Accumulation Influence by the Years of Covered Cotton under Drip Irrigation
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 05
Page number:
118-122
Column:
Public date:
2010-10-20
- Title:
- Research on Soil Salt Accumulation Influence by the Years of Covered Cotton under Drip Irrigation
- Keywords:
- cotton field; drip irrigation under the mulching; soil salinity; growth period; different years; accumulation
- CLC:
- S156.41
- DOI:
- -
- Abstract:
- A field investigation was conducted to study the effect of mulch drip irrigation years on the characteristics of the soil salinity accumulation. The results showed that the salt content was significantly increased in 60-80 cm layers compared to other layers at the vertical direction, and the back up of the salt was easily observed in the 0-5 cm layers after irrigation. Further, a positive relationship was presented between the salt content and the distance from the dripper. The study also revealed that the soil salinity varied evidently together with water, namely that ‘salt moving with water’. In the growth period, an obvious difference was found between inside film and outside film, and the 0-20 cm layer salt was accumulated significantly at the end of growth period. In general, the longer the drip irrigation last, the easier the accumulated layer of salt moved to the up earth before irrigation, and the soil salinity showed extremely significant difference in soil layers at the boll opening stage, salt content of upper and lower section were large, while the central section was small. The salt was significant difference between 6～7 years distances of cotton field. The result of this study suggested that long term drip irrigation system might lead an increasing tendency of the soil salinity.
- References:
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