| Spatial distribution and accumulation pattern of soil salinity with long term drip irrigation under plastic mulching |
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| DOI：10.7606/j.issn.1000-7601.2009.06.43 |
| Key Words: drip irrigation under plastic mulching soil salt movement and accumulation Xinjiang |
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| Abstract: |
| Soil salinity distribution and accumulation pattern of different soil texture and plantation age with long term drip irrigation under plastic mulching in Xinjiang were studied by using a polynomial approximate simulation.The total salinity showed parabola distribution and reached the highest value at 40～60 cm in loam soil,while it showed logistic distribution and reached the highest value at 60～80 cm in clay.The total salinity decreased with increasing plantation age in surface soil,but increased with increasing plantation age at the deeper layer and reached its highest value at the depth of 40～60 cm.This indicated that drainage irrigation technology should be combined with drip irrigation under plastic film mulching to avoid soil degradation by salinization. |