Effects of land use and irrigation practices on Ca, Mg, K, Na loads in rice-based agricultural systems
作者： V.D. Litskas , V.G. Aschonitis , E.H. Lekakis , V.Z. Antonopoulos
DOI: 10.1016/J.AGWAT.2013.10.003
关键词:
摘要: Abstract Irrigation planning and management is essential in order to preserve agricultural production without affecting the ecosystem functioning by inducing salinity problems. The objective of study assess mass balance major cations (Ca 2+ , Mg K + Na ) SAR EC w values during growing season (May–October) a lowland irrigated area. selected area (150 ha) contained fields with rice, maize, cotton fodder crops located Axios River delta, Thessaloniki plain, Greece. Monitoring was performed for two years (2006–2007) irrigation drainage network Higher concentrations higher were observed water compared water, due leaching evapo-concentration processes fields. Cations both seasons estimated it found negative region, plant uptake especially salt removal through approximately 50% efficiency. Cluster analysis used group sampling sites according their quality characteristics. According cluster results, rice cultivation primary influence on land Delta.
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