|
Résumé :
|
Four aspects of water management are important when dealing with the use of poor quality water for irrigation: (1) selection of appropriately salt tolerant crops and control of soil salinity through leaching; (2) maintenance of soil physical properties to assure soil tilth and adequate soil permeability to meet crop water and leaching requirements; (3) improvements in water management, and in some cases, the adoption of advanced irrigation technology; and (4) acceptable disposal methods for either the drainage water, or the salt it contains. This review covers research, the application of available computer models to water, salt, and soil management, and farmer experiences in these areas. The focus of the paper is on technologies, developed by researchers and farmers, that facilitate the use of poor quality irrigation waters while at the same time minimizing adverse impacts on crop yields and soil physical properties of irrigated lands, and on-site environmental impact.
|
