【摘要】 开发劣质水用于农业灌溉有利于缓解当今日益严重的用水矛盾。为探讨咸水灌溉在我国的适宜性和安全性,概述了国内咸水灌溉对作物和环境的影响以及改善措施研究成果。分析表明:通过控制灌溉水矿化度、制定合理的灌溉制度、采用地下滴灌以及覆盖处理等措施,咸水灌溉可以保证作物稳产、水肥高效利用以及提高产品品质,能够维持土壤水盐动态平衡、避免土壤理化性质恶化;适当抽取地下咸水不会明显降低地下水位,而且有助于改善地下水水质。因此,咸水灌溉在我国有非常广阔的发展前景。更多还原

【Abstract】 Development of poor quality water in agricultural irrigation is beneficial to relieve the increasingly serious water contradiction.To understand the suitability and safety of saline water irrigation in China,the effects of saline water irrigation on crops and the environment and the improvement measures are summarized in this paper.The analysis indicates that by controlling irrigation water salinity,formulating reasonable irrigation system and using the measures of underground drip irrigation and covering processing,saline water irrigation can ensure stable crop production,efficient use of water and the improvement of the product quality.It also can maintain the soil water-salt dynamic balance and avoid the deterioration of soil physical and chemical properties.The research also shows that appropriate extraction underground saline water will not significantly reduce the underground water level,while will help to improve the groundwater quality.Therefore,saline water irrigation has wide development space in China.更多还原