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本文在田间条件下,利用3.2g/L微咸水和淡水对河北省东南部盐渍化地区冬小麦进行灌溉试验,对其生长过程中叶面积发展动态、地上部干物质累积规律及其在不同器官中的分配状况和土壤效应等方面进行了研究。研究表明利用微咸水进行灌溉对冬小麦的生长有一定的抑制作用,地上部干物质累积量只有淡水灌溉处理的75%左右,但对其最后的经济产量影响不大,相应的提高了收获指数。微咸水灌溉增加土壤表层盐分,对小麦生长略有影响,如合理利用,可充分发挥此地区地下浅层微咸水资源的生产潜力,缓解该地区的水资源紧张,促进农业发展;但微咸水灌溉的长期土壤环境效应需进一步研究。
Under the field conditions, the irrigation experiments were conducted on brackish water of salinity in southeastern Hebei Province using 3.2 g / L brackish water and freshwater. The development of leaf area during the growth process, Organ distribution and soil effects and other aspects of the study. The results showed that the irrigation with brackish water had a certain inhibitory effect on the growth of winter wheat, and the dry matter accumulation in aboveground part was only about 75% of the freshwater irrigation treatment, but it had little effect on the final economic yield, correspondingly, the harvest index . Brackish water irrigation to increase soil surface salinity has a slight impact on wheat growth, such as rational use, can give full play to the potential of shallow brackish water resources in the ground to ease the water resources in the region to promote agricultural development; However, micro Long-term soil environmental effects of salt water irrigation need further study.