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引黄淤灌是一个规模大、投资少简而易行的改良盐渍土的方法,也是迅速提高低产土壤单位面积产量的有效措施。现根据山东寿张县淤灌的一些资料整理报告如下。 一、淤灌的作用 (一)冲洗土壤盐分 淤灌可以排除盐分,如在有排水排盐系统地区,淤灌就更易达到这个要求。据计算,伏季淤灌每亩要求平均落淤5厘米,需要淤灌的总水量相应为1100—1500公方。这样大的定额,超出了冲洗重盐土所需要定额的4—5倍。虽然一个伏季不能达到上述要求,但
Yellow siltation is a large scale, less investment and easy to improve the method of saline soil, but also an effective measure to rapidly increase the yield per unit area of low yield soil. According to Shandong Shouzhang some information silting the report below. First, the role of silting (A) flushing soil salt irrigation can rule out salt, such as in drainage drainage system area, silting more easily reach this requirement. It is calculated that the average daily sediment deposition per acre required silt 5 cm, the total amount of water required for siltation corresponding 1100-1500 square. Such a large quota, beyond the fixed amount of irrigation salt required 4-5 times. Although one volt can not meet the above requirements,