【摘要】 为了预防盐碱土壤面积进一步扩大，通过在土壤根生区以下铺设聚丙烯材料作为土壤毛细屏障，通过阻断土壤水盐运移的途径防止土壤盐碱化。研究结果表明：聚丙烯非织造布与其他聚丙烯材料相比能够更有效阻隔土壤水盐的运动，避免根生区土壤盐碱化；在试验周期内，铺设聚丙烯非织造布土柱上层土壤电导率为0.61 mS/cm，与对照组表层土壤电导率31.8 mS/cm差距较大，聚丙烯扁平丝材料作为阻隔材料时上层土壤电导率与对照组相似。这说明聚丙烯无纺布能有效阻断土壤盐水的转移，从而防止土壤盐碱化的发生，对土壤盐碱化的预防具有潜在应用价值。更多还原

【Abstract】 In order to prevent the further expansion of saline-alkali soil area, polypropylene material was laid below the soil root zone as soil capillary barrier to prevent soil salinization by blocking the transport of soil water and salt. The results showed that compared with other polypropylene materials, polypropylene nonwovens could effectively block the movement of soil water and salt, and avoid soil salinization in the root zone. During the test period, the electrical conductivity of the upper layer of the polypropylene nonwoven soil column was 0.61 m S/cm, significantly different from that of the control group, which was 31.8 m S/cm. When the polypropylene flat wire material was used as the barrier material, the electrical conductivity of the upper layer of the soil was similar to the control group. Polypropylene nonwoven fabric can effectively block the transfer of soil salt water and prevent the occurrence of soil salinization, which has potential application value in the prevention of soil salinization.更多还原