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随着国家对粮食安全问题的关注,滨海重度盐荒地的改良和利用再次引起了人们的重视。台田-浅池综合土地利用模式降盐效果显著,分析表明:黄骅淤泥质盐荒地筑造的台田相对脱盐效率达47%。台田作物生育期内2次海冰水灌溉土壤脱盐效率差异较大,总体排盐效果较好,其中7月份台田海冰水灌溉处理下,单位面积的0～120 cm层土体排盐2.70 kg,与盐荒地相比排盐6.16 kg,与台田无灌溉处理相比排盐3.76 kg,台田排盐贡献率PT明显大于海冰水灌溉排盐贡献率PTW。因此在滨海盐碱地区利用旱涝盐碱的台田调控作用,配合海冰水灌溉保障作物需水,可以构建安全的农业种植环境。此研究为滨海盐荒地台田-浅池利用、构建生态农业及海冰水资源安全利用提供参考。
With the state’s attention to the issue of food security, the improvement and utilization of heavy salt wasteland in the coastal area once again aroused people’s attention. The results show that the reduction of salt in Taitian-Shantou comprehensive land use pattern is significant, and the analysis shows that the relative desalination efficiency of Taida in the silt salt wasteland of Huanghua reaches 47%. The seawater desalination efficiency of the two sea ice water irrigation periods varied greatly during the crop growth period of Taita, and the overall salt removal efficiency was better. Under Taichita sea ice water irrigation, the salt discharge of 0-120 cm soil layer per unit area in July was 2.70 kg compared with saline wasteland, which is 6.16 kg compared with salt wasteland. Compared with non-irrigation in Taita, salt rejection was 3.76 kg. The contribution rate of salt draining in Taichuai was significantly larger than that of seawater ice irrigation. Therefore, in the coastal saline-alkali region, the use of droughts and salina-alkali control role of Taiwan, with sea ice water irrigation to ensure crop water, you can build a safe agricultural planting environment. This study provides references for the utilization of Taitian-Shallow pool in coastal salt wasteland, the construction of ecological agriculture and the safe utilization of sea ice water resources.