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  中新网三明10月21日电 (刘清香 熊明欢)近日,在福建省三明市泰宁县朱口镇朱口村小娘塅烘烤房内,金黄的稻谷堆得满满当当。“今年收成特别好,结实率高,平均亩产达600余公斤。”水稻种植大户沈显林笑着说。

泰宁县朱口镇。朱口镇政府供图

  当前,泉(州)(三)明山海协作正在深入展开。今年7月底,泰宁县农业农村局联合朱口镇为沈显林的百亩稻田撒下从惠安县引入的牡蛎壳土壤调理剂,成功改良了原本偏酸性的土壤,实现了增产增质。

  水稻生长对土壤环境要求偏碱性,而泰宁县大部分耕地属于酸性土壤,pH值长期在4.5-5.5之间,酸化导致肥料利用率低、作物病害频发,直接影响了水稻的生长,制约水稻产量与质量的提升。

  为破解相关难题,2024年底,作为对口帮扶单位,惠安县向泰宁县无偿援助了150吨牡蛎壳土壤调理剂。这些调理剂,是“牡蛎养殖—废壳利用—土壤改良”绿色循环模式的成果。

  曾经堆积在惠安渔港的废弃牡蛎壳,经过去除杂质、保护性焙烧、分段煅烧、粉碎等多道工艺,被转化成改良土壤的“宝贝”,在朱口镇600亩示范基地发挥了关键作用。

  今年9月底检测显示,试验田土壤pH值已从5.11显著提升至6.05。随着土壤条件的改善,水稻亩产较往年提高了约50公斤,增幅达13.85%。

  朱口镇农技站负责人童永春介绍,牡蛎壳调理剂中丰富的钙元素有效中和了土壤酸性,并为水稻生长提供了多种微量元素,创造出更稳定的生长环境。同时,农科院专家的测土配方施肥技术指导,让养分供应更加精准全面。

  更令人惊喜的是,土壤改良还带来了可观的碳汇潜力,相关核算工作正在进行,为未来探索“土壤改良碳汇交易”新模式奠定了基础。

  从惠安渔港的废弃蛎壳,到泰宁山间的金色稻浪,这场跨越200公里的技术协作,不仅破解了山区土壤酸化难题,也疏通了沿海固废处理的堵点,为山海协作提供了“技术输出+生态共赢”的范本,让更多山区的特色农业产业从中受益,焕发新生机。(完)

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