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建筑弃土与污泥堆肥混合配制营养土对园林植物的影响

Keywords: 建筑弃土,污泥堆肥,营养土,重金属,园林植物

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Abstract:

使用建筑弃土与污泥堆肥配制营养土并应用于园林绿化。以凤仙花为研究对象,通过盆栽实验观察和对比分析了凤仙花从播种到开花整个生命过程的生长指标,并对其结果进行模糊评价。结果表明,凤仙花播种期和生长期各生长指标随着营养土中堆肥含量的增加而增加,并在堆肥施用量30%时达到最佳;营养土中的重金属对凤仙花的生长速度有抑制效应,主要集中在播种期和生长期初期,随着凤仙花的生长成熟,重金属的胁迫效应持续减少,并在成熟期显著降低,重金属对凤仙花地表部分的抑制更为明显;建筑弃土与污泥堆肥配制的营养土对园林植物营养效果良好,成熟期的凤仙花生物量大幅度增加,最大增幅550%;通过模糊评价并综合考虑配置方案,最佳堆肥施用量为30%。

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