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甲鱼养殖废水在土壤-植物生态工程系统的处理与利用

Keywords: 甲鱼养殖废水,土壤-植物系统,生态工程,散叶莴苣

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Abstract:

以甲鱼养殖温室排放的富含营养物的养殖废水和利用废水栽培蔬菜的生态工程生产系统为研究对象,和商品营养液对比,在4种不同土壤上开展了浇灌甲鱼养殖废水栽培散叶莴苣(生菜)的研究。120d的实验结果表明,用甲鱼废水和营养液分别处理4种土壤的生菜产量差异不显著,但生产上要用甲鱼废水完全替代营养液作为肥料用于土壤栽培,还需对甲鱼废水进行预处理;潮土对甲鱼养殖废水有较大的适应性;甲鱼养殖废水的主要营养元素组成与植物需要相比,P元素和K元素还比较缺乏。用甲鱼类废水处理的4种土壤生菜的含Ca量均大于用营养液处理的4种土壤。

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