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首页> 外文期刊>HortScience >Nutrient recovery by seven aquatic garden plants in a laboratory-scale subsurface-constructed wetland.
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Nutrient recovery by seven aquatic garden plants in a laboratory-scale subsurface-constructed wetland.

机译：实验室规模的地下人工湿地中的七种水生园林植物对营养物的恢复。

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摘要

Commercial nurseries use large amounts of water and nutrients to produce container-grown plants. The large volume of runoff containing nitrogen (N) and phosphorus (P) that leaves nurseries can contaminate surface and groundwater. Subsurface flow-constructed wetlands have been shown to effectively treat agricultural, industrial, and residential wastewater and to be well-suited for growers with limited production space. We investigated the possibility of using commercially available aquatic garden plants in subsurface-constructed wetlands to remove nutrients in a laboratory scale, gravel-based system. Seven popular aquatic garden plants received N and P from Hoagland's nutrient solution every 2 days for 8 weeks. These rates (0.39 to 36.81 mg.L-1 of N and 0.07 to 6.77 mg.L-1 P, respectively) encompassed low to high rates of nutrients found at various points between the discharge and inflow points of other constructed wetland systems currently in use at commercial nurseries. Plant biomass, nutrient recovery, and tissue nutrient concentration and content were measured. Whole plant dry weight positively correlated with total N and P supplied. Louisiana Iris hybrid 'Full Eclipse', Canna x generalis Bailey (pro sp.) 'Bengal Tiger', Canna x generalis Bailey (pro sp.) 'Yellow King Humbert', Colocasia esculenta (L.) Schott 'Illustris', Peltandra virginica (L.) Schott, and Pontederia cordata L. 'Singapore Pink' had the greatest N recovery rates. The P recovery rates were similar for the cannas, Colocasia esculenta 'Illustris', Louisiana Iris 'Full Eclipse', Pe. virginica, and Po. cordata 'Singapore Pink'. The potential exists for creating a sustainable nursery and greenhouse production system that incorporates a subsurface-constructed wetland planted with marketable horticultural crops that provide remediation and revenue.
机译：商业苗圃使用大量的水和养分来生产容器生长的植物。离开苗圃的大量径流含有氮（N）和磷（P），会污染地表和地下水。地下流动构建的湿地已被证明可以有效处理农业，工业和住宅废水，并且非常适合生产空间有限的种植者。我们研究了在地下构造的湿地中使用市售水生园林植物以实验室规模，基于砾石的系统去除养分的可能性。 7种流行的水生园林植物每2天从Hoagland的营养液中接受N和P，持续8周。这些比率（分别为0.39至36.81 mg.L-1的氮和0.07至6.77 mg.L-1的P）涵盖了从目前在其他人工湿地系统的出水点和流入点之间的各个点发现的低到高养分比率。在商业苗圃中使用。测量了植物生物量，养分回收率以及组织养分浓度和含量。全株干重与总氮和磷呈正相关。路易斯安那州鸢尾花杂交种'Full Eclipse'，Canna x generalis Bailey（pro sp。）'Bengal Tiger'，Canna x generalis Bailey（pro sp。）'Yellow King Humbert'，Colocasia esculenta（L.）Schott'Illustris'，Peltandra virginica （L.）Schott和Pontederia cordata L.'Singapore Pink'的N回收率最高。大麻，Colocasia esculenta'Illustris'，路易斯安那州Iris'Full Eclipse'，Pe的P回收率相似。弗吉尼亚州和波。 cordata'新加坡粉红色'。存在创建可持续的苗圃和温室生产系统的潜力，该系统将地下构造的湿地与可销售的园艺作物种植在一起，以提供补救和收益。

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