Comparison of Land, Water, and Energy Requirements of Lettuce Grown Using Hydroponic vs. Conventional Agricultural Methods.
Comparison of Land, Water, and Energy Requirements of Lettuce Grown Using Hydroponic vs. Conventional Agricultural Methods.
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DOI：
10.3390/ijerph120606879
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发表时间：
2015-06-16
影响因子：
--
通讯作者：
Halden RU
中科院分区：
文献类型：
--
作者：
Barbosa GL;Gadelha FD;Kublik N;Proctor A;Reichelm L;Weissinger E;Wohlleb GM;Halden RU
以美国亚利桑那州尤马市的生菜生产为例，比较了水培和常规农业对土地、水和能量的需求。数据来自作物预算和政府农业统计数据，并与水培生菜生产的理论数据进行了对比，该理论数据是使用带有文献值的工程方程得出的。单位面积(815m2)生菜产量为41±6.1 kg/m2/a，需水和需能分别为20±3.8 L/kg/y和90,000±11,000 kJ/kg/y(±标准差)。与之相比，常规生产年产量为3.9±0.21 kg/m~2，需水250±25kJ/kg/年，需能1100±75kJ/kg/年。水培生菜的产量是常规生菜的11±1.7倍，但所需能量是常规生菜的82±11倍。据作者所知，这是第一次以美国西南部种植的生菜为例，对常规和水培生产进行定量比较。它确定能源供应是评估水培可持续发展的一个主要因素，并指出提供丰富可再生能源(如太阳能、地热或风能)的缺水环境对水培农业特别有吸引力。
The land, water, and energy requirements of hydroponics were compared to those of conventional agriculture by example of lettuce production in Yuma, Arizona, USA. Data were obtained from crop budgets and governmental agricultural statistics, and contrasted with theoretical data for hydroponic lettuce production derived by using engineering equations populated with literature values. Yields of lettuce per greenhouse unit (815 m2) of 41 ± 6.1 kg/m2/y had water and energy demands of 20 ± 3.8 L/kg/y and 90,000 ± 11,000 kJ/kg/y (±standard deviation), respectively. In comparison, conventional production yielded 3.9 ± 0.21 kg/m2/y of produce, with water and energy demands of 250 ± 25 L/kg/y and 1100 ± 75 kJ/kg/y, respectively. Hydroponics offered 11 ± 1.7 times higher yields but required 82 ± 11 times more energy compared to conventionally produced lettuce. To the authors’ knowledge, this is the first quantitative comparison of conventional and hydroponic produce production by example of lettuce grown in the southwestern United States. It identified energy availability as a major factor in assessing the sustainability of hydroponics, and it points to water-scarce settings offering an abundance of renewable energy (e.g., from solar, geothermal, or wind power) as particularly attractive regions for hydroponic agriculture.
DOI：
10.1080/14620316.2012.11512890
发表时间：
2012-09-01
影响因子：
1.9
作者：
Zhou, W. L.;Liu, W. K.;Yang, Q. C.
通讯作者：
Yang, Q. C.
DOI：
10.1590/s0103-84782008000300036
发表时间：
2008-06-01
期刊：
Ciência Rural
影响因子：
--
作者：
Luz, Gean Lopes da;Medeiros, Sandro Luís Petter;Morais, Katiule Pereira
通讯作者：
Morais, Katiule Pereira
影响因子：
1.9
作者：
Martineau, Vincent;Lefsrud, Mark;Kopsell, Dean A.
通讯作者：
Kopsell, Dean A.