The seasonal influence of olive mill wastewater applications on an orchard soil under semi-arid conditions
The seasonal influence of olive mill wastewater applications on an orchard soil under semi-arid conditions
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半干旱条件下橄榄厂废水应用对果园土壤的季节性影响
DOI：
10.1002/jpln.201400658
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发表时间：
2015
影响因子：
2.5
通讯作者：
Gabriele Ellen
中科院分区：
文献类型：
--
作者：
Steinmetz;Zacharias;Markus Peter;Zipori;Schaumann;Gabriele Ellen
橄榄油生产产生大量的橄榄油厂废水（OMW）。OMW的营养成分较高，可作为肥料，但其脂肪和酚类成分会引起土壤的拒水性、植物毒性和酸化。适当的季节施用可减轻负面影响，同时保留有益效果。为了调查这一点，进行了一项实地研究，在冬季或夏季将OMW应用于以色列的一个橄榄园。土壤-水相互作用（水滴渗透时间、水力导电性）、土壤理化参数、酚类化合物和土壤生物活性（诱饵-薄片试验）在施用OMW 12至18个月后进行测定。结果表明，各处理均提高了土壤K+含量，但冬季处理的其他土壤性状与对照相当，说明冬季施用OMW对土壤具有一定的恢复潜力。相比之下，与土壤是否通过灌溉保持湿润无关，夏季处理显示土壤的拒水性提高了10倍，生物活性降低了3倍，酚类化合物含量提高了4倍。因此，当在炎热季节施用时，冬雨既不会降解也不会浸出OMW成分。需要进一步的研究来区分浸出和生物降解效应，并了解有机OMW成分的组成和降解动力学的发展。
Olive oil production generates large amounts of olive mill wastewater (OMW). OMW has a high nutrient content and could serve as fertilizer, but its fatty and phenolic constituents induce soil water repellency, phytotoxicity, and acidification. An appropriate season of OMW application may mitigate negative consequences while preserving beneficial effects. In order to investigate this, a field study was conducted, in which OMW was applied to an olive orchard in Israel either in winter or summer. Soil–water interactions (water drop penetration time, hydraulic conductivity), soil physicochemical parameters, phenolic compounds, and soil biological activity (bait‐lamina test) were determined 12 to 18 months after OMW application. The results showed elevated K+contents in all treatments, but all other soil properties of winter treatments were comparable to the control, which suggested a certain recovery potential of the soil when OMW is applied in winter. By contrast, summer treatments revealed a ten‐fold higher soil water repellency, a three‐times lower biological activity, and a four‐fold higher content of phenolic compounds, independently of whether the soil was kept moist by irrigation or not. Thus, the OMW constituents were neither degraded nor leached by winter rain when applied during the hot season. Further research is needed to distinguish leaching and biodegradation effects, and to understand the development of the composition and degradation kinetics of organic OMW constituents.
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DOI：
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2009
期刊：
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发表时间：
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期刊：
Agriculture, Ecosystems & Environment
影响因子：
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DOI：
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2010
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作者：
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