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首页> 外文期刊>Agricultural Water Management >Long-term growth and yield responses of olive trees to different irrigation regimes.
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Long-term growth and yield responses of olive trees to different irrigation regimes.

机译：橄榄树对不同灌溉方式的长期生长和产量响应。

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摘要

The aim of this work was to evaluate long-term effects of different irrigation regimes on mature olive trees growing under field conditions. A 9-year experiment was carried out. Three irrigation treatments were applied: no irrigation, water application considering soil water content (short irrigation), or irrigation without considering soil water reserves and applying a 20% of extra water as a leaching fraction (long irrigation). Leaf water content, leaf area, vegetative growth, yield and fruit characteristics (fruit size, pulp:stone ratio and oil content) were determined yearly. Results showed that growth parameters did not show significant differences as a consequence of applied water. Yield was increased in irrigated trees compared to non-irrigated ones, but little differences between short and long irrigation were observed, only when accumulated yield from 1998 to 2006 was considered. Irrigation did not cause significant differences in fruit size or pulp:stone ratio either. Irrigation regimes similar to those applied in this experiment, under environmental conditions with relatively high mean annual precipitation, does not increase growth, yield or fruit characteristics when compared to rain-fed treatment, and consequently, the installation of a irrigation system could be not financially profitable.
机译：这项工作的目的是评估不同灌溉制度对田间条件下生长的成熟橄榄树的长期影响。进行了为期9年的实验。进行了三种灌溉处理：不灌溉，考虑土壤含水量的水施用（短期灌溉），或不考虑土壤水储量且施用20％的额外水作为淋滤部分的灌溉（长期灌溉）。每年测定叶片含水量，叶片面积，营养生长，产量和果实特性（果实大小，果肉：石比率和油含量）。结果表明，由于施用水，生长参数没有显示出显着差异。与未灌溉的树相比，灌溉树的产量有所增加，但只有在考虑了1998年至2006年的累计产量后，短期和长期灌溉之间的差异很小。灌溉也没有导致果实大小或果肉：结石比例的显着差异。与本实验相似的灌溉制度在与年雨灌溉比较的情况下，在具有较高年平均降水量的环境条件下，不会增加生长，产量或水果特性，因此，灌溉系统的安装可能不经济。有利可图。

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