The effect of predetermined deficit irrigation on the performance of cv. Muhasan olives (Olea europaea L.) in the eastern coastal plain of Israel
The effect of predetermined deficit irrigation on the performance of cv. Muhasan olives (Olea europaea L.) in the eastern coastal plain of Israel
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DOI：
10.1016/j.scienta.2006.12.017
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发表时间：
2007-03-26
影响因子：
4.3
通讯作者：
Abramowitch, H.
中科院分区：
文献类型：
--
作者：
Lavee, S.;Hanoch, E.;Abramowitch, H.
CV的响应。研究了50%调亏灌溉（RDI）条件下木哈桑树及其果实特性。对减少灌溉的总体反应相对较小。然而，不同的施水时间对不同果实性状的影响是非常显著的。在最佳灌溉制度下，每年减少50%的灌溉水量，4年的油产量仅减少12.2%，果实产量减少18.5%。最有效的时间表是在石头硬化后应用所有的灌溉水。然而，在土壤较轻、持水能力较低或降雨量较低的地区，可能需要将一些水转移到开花前和坐果期。果实中果皮/内果皮（肉/核）的比例取决于在石头硬化期间的水分供应。当石材硬化期的水可用性降低时，该比率显著提高。油的积累率也受到灌溉制度的影响，但在“开”和“关”的年份是相同的。果实生长受灌溉制度的影响较小，但最显着的产量负荷。灌溉制度的所有影响在“开”年比在“关”年表现得更多。灌溉制度对叶片的交替结果和矿质元素含量没有明显的差异或一致的影响。(c)2006 Elsevier B. V.保留所有权利。
The response of cv. Muhasan trees and its fruit characteristics to a 50% regulated deficit irrigation (RDI) was studied. The general response to the reduced irrigation was relatively small. However, the schedule of water application was very significant for various fruit characteristics. In the best schedule the 50% reduction in annual irrigation water reduced the oil yield over 4 years by only 12.2% and that of the fruit yield by 18.5%. The most efficient schedule was based on applying all the irrigation water after stone hardening. In lighter soils however, with lower water holding capacity or in regions with a lower rainfall diverting some of the water to the pre-bloom and fruit set period might be needed. The fruit mesocarp/ endocarp (flesh/pit) ratio was dependent on the water availability during the stone hardening period. This ratio was significantly improved when water availability during the stone hardening period was reduced. The rate of oil accumulation was also affected by the irrigation schedule but was about the same in 'on' and 'off' years. Fruit growth was less affected by the irrigation schedule but most significantly by the yield load. All the affects of the irrigation schedules were more expressed in the 'on' years than in the 'off' years. No clear cut differences or consistent effects of the irrigation schedule were found on the degree of alternant bearing and mineral content of the leaves. (c) 2006 Elsevier B.V. All rights reserved.