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首页> 外文期刊>Acta Horticulturae >Deficit irrigation effects on yield components of olive trees during the onset of fruit production.
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Deficit irrigation effects on yield components of olive trees during the onset of fruit production.

机译：水果生产初期，灌溉不足对橄榄树的产量构成影响。

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A 3-year deficit irrigation study was conducted on young olive (Olea europaea 'Frantoio') trees to determine the effect of reduced water supply from the onset of full fruit production on vegetative growth, fruit characteristics, and yield components. Irrigation was carried out from 5-6 until 5-19 weeks after full bloom (AFB) using subsurface drip lines. The volume of water applied to the fully-irrigated trees, calculated from effective evapotranspiration was 558, 1293, and 1857 m3 ha-1 in 2006, 2007 and 2008, respectively. During the same irrigation period the deficit-irrigated trees received approximately 50% total water of the fully-irrigated trees. Deficit irrigation reduced the trunk cross sectional area (TCSA) to 69% of the fully-irrigated treatment over the three years. Yield components were differently affected by deficit irrigation. Over the 3-year period fruit yield and oil yield of deficit irrigated trees were 79 and 83% those of well irrigated ones, respectively but, when expressed on a TCSA basis, they were 89 and 100%. Fruit fresh weight and pulp/pit ratio were decreased slightly, although non-significantly, with the 50% deficit irrigation, whereas oil in the mesocarp basis was similar in both watering regimes. These results show that deficit irrigation starting from the onset of fruit production is sustainable, allowing substantial saving of water in olive orchards.
机译：对橄榄幼树进行了为期3年的亏水灌溉研究，以确定从完全果实生产开始就减少供水对营养生长，果实特性和生长的影响。产量成分。在盛开（AFB）后的5-6周到5-19周之间，使用地下滴灌线进行灌溉。根据有效蒸散量计算，2006年，2007年和2008年，用于有效灌溉的树木的灌溉水量分别为558、1293和1857 m 3 ha -1 。在相同的灌溉期内，亏缺灌溉的树木接收的水量约为完全灌溉树木的50％。在三年中，亏水灌溉将树干的横截面积（TCSA）降至完全灌溉处理的69％。亏缺灌溉对产量构成的影响不同。在三年期间，亏缺灌溉树的水果产量和油脂产量分别为良好灌溉树的79％和83％，但以TCSA表示，分别为89％和100％。缺水50％灌溉时，果实鲜重和果肉/果皮比略有下降，尽管不显着，但两种浇水方式中果皮的油脂相似。这些结果表明，从水果生产开始就进行亏缺灌溉是可持续的，从而可以大量节省橄榄园中的水。

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