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首页> 外文期刊>Acta Horticulturae >Postharvest regulated deficit irrigation of peach tree in a Mediterranean environment: effects on vegetative growth and yield.
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Postharvest regulated deficit irrigation of peach tree in a Mediterranean environment: effects on vegetative growth and yield.

机译：地中海环境下桃树的采后调节亏缺灌溉：对营养生长和产量的影响。

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摘要

The effect of postharvest-regulated deficit irrigation of cross-trained peach tree cv. Springcrest/GF677 on growth and yield was investigated in Italy during 1999-2001. Irrigation requirements were reduced by applying regulated deficit irrigation at phenological stages when the plants were less sensitive to water deficit. From bud break to harvest, irrigation was managed by applying water supply equal to 100% crop evapotranspiration (ETc); while from harvest to early autumn, water supply was equivalent to 100, 50 and 25% ETc. Water supply at 50% ETc did not cause reduction in yield or quality, and 1000, 1800 and 2400 m3/ha of water was saved under this treatment during 1999, 2000 and 2001, respectively. The irrigation volume at the postharvest stages ranged from 66 to 78% of the seasonal irrigation volume. The pre-dawn leaf water potential under 50 and 25% ETc reached maximum values of -0.5 and -0.75 MPa, respectively while this was in the range -0.2--0.3 MPa in the control.
机译：交叉训练桃树的采后调节亏缺灌溉的效果。在1999-2001年间，对意大利的Springcrest / GF677的生长和产量进行了调查。当植物对水分亏缺较不敏感时，在物候阶段采用调节亏缺灌溉可以减少灌溉需求。从花蕾到收割，灌溉均采用等于100％作物蒸散量（ETc）的供水进行;从收获期到初秋，供水量相当于ETc的100％，50％和25％。 ETc为50％时，供水不会导致产量或质量下降，在该处理过程中，1999、2000和2001年分别节水1000、1800和2400 m3 / ha。收获后阶段的灌溉量为季节性灌溉量的66％至78％。在ETc 50％和25％的条件下，黎明前的叶片水势分别达到-0.5和-0.75 MPa的最大值，而在对照中处于-0.2--0.3 MPa的范围内。

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