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首页> 外文期刊>Acta Horticulturae >Water use of an intermediate and a mature avocado orchard
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Water use of an intermediate and a mature avocado orchard

机译：水使用中间体和成熟的鳄梨果园

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The scarce water resources in South Africa are vulnerable to the increasing pressure of a changing climate. The recent drought experienced in South Africa (2014-2017) has negatively affected the fruit industry, highlighting the need to optimise wateruse efficiency (WUE) as well as accurately estimate water use. With avocado production in South Africa being export-oriented and dependant on irrigation, proper water management is vital to minimising water use, while maintaining fruit yield and quality.Data were collected in two commercial 'Hass' on 'Dusa' orchards, one a 4-year-old intermediate bearing orchard and the other, a 10-year-old full bearing orchard. Actual orchard evapotranspiration (ETa) defined as water use for this study was measured continuously using the eddy covariance method and a monthly crop coefficient was estimated. Measurements began in May and September 2017 for the intermediate and mature bearing orchards, respectively. Additional measurements included soil water content, predawn, and midday stem water potential and orchard microclimate. Daily average water use (ETa) for the measurement period was 2.8 and 3.5 mm day1 for the intermediate and mature orchards, respectively.
机译：南非稀缺的水资源易受不断变化的气候压力的影响。最近在南非经历的干旱（2014-2017）对水果产业产生了负面影响，突出了优化水性效率（WUE）以及准确估算的水使用。随着南非的鳄梨产量出口导向和依赖灌溉，适当的水管理对于最小化用水至关重要，同时保持水果产量和质量。在“Dusa”果园的两家商业“黑斯”中收集了果实收益。 - 旧中间轴承果园和另一个10岁的全轴承果园。使用涡旋协方差方法连续测量被定义为本研究用水的实际果树蒸散（ETA），估计每月作物系数。 2017年5月和2017年9月分别始于中级和成熟轴承果园的测量。额外的测量包括土壤含水量，预测和午间干水潜力和果园微气密。测量期间的日平均用水（ETA）分别为中间和成熟果园的2.8和3.5mm。

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