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首页> 外文期刊>Acta Horticulturae >Estimation of water requirements of 'Thompson Seedless' trained on an overhead trellised system using an eddy covariance method in the Aconcagua valley, Chile.
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Estimation of water requirements of 'Thompson Seedless' trained on an overhead trellised system using an eddy covariance method in the Aconcagua valley, Chile.

机译：在智利阿空加瓜河谷采用涡动协方差法估算在架空格架系统上训练的“汤普森无核”的需水量。

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摘要

During the 2008-2009 season, net radiation (Rn) and soil heat flux (G), sensible heat flux (H) and latent heat flux (LE= lambda ETc where ETc is vine evapotranspiration and lambda is the latent heat of vaporization) were measured on a drip-irrigated 'Thompson Seedless' vineyard trained on an overhead trellised system ("parronal espanol"). The experiment was located in Calle Larga, Aconcagua valley, Chile (32 degrees 52'40"S, 70 degrees 37'45"O, 795 m a.s.l.). LE and H were obtained from an eddy covariance system. The reference evapotranspiration (ETo) was calculated using the FAO-Penman-Monteith model. Results indicated that the closure (ratio of LE+H to Rn-G) was 0.91 in November '08 and 0.82 in January '09. At flowering (74% solar interception), the mean ratios of LE, H and G to Rn were 0.53, 0.26 and 0.11, respectively. At veraison (98% solar interception) LE, H and G were 0.81, 0.01 and 0.1 of Rn respectively. Also, an increase of crop coefficient (Kc=ETc/ETo) values from October to mid-November was observed. Afterwards, it was almost stable until mid-January when an increase was again observed. A maximum Kc value of 1.3 was reached at veraison.
机译：在2008-2009季节，净辐射（Rn）和土壤热通量（G），显热通量（H）和潜热通量（LE = lambda ETc，其中ETc是葡萄的蒸散量，lambda是汽化的潜热）。在滴水灌溉的“汤普森无核”葡萄园上进行测量，该葡萄园在架空的格状系统（“额头西班牙人”）上进行训练。该实验位于智利阿空加瓜谷的卡勒拉尔加（南纬32度52'40“，南纬70度37'45”，795 m a.s.l.）。 LE和H是从涡动协方差系统获得的。参考蒸发蒸腾量（ETo）是使用FAO-Penman-Monteith模型计算的。结果表明，封闭时间（LE + H与Rn-G的比率）在'08年11月为0.91，在'09年1月为0.82。开花时（74％的日照率），LE，H和G与Rn的平均比分别为0.53、0.26和0.11。在确证时（98％的太阳拦截），LE，H和G分别为Rn的0.81、0.01和0.1。另外，从10月到11月中旬，农作物系数（Kc = ETc / ETo）值增加。此后，直到1月中旬再次观察到上升的时候，它几乎是稳定的。验证时，最大Kc值为1.3。

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