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首页> 外文期刊>Irrigazione e Drenaggio >Gestione dell'irrigazione nella fase di post-raccolta in una cultivar di uva da tavola a maturazione precoce
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Gestione dell'irrigazione nella fase di post-raccolta in una cultivar di uva da tavola a maturazione precoce

机译：早熟食用葡萄品种收获后阶段的灌溉管理

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摘要

This work shows the preliminary results of the effects of water availability on a Superior Seedless vineyard during the post-harvest period. The vines were trained to tendonesystem with a plant density of 800 vines per hectar, covered with aplastic film to obtain an earlier ripening of the berries. The vineyard water consumption was calculated using the Hargreaves equation multiplied by an appropiate crop coefficient. Shoot leaf area evolution has been determined by means destructive sampling. The following measurements were performed on each shoot: number of stem leaves and lateral leaves, leaf area of stem and lateral leaves, stem and lateral length. Further observations have regarded leaf water potential and soil humidity. At pruning time, the number of shoots per vine, their length and weight were measured separately on main and laterals axis. The pre-harvest irrigation scheduling was set giving back each week all the ETc of the period, while in the post-harvest phase two thesis, a Control or Irrigated one and a 30 percent Irrigated one, where established. The criteria fixed in pre-picking were followed for the control. Concerning the 30 percent Irrigated, thesis it was decided to give back 30 percent of the ETc of the period whenever 70 percent of the available water had been used up in the first 60 cm of soil. The results of the present work, though based on only one year of testing, have pointed out that a moderated water stress imposed during the post-harvest phase produced, in economical terms, a 132 mm of irrigation water saving on farm scale and also a smaller development of the leaf area on the laterals axis and a greater length of strongly lignified main axis. This is particularly important for the cultivar under discussion as it is characterized by basal bud sterility and needs of long cane in order to guarantee high productive levels.
机译：这项工作显示了收获后时期水资源供应对“高级无核”葡萄园的影响的初步结果。葡萄藤经过培训后可以采用“ tendone”系统，每公顷种植密度为800株葡萄藤，并覆盖有再生塑料膜，以使浆果早熟。使用Hargreaves方程乘以适当的作物系数计算出葡萄园的耗水量。已经通过破坏性取样的方法确定了枝叶面积的演变。对每个芽进行以下测量：茎叶和侧叶的数量，茎叶和侧叶的叶面积，茎和侧向长度。进一步的观察已经考虑了叶片的水势和土壤湿度。在修剪时，分别在主轴和横轴上测量每个藤蔓的枝条数量，其长度和重量。设定收获前灌溉时间表，每周返还该时期的所有ETc，而在收获后第二阶段，提出“控制”或“灌溉”和“ 30％灌溉”的论文。 >一，建立的地方。对照遵循预先挑选的标准。关于“ 30％的灌溉”，论文决定，当头60 cm的土壤中70％的可用水用完时，就返还该时期ETc的30％。尽管仅基于一年的测试，但目前的工作结果表明，从经济角度而言，在收获后阶段施加的适度水分胁迫，在农场规模上可节省132毫米的灌溉水，并且还可以在侧向轴上叶面积的发育变小，而强木质化主轴的长度变长。这对正在讨论的品种特别重要，因为其特征是基芽不育和需要长甘蔗以保证高产量。

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