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首页> 外文期刊>Acta Horticulturae >Monitoring spatial variability in an apple orchard under different water regimes
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Monitoring spatial variability in an apple orchard under different water regimes

机译：在不同水域下监测苹果园中的空间变异性

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摘要

Precision fruticulture addresses site or tree-adapted crop management. In the present study, soil and tree status, as well as fruit quality at harvest were analysed in a commercial apple [Malus x domestica 'Gala Brookfield'/Pajaml) orchard in a temperate climate. Trees were irrigated in addition to precipitation. Three irrigation levels (0, 50 and 100%) were applied. Measurements included readings of apparent electrical conductivity of soil (ECa), stem water potential, canopy temperature obtained byinfrared camera, and canopy volume estimated by LiDAR and RGB colour imaging. Laboratory analyses of 6 trees per treatment were done on fruit considering the pigment contents and quality parameters. Midday stem water potential (SWP), normalized crop water stress index (CWSI) calculated from thermal data, and fruit yield and quality at harvest were analysed. Spatial patterns of the variability of tree water status were estimated by CWSI imaging supported by SWP readings. CWSI ranged from 0.1 to 0.7 indicating high variability due to irrigation and precipitation. Canopy volume data were less variable. Soil ECa appeared homogeneous in the range of 0 to 4 mS m1. Fruit harvested in a drought stress zone showed enhanced portion of pheophytin in the chlorophyll pool. Irrigation affected soluble solids content and, hence, the quality of fruit. Overall, results highlighted that spatial variation in orchards can be found even if marginal variability of soil properties can be assumed.
机译：精密富裕地址网站或树木适应的作物管理。在目前的研究中，在一个温带气候中，在商业苹果[Malus x Domestica'Gala Brookfield'/ Pajaml）果园中分析了土壤和树木地位，以及收获的水果质量。除沉淀外，灌溉树木。施用三种灌溉水平（0,50％和100％）。测量包括土壤（ECA）的表观电导率，阀杆水势，通过微射线照相机获得的冠层温度以及LIDAR和RGB彩色成像估算的冠层体积的读数。考虑颜料含量和质量参数，对果实进行6棵树的实验室分析。分析了由热数据计算的午间干水潜力（SWP），归一化作物水分应激指数（CWSI），以及收获的果原产量和质量。 SWP读数支持的CWSI成像估算树水状况变异的空间模式。 CWSI范围为0.1至0.7，表示由于灌溉和降水导致的高变异性。天盖卷数据变量较小。土壤ECA出现在0至4ms M1的范围内。在干旱胁迫区中收获的水果在叶绿素池中显示出苯酚肽的增强部分。灌溉会影响可溶性固体含量，因此，水果的质量。总体而言，结果突出显示，即使土壤特性的边缘变异性也可以找到果园的空间变化。

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  • 来源
    《Acta Horticulturae》 |2018年第1197期|共8页
  • 作者

    R. Rud; J. Kathner; J. Giesser; R. Pasche; A. Giebel; J. Selbeck; C. Shenderey; D. Fleury; M. Zude-Sasse; V. Alchanatis;

  • 作者单位

    Institute of Agricultural Engineering Agricultural Research Organization Volcani Center Israel;

    Institute of Agricultural Engineering Agricultural Research Organization Volcani Center Israel;

    Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB) Potsdam-Bornim Germany;

    University of Applied Sciences UAS Changins Nyon (VD) Switzerland;

    University of Applied Sciences UAS Changins Nyon (VD) Switzerland;

    Institute of Agricultural Engineering Agricultural Research Organization Volcani Center Israel;

    University of Applied Sciences UAS Changins Nyon (VD) Switzerland;

    Institute of Agricultural Engineering Agricultural Research Organization Volcani Center Israel;

    Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB) Potsdam-Bornim Germany;

    Institute of Agricultural Engineering Agricultural Research Organization Volcani Center Israel;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 园艺;
  • 关键词

    apple; CWSI; precision agriculture; management zone;

    机译：苹果;CWSI;精密农业;管理区;

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