| 摘要: |
| 为探讨果园铺设反光膜对桃树不同冠层叶片的光合能力和果实品质的影响,本试验利用LI-6400便携式光合测定仪,测量了铺设反光膜后不同时期桃树树体不同冠层叶片的最大光合能力,并对不同冠层内果实的品质进行了测定。结果表明:铺设反光膜能有效地改善树体内膛的光照情况,特别是树冠中下部的内膛区域,显著提高了叶片的净光合速率、气孔导度和胞间CO2含量,但对上部区域的叶片影响并不显著。铺设反光膜显著地提高了中下部内膛果实的可溶性固形物和可溶性糖含量,降低了果实的硬度和含酸量,并显著提高了果实背阴面的花青苷含量。试验表明,反光膜应用于桃树生产栽培能提高中下层叶片的光合能力,改善果实风味和外观品质,促进全红果的形成,有利于桃树的优质栽培。 |
| 关键词: 桃 反光膜 最大光合能力 光合速率 花青苷 |
| DOI：10.11841/j.issn.1007-4333.2009.04.084 |
| 分类号:S661.1 |
| 基金项目:北京市科技计划项目(D0706002040131) |
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| Effect of reflective film on the photosynthetic capacity of leaf and fruit quality at different canopies of peach |
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ZHOU Jun WANG Hong-qing
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College of Agronomy and Biotechnology;China Agricultural University;Beijing 100193;China
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| Abstract: |
| In order to investigate the effect of reflective film on the photosynthetic capacity of leaf and fruit quality in a peach orchard,the photosynthetic capacity and fruit flavor and appearance of five-year-old peach trees at different canopies were studied,with and without reflecting film mulch during fruit maturation stage(July-Aug 2007 and 2008) in selected peach orchards.The reflecting film mulch improved light situation of the inner canopy,especially the middle and lower inner canopies.Net photosynthetic r... |
| Key words: peach reflecting film photosynthetic capacity net photosynthetic rate anthocyanin |
