不同树形对贵人香葡萄生长和果实品质的影响

来源 :干旱地区农业研究 | 被引量 : 0次 | 上传用户:Purview
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对河西走廊埋土防寒区酿酒葡萄贵人香开展树形改造试验,将多主蔓V形水平龙干形(CK)改造为单臂单蔓篱架水平龙干形(DLL)和单臂单蔓Y型水平龙干形(DYL)树形。通过对树体光合特性、生长及果实品质对比研究,结果表明:与CK相比,DLL和DYL两种树形均提高了叶片的光合性能,叶片中叶绿素a含量显著增加,但只有DLL树形叶片叶绿素a/b值显著高于对照;自然条件下晴天光合日变化中,不同树形均出现明显的午休现象,其中DLL树形的午休现象较轻,且恢复较快。DLL和DYL两种树形第3节位粗度分别比对照提高了51.71%
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