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葡萄不同栽培方式叶幕光能利用的综合评估参数──叶幕受光指数 被引量:6

Index of Canopy Exposure to Light (CE)──A Parameter for Evaluating the Pot6ntial of Canopy Light Utilization of Grapevine Training Systems
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摘要 本文提出并论证了葡萄不同栽培方式叶幕光能利用的综合评估参数—叶幕受光指数(CE),并建立了CE值的测算系统。计算了国内外九种主要栽培方式的CE数值,并据此对这些栽培方式的叶幕结构的光能利用效率进行了排序简评。文中提出:CE≥1.45为葡萄叶幕光能利用的最佳取值范围,并指出在不同条件下CE的取值范围有所变化。 Based on experiments of many years, an index of Canopy Exposure to light (CE) for evaluating the potential of canopy light utilization of different training systems of grapevine was put forword and demonstrated. It is defined as CE = L / W, where L is, perpendicularly to the row direction, the length sum of canopy plane exPOsed to light at 09: 00 and 15: 00, two characteristic and representative moment of solar time during the day after complete canopy formation in growing season; W is the row width.The system of theoretical calculatinn for CE was also established. The ligh utilization efficiency for each of nine different training systems currently used in China and in the other Parts of the world was estimated and these training systems were classified by their CE values. It is pointed out that CE≥1.45 is a best range for canopy light utilization and this range should be adjusted in some special conditions.
作者 张大鹏
出处 《园艺学报》 CAS CSCD 北大核心 1995年第4期323-330,共8页 Acta Horticulturae Sinica
基金 国家自然科学基金
关键词 葡萄 栽培方式 叶幕结构 叶幕受光指数 Grapevine Training system Canopy structure, Index of canopy exposure to light (CE)
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