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几种主要绿化树种苗木耗水特性的研究 预览 被引量:27

A Study on the Characteristics of Water Consumption by Transpiration of the Seedlings of Main Afforestation Tree Species
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摘要 在自然条件下采用盆栽方法,用Licor-6400便携式光合系统测定仪和TC30K精密天平等仪器,对10种绿化树种的日蒸腾速率和实际蒸腾耗水速率进行了测定,得出了在正常水分条件下供试树种的蒸腾速率和蒸腾耗水速率.对不同气候条件下和昼夜不同时间段各树种的耗水特性进行了比较.研究结果表明,蒸腾耗水速率平均值在0.047 4~0.074 7 kg·h-1之间,山杏最高,黄松最低,山杏比黄松高1.58倍,其他树种由高到低依次为臭柏(0.071 kg·h-1)、紫穗槐(0.064 3 kg·h-1)、刺槐(0.062 5kg·h-1)、火炬树(0.061 6 kg·h-1)、侧柏(0.056 6 kg·h-1)、奥地利黑松(0.055 3 kg·h-1)、油松(0.054 7 kg·h-1)和榆树(0.053 8kg·h-1).平均蒸腾速率从大到小依次为火炬树(4.990 mmol·m-2·s-1)、山杏(2.675mmol·m-2·s-1)、榆树(1.830 mmol·m-2·s-1)、紫穗槐(1.000 mmol·m-2·s-1)、刺槐(0.975 mmol·m-2·s-1). Changes of transpiration rates of 10 main afforestation tree species cultured in plastic barrels and facture water consumption status were studied. The average transpiration rates per day and the facture water consumption rate of the 10 plants were compared .The authors obtained the quantity and rate of water consumption by transpiration under the normal water condition, and compared the characteristies of water consumption in different weather conditions and different periods in daytime and nighttime .The average facture water consumption rate of the plants are 0.047 4 kg·h~(-1) to 0.074 7 kg·h~(-1), the plants whose average facture water consumption rate are highest and lowest are Armeniaca sibirica and Pinus ponderosa respectively , and others are Sabina vulgaris(0.071 kg·h~(-1)), Amorpha fruticosa(0.064 3 kg·h~(-1)), Robinia pseudoacacia(0.062 5 kg·h~(-1)), Rhus typhina(0.061 6 kg·h~(-1)), Platycladus orientalis(0.056 6 kg·h~(-1)), Pinus nigra var. austriaca(0.055 3 kg·h~(-1)), P. tabulaeformis(0.054 7 kg·h~(-1)) and Ulmus pumila(0.0538 kg·h~(-1)) from high to low. The plants whose average transpiration rates from high to low are R. typhina(4.990 mol·m~(-2)·s~(-1)), A. vulgariss( 2.675 mol·m~(-2)·s~(-1) ), U. pamila( 1.830 mol·m~(-2)·s~(-1)), A. fruticosa( 1.000 mol·m~(-2)·s~(-1)) and R. pseudoacacia ( 0.975 mol·m~(-2)·s~(-1)). By studying the water consumption characteristies and the quantity of water consumption , it would be the beneficial to afforestation by selecting tree species of low water consumption under condition of water deficiency.
作者 康博文 侯琳 王得祥 刘建军 韩黎明 KANG Bo-wen~1, HOU Lin~1, WANG De-xiang~1, LIU Jian-jun~2, HAN Li-ming~2( 1. College of Forestry, Northwest A & F University,Yangling, Shaanxi 712100,China;2. Forestry Institute of Yan'an, Yan'an, Shaanxi 716000, China )
出处 《西北林学院学报》 CSCD 北大核心 2005年第1期 29-33,共5页 Journal of Northwest Forestry University
基金 国家科技攻关项目,西北农林技技大学校科研和教改项目
关键词 耗水特性 山杏 蒸腾速率 绿化树种 黄松 紫穗槐 火炬树 不同时间 正常 昼夜 afforestation tree species seedling transpiration rate water consumption
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