武阳,王伟,赵智,黄兴法,范云涛,苏柳芸.调亏灌溉对香梨叶片光合速率及水分利用效率的影响[J].农业机械学报,2012,43(11):80-86.
Wu Yang,Wang Wei,Zhao Zhi,Huang Xingfa,Fan Yuntao,Su Liuyun.Photosynthesis Rate and Leaf Water Use Efficiency of Korla Fragrant Pear Tree under Regulated Deficit Irrigation[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(11):80-86.
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调亏灌溉对香梨叶片光合速率及水分利用效率的影响   [下载全文]
Photosynthesis Rate and Leaf Water Use Efficiency of Korla Fragrant Pear Tree under Regulated Deficit Irrigation   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2012.11.015
中文关键词:  库尔勒香梨  调亏灌溉  光合速率  蒸腾速率  气孔开度  水分利用效率
基金项目:“十一五”国家科技支撑计划资助项目(2007BAD38B00);国家自然科学基金资助项目(50879087)
作者单位
武阳 中国农业大学 
王伟 中国农业大学 
赵智 中国农业大学 
黄兴法 中国农业大学 
范云涛 中国农业机械化科学研究院 
苏柳芸 巴音郭楞蒙古自治州林业技术推广中心 
中文摘要:试验研究了调亏灌溉对成龄库尔勒香梨树叶片生理指标的影响。在果实快速膨大前期分别施加了2种水分胁迫:轻度水分胁迫,灌水量为蒸发量的60%;重度水分胁迫,灌水量为蒸发量的40%。在果实快速膨大期,灌水量为蒸发量的80%。对照处理为香梨的整个生育期灌水量均为蒸发量的80%。结果表明,调亏灌溉期间,水分胁迫显著地降低了香梨树的叶片光合速率、蒸腾速率与气孔开度;果实快速膨大期,调亏处理恢复充分灌后,叶片光合速率、蒸腾速率及气孔开度均在一定程度上恢复,轻度调亏处理恢复到与对照相同的水平,而重度的水分胁迫处理却始终低于对照。叶片蒸腾速率比光合速率对土壤水分变化更敏感,水分胁迫可提高香梨树的叶片水分利用效率。
Wu Yang  Wang Wei  Zhao Zhi  Huang Xingfa  Fan Yuntao  Su Liuyun
China Agricultural University;China Agricultural University;China Agricultural University;China Agricultural University;Chinese Academy of Agricultural Mechanization Sciences;Forestry Technology Promotion Center of Bayingolin Mongol Autonomous Prefecture
Key Words:Korla fragrant pear  Regulated deficit irrigation  Photosynthesis rate  Transpiration rate  Stomatal conductance  Water use efficiency
Abstract:The experiment was conducted to study the effects of regulated deficit irrigation on these parameters of the Korla fragrant pear tree.The water deficit applied before the fruit enlargement stage included: slight water deficit, the trees were irrigated with 60% of US Class A pan evaporation (Ep); severe water deficit, the trees were irrigated with 40% of Ep. During the fruit enlargement stage, both water deficit treatments were irrigated with 80% of Ep. The control was irrigated with 80% of Ep during the whole growth season. The results indicated that the leaf photosynthesis rate, transpiration rate and stomatal conductance were significantly reduced by the soil water deficit. After full irrigation resumed, the leaf photosynthesis rate, transpiration rate and stomatal conductance restored rapidly to some extent, the physiological parameters of slight water deficit reached the control level in the middle August, however, those of the severe water deficit were always lower than the control. As compared with the photosynthesis, the transpiration was more sensitive to the soil water deficit, resulting in the improvement of the leaf water use efficiency.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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