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Effect of manganese fertilizer on maize photosynthetic performance under soil drought condition
Authors
邱莉萍
郝明德
魏孝荣
Publication date
1 January 2004
Publisher
Abstract
在盆栽条件下进行了土壤干旱时夏玉米施用微量元素锰的试验。通过测定拔节期玉米叶片气孔导度(Cs)、细胞间隙CO2浓度(Ci)、蒸腾速率(Tr)、光合速率(Pn)和水分利用效率(WUR)等指标,探讨了干旱胁迫下外源锰对夏玉米光合特性的影响。结果表明,施用锰肥能降低光合作用的气孔限制和非气孔限制,显著提高夏玉米光合能力。锰肥对夏玉米光合作用的影响在土壤干旱时尤为显著。土壤干旱情况下,锰肥可使玉米叶片Cs增加58 11%,Pn和WUR分别增加42 07%和50 00%,从而减轻了土壤干旱对玉米光合作用的抑制
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018