Effect of Regulated Deficit Irrigation on Physiological and Photosynthetic Characteristics of Summer Maize and Its Optimized Combination of Agronomic Techniques

MENG Zhao-jiang; BIAN Xin-ming; LIU An-neng; PANG Hong-bin; WANG He-zhou

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Effect of Regulated Deficit Irrigation on Physiological and Photosynthetic Characteristics of Summer Maize and Its Optimized Combination of Agronomic Techniques

更新时间：2024-11-07

- Effect of Regulated Deficit Irrigation on Physiological and Photosynthetic Characteristics of Summer Maize and Its Optimized Combination of Agronomic Techniques
- Vol. 20, Issue 3, Pages: 182-186(2006)
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  CLC： S274.1S513
- Published：2006
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MENG Zhao-jiang, BIAN Xin-ming, LIU An-neng, et al. Effect of Regulated Deficit Irrigation on Physiological and Photosynthetic Characteristics of Summer Maize and Its Optimized Combination of Agronomic Techniques[J]. 2006, 20(3): 182-186.
DOI：

MENG Zhao-jiang, BIAN Xin-ming, LIU An-neng, et al. Effect of Regulated Deficit Irrigation on Physiological and Photosynthetic Characteristics of Summer Maize and Its Optimized Combination of Agronomic Techniques[J]. 2006, 20(3): 182-186. DOI：

摘要

在移动式防雨棚下，采用子母盆栽土培法和池栽微区试验相结合的方法，以夏玉米（Zeamay L．）为材料进行了调亏灌溉试验研究。结果表明，适时适度的水分调亏显著抑制蒸腾速率（Tr），而光合速率（Pn）下降不明显，复水后Pn又具有超补偿效应，光合产物具有超补偿积累，且有利于向籽粒运转与分配；抑制营养生长，促进生殖生长。玉米节水高产的调亏灌溉指标是：调亏时段为三叶-心-拔节（七叶一心），调亏度为45％FC（Field water capacity，FC）～65％FC，历时21d；或拔节一抽穗调亏，调亏度为60％FC～65％FC，历时21d；平均比对照增产25．24％，节水15．41％，水分利用效率提高45．05％。根据3因子正交旋转组合设计综合试验资料，分别建立了经济产量（Y）及水分利用效率（WUE）数学模型。

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