Effect Evaluation of Water Saving Irrigation Based on Water Physiological Characteristics

MA Jian-xin; LI Wei-hong; HUANG Xiang; ZHU Cheng-gang

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Effect Evaluation of Water Saving Irrigation Based on Water Physiological Characteristics

更新时间：2024-11-07

- Effect Evaluation of Water Saving Irrigation Based on Water Physiological Characteristics
- Vol. 25, Issue 5, (2011)
- 作者机构：
  
  1. 荒漠与绿洲生态国家重点实验室中科院新疆生态与地理研究所
  2. 中国科学院研究生院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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MA Jian-xin, LI Wei-hong, HUANG Xiang, et al. Effect Evaluation of Water Saving Irrigation Based on Water Physiological Characteristics[J]. 2011, 25(5).
DOI：

MA Jian-xin, LI Wei-hong, HUANG Xiang, et al. Effect Evaluation of Water Saving Irrigation Based on Water Physiological Characteristics[J]. 2011, 25(5). DOI：

摘要

以新垦绿洲主干防护林树种俄罗斯杨(Populus russkii Jabl.)为研究对象

通过对A(膜侧细流沟灌

灌溉定额3 750m3/hm2

少量多次灌溉)和B(漫灌

灌溉定额7 500m3/hm2

隔月灌)灌溉方式下俄罗斯杨树干液流、当年生枝条水势(ψs)以及叶片光合特征的同步监测

结合气象因子数据

分析比较2种灌溉方式下的俄罗斯杨水分生理特征。结果表明:B方式下俄罗斯杨树干液流速度与A方式比较有所降低

日均下降4.7%

但差异未达到显著水平(Sig.>0.10);2种灌溉方式下俄罗斯杨当年生枝条水势没有通过差异显著性检验(Sig.>0.142);A方式下的俄罗斯杨叶片净光合速率(Pn)、气孔导度(Gs)、瞬时蒸腾速率(Tr)、水分利用效率(WUE)均高于B方式的。综合分析认为

A方式节水效果显著

能够满足研究区俄罗斯杨生长的水分需求

过度灌溉会对俄罗斯杨产生不利影响;植物液流、水势等水分生理指标可做作调控和节水灌溉的科学依据。

Abstract

In new-cultivated oasis

by taking main tree species(Populus russkii Jabl.) of backbone shelterbelt as the research object.Under A and B irrigation treatments

simultaneous monitoring stem sap flow

shoots water potential and photosynthetic characteristics

and combined with the data of meteorological factors

analysis and comparison the water physiological characteristics of the P.russkii Jabl.under the 2 kinds of irrigation treatments.The results showed that: Compare with A

B treatment

the stem sap flow speed ...

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