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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (6): 35-38.doi: 10.11924/j.issn.1000-6850.2014-2517

所属专题： 小麦

• 农学 农业基础科学 • 上一篇    下一篇

施磷对黄土旱塬小麦水分利用效率、水势及产量的影响

张蓓蓓   

  1. (陕西省灾害监测与机理模拟重点实验室/宝鸡文理学院地理与环境学院,陕西宝鸡 721013）
  • 收稿日期:2014-09-16 修回日期:2015-02-06 接受日期:2014-11-06 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 张蓓蓓
  • 基金资助:
    宝鸡文理学院重点项目“基于稳定性δ13C技术下的小麦水分利用效率与环境因子关系研究”(ZK11065)。

Effects of Phosphorus Adding on Water Use Efficiency, Leaf Water Potential and Yield of Wheat on Loess Plateau

Zhang Beibei   

  1. (Shaanxi Key Laboratory of Disaster Monitoring and Mechanism Modeling/College of Geography and Environment, Baoji University of Arts and Sciences, Baoji Shaanxi 721013)
  • Received:2014-09-16 Revised:2015-02-06 Accepted:2014-11-06 Online:2015-03-20 Published:2015-03-20

摘要： 为了研究黄土旱塬农业肥料的施用效果，选取3个磷肥施加水平（P0，P90和P180），研究了施磷对黄土旱垣农业生态区小麦气体交换指标、瞬时水分利用效率、叶片水势及产量的影响，并对它们之间的关系做了分析。结果表明：随着施磷量的增加小麦叶片光合性能随之升高，且各处理之间差异显著；施磷提高了小麦的瞬时水分利用效率(WUEi)；随着磷肥的施加，叶片水势随之升高；最终产量以P180处理最高，为4550 kg/hm2。各指标相关分析结果表明，气体交换指标与叶片瞬时水分利用效率(WUEi)、叶片水势及产量之间达到显著或极显著相关；且各光合性能参数与水势和产量之间的相关性大于与WUEi的相关性。WUEi与水势和产量之间也存在着显著的相关关系。

关键词: 交替隔沟灌溉, 交替隔沟灌溉, 常规沟灌, 土壤水分, 土壤温度, 分布

Abstract: In order to know the effect of phosphorus fertilizer adding in loess plateau agriculture, the leaf gas exchange parameters, instantaneous water use efficiency (WUEi), leaf water potential and yield were measured under three phosphorus adding (P0, P90 and P180) on the Loess Plateau in Shaanxi Province. And the relationships among them were also analyzed. The results showed that, the photosynthetic performance was enhanced with the adding of phosphorus, and there were significant differences among the treatments. The adding of phosphorus could improve the WUEi, and the leaf water potential was also improved. The highest yield was the treatment P180, 4550 kg/hm2. There were significant correlations between gas exchange parameters and WUEi, leaf water potential, yield, while the correlation coefficients between photosynthetic performance and leaf water potential, yield were higher than that between photosynthetic performance and WUEi. There was also significant correlation between WUEi and yield.