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梨园不同尺度耗水量对比研究

孙慧珍;李海朝   

  1. 东北林业大学, 哈尔滨 150040
  • 收稿日期:2008-07-08 修回日期:1900-01-01 出版日期:2009-04-10 发布日期:2009-04-10

Comparison of water consumption in a pear orchard estimated by heat pulse method nd infrared gas analyzer.

SUN Hui-zhen; LI Hai-chao   

  1. Northeast Forestry University, Harbin 150040, China
  • Received:2008-07-08 Revised:1900-01-01 Online:2009-04-10 Published:2009-04-10

摘要: 通过热脉冲法实时监测不同径级梨树树干液流速度,经尺度转换得到梨园液流量,与CIRAS-1红外气体分析仪测定叶片不同时期蒸腾速率经叶面积转换得到梨园蒸腾量进行对比,结果表明:基于叶片、单株计算的梨园耗水量分别为523.51和498.05 mm,二者具有很好的一致性。干径是由单株计算梨园耗水量的最佳转换因子。

关键词: 亚种间杂交稻, 受精, 温度, 模型

Abstract: The stem sap flow in different diameter classes of pear trees in a pear orchard in Yangling of Shaanxi Province was monitored by heat pulse method, and scaling -transformed into the sap flow in the orchard. In the meantime, a comparison wa s made between the sap flow in the orchard and the orchard transpiration obtaine d from the transformation of leaf transpiration rate measured by CIRAS-1 infrared gas analyzer. On the whole, the result of heat pulse method was consis tent with that of infrared gas analyzer. The pear orchard water consumption, bas ed on the stem sap flow of single tree and the leaf transpiration rate, was calc ulated as 52351 and 49805 mm, respectively. Basal diameter was the optimal s calar from individual tree up to pear orchard.

Key words: Intersubspecific hybrid rice, Fertilization, Temperature, Model