初果期矮化中间砧‘红富士’苹果生长期茎流变化规律初报

Primary report on sap flow of dwarfing intermediate stock 'Red Fuji' apple during growing season

以4年生‘红富士’(中间砧为‘SH3’)为试材,利用AZ-D茎流系统监测生长期茎流数据、HOBO气象站同步监测气象因子数据,研究了其茎流变化规律及其与环境因子的关系。结果表明:生长期苹果茎流呈现出明显的日际、旬变化特征,2008、2009年旬茎流量最大值分别为50.84 kg和86.09 kg,整个生长周期中新梢二次生长期茎流量所占比重较大,分别占生长期的25.41%和34.11%。相关分析结果表明,茎流量与空气温度、地温、总辐射及光合有效辐射极显著正相关。

4 year ＇Red Fuji＇ apple trees was used to study the sap flow by AZ-D observation system,and meteorological factors data were monitored by HOBO weather station meteorology system simultaneously.The variations of sap flow and influence factors were analyzed.The results are as follows： The sap flow demonstrated daily and ten-day variations in growing season.The highest sap flows are 50.84 kg and 86.09 kg in a period of ten days in 2008 and 2009 respectively.A large part of the sap flow appeared in the second growing season of shoots and the proportion amounted to 25.41% and 34.11% respectively.There are significant positive correlations between sap flow rates with air temperature,ground temperature,the total radiation and photosynthetic active radiation.