平欧杂种榛果实发育期树干茎流与环境因子及光合参数的关系  

Relationship between stem sap flow of Corylus heterophylla×Corylus avellane and environmental factors and photosynthetic parameters

作　　者：王灵哲 宋锋惠 史彦江[1,2] 凌锦霞 罗达[2] 宋子君 WANG Lingzhe;SONG Fenghui;SHI Yanjiang;LING Jinxia;LUO Da;SONG Zijun(college of Horiculhre,Ymnjitng Agricultural Unversity,Urumqi 830052,Xmjiang,China;Researsh nstitule of Economic Forest,Xinjiang Academy of Forestry Sciences,Urumqi 830000,Xinjiang,China)

机构地区：[1]新疆农业大学园艺学院,乌鲁木齐830052 [2]新疆林业科学院经济林研究所,乌鲁木齐830000

出　　处：《果树学报》2022年第3期439-448,共10页Journal of Fruit Science

基　　金：自治区公益性科研院所基本科研业务费专项资金项目“平欧杂种榛生理生态学特性研究(KY2019034)”。

摘　　要：【目的】在新疆伊犁对8年生达维平欧杂种榛的茎流速率进行一年的定点监测,同时观测了平欧杂种榛的果实不同发育期内气象和光合因子对茎流的影响,为榛树在干旱区的科学灌溉提供理论依据。【方法】利用包裹式茎流仪对盛果期的平欧杂种榛茎流速率进行连续测定,并监测样地的大气温度、太阳辐射、大气相对湿度和风速等气象因子并测定不同果实发育期的光合变化,研究气象、光合等因子对不同发育期榛树茎流变化的影响。【结果】整个果实生长发育期茎流速率昼夜变化差异较大,白天茎流速率变化曲线呈倒“U”形。茎流日累积量在不同发育期存在差异,果壳硬化期最大,为2.57 L·d^(-1),坐果期最小,为1.65 L·d^(-1)。太阳辐射、大气温度和叶片温度是果实生长发育期茎流速率的主要影响因子。对榛树不同果实发育期的茎流速率与气象因子、光合参数建立多元线性回归模型,经过回归系数和相关系数检验,多元线性回归方程均达到显著水平。【结论】在新疆伊犁地区,7月是榛果发育的果壳硬化期,榛树不仅自身生长旺盛,而且受太阳辐射、温度等因子的影响,导致果园蒸腾耗水量大,应及时补充灌水。【Objective】In recent years, Ping’Ou hybrid hazelnut has become a new tree species developed in Xinjiang area. The introduction and cultivation of Ping’Ou hybrid hazelnut have started in various parts of the south and north of Xinjiang. It has good ecological adaptability and good fruit quality according to the experimental observations. Therefore, it has great potential to be a new generation of economic tree species in Xinjiang. Due to the short cultivation time and the lack of production technology suitable for Xinjiang’s natural conditions, proper irrigation methods need to study. In the Hazelnut Demonstration Garden in Qapqal county, Yili, Xinjiang, the stem sap flow of 8 years of Ping’Ou hybrid hazelnut were monitored for one year. Determination of the influence of meteorological and photosynthetic factors on sap flow in different growth periods of Ping’Ou hybrid hazelnuts were carried ou to provide a theoretical basis for the scientific irrigation of hazelnut in arid areas.【Methods】Continuous measurement of the stem flow rate of Ping’Ou hybrid hazelnut was carried out in the full fruit developing period using the wrapped stem sap flow meter. A HOBO microclimate near the test site was installed to measure solar radiation(PAR), air temperature(Ta), air relative humidity(RH), and wind speed(W). The photosynthetic parameters of each plant’s leaves were measured under sunny weather and natural light conditions using the CIRAS-2 portable photosynthesis measuring system produced by the British company PP-Systems.The relationship between the characteristics of hazelnut stem sap flow and the changes of weather and photosynthesis in different growth periods was also explored in the study.【Results】The stem sap flow rate varied greatly with day and night during the fruit developing period. During the day, the changing curve of sap flow rate was an“inverted U”shape, and there was only a very small sap flow during the night. The daily cumulative amount of stem sap flow was different in the d

关 键 词：平欧杂种榛 发育期 茎流速率 光合性能 气象因子 

分 类 号：S666.4[农业科学—果树学]