杏李树干液流变化与环境因子的关系研究  

Study on the Relationships between Environmental Factors and Stem Sap Flow of Prunus salicina × armeniaca

作　　者：李雯雯[1] 魏雅君[1] 冯贝贝[1] 牛莹莹[1] 徐业勇 王明 杨红丽 廖康[1] LIWen-wen WEIYa-jun FENGBei-bei NIUYing-ying XUYe-yong WANG Ming YANG Hong -li LIAO Kang(Research Center of Featured Fruit Trees, Xinjiang Agricultural University, Urumqi 830052, China Jiamu Test Station, Xinjiang Academy of Forestry, Wensu Xinjiang 843100, China)

机构地区：[1]新疆农业大学特色果树研究中心,乌鲁木齐830052 [2]新疆林科院佳木试验站,新疆温宿843100

出　　处：《新疆农业科学》2016年第12期2194-2202,共9页Xinjiang Agricultural Sciences

基　　金：中央财政林业科技推广项目"杏李优质高效栽培技术示范与推广"(ZYLYKJTG2015020)~~

摘　　要：【目的】研究杏李树干液流变化与环境因子的关系,了解树体蒸腾耗水规律,为杏李水分管理提供理论依据。【方法】采用PS-TDP8型热耗散式树干液流测定系统连续监测,分析环境因子对液流速率的影响。【结果】杏李在不同生长阶段液流日变化均呈昼高夜低的单峰曲线,晴天液流速率高于阴天。各月液流速率均不相同,4月液流速率最低,月液流量为232.31 L,6月液流速率最高,月液流量为533.81 L。4、6和8月,杏李液流速率均与空气温度相关性最大,相关系数分别为0.831、0.806、0.846。5、7月,液流速率与光照强度的相关性最大,相关系数分别为0.860、0.863。4~8月回归方程决定系数R2均在0.8左右。【结论】在生长期,杏李树干液流速率日变化均呈现昼高夜低规律,晴天液流速率高于阴天。在整个生长阶段,6月液流量达到最大。杏李树干液流与环境因子显著相关,受光照强度和空气温度的影响最大。[ Objective ] The purpose of this study is to explore the relationship between the change of the sap flow of Prunus domestica x armeniaca and the environmental factors and understand the law of water con- sumption of the tree body in order to provide the theoretical basis for the water management of Prunus domesti- ca x arraeniaca. [ Method] PS - TDP8 type heat dissipation type sap flow measurement system was used for continuous monitoring to analyze the influence of environmental factors on the flow rate. [ Result ] The diurnal changes of the stem sap of Prunus salicina × armeniaca during the growth all presented a typical single - peak curve, with higher value in daytime than nighttime. The sap flow rate was higher in sun shining day than that of cloudy day. The sap flow rate was not the same in different months. The lowest sap flow rate was in April, with the rate of 232.31 L. The highest sap flow rate was in June, the monthly liquid flow rate was 533.81L. In April, June and August, the sap flow rate of Prunus salicina x armeniaca was greatly correlated with air temperature, and the correlation coefficients were 0.831, 0.806 and 0. 846, respectively. In May and July, the sap flow rate of Prtmus salicina x arn^niaca was the greatly correlated with the light intensity, and the cor- relation coefficients were 0. 860, 0. 863, respectively. The regression equation coefficient R2 was about 0.8 from April to August. [ Conclusion] The diurnal changes of the stem sap of Prunus salicina x armeniaca during the growth all presented a typical single - peak curve, with higher value in daytime than in nighttime. The sap flow rate was higher than that of cloudy day. During the whole growth phase, the sap flow rate reached the maximum in June. The sap flow of Prunus salicina x armeniaca was significantly correlated with environmental factors, and was mostly affected by light intensity and air temperature.

关 键 词：杏李 树干 液流量 环境因子 

分 类 号：S662.2[农业科学—果树学]