滴灌条件下核桃树茎流变化规律研究  

Stem Sap Flow Rate Change Rule of Walnut under Drip Irrigation

作　　者：张清林[1] 马英杰[1] 洪明[1] 曾冬梅 郑冰[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052 [2]新疆水利厅牧区水利规划总站,乌鲁木齐830000

出　　处：《灌溉排水学报》2012年第1期62-65,共4页Journal of Irrigation and Drainage

基　　金：国家科技支撑计划项目(2007BAD38B02;2007BAD38B09);新疆重大专项(200731136-5);新疆水利水电工程重大学科基金项目(XJZDXK-2002-10-05);新疆科技支疆计划项目(200991237)

摘　　要：通过田间试验,利用热扩散探针法研究了滴灌条件下核桃树茎流速率变化规律及其与气象因子间的关系。结果表明,核桃树茎流速率在晴天条件下日变化呈单峰曲线变化,先增大后减小,阴天条件下核桃树茎流速率表现为多峰曲线变化趋势;核桃树茎流速率与太阳辐射、大气温度和风速呈正相关关系,与大气相对湿度呈负相关关系。通径分析表明,对核桃树茎流速率影响最大的是大气温度,其次是风速、大气相对湿度、太阳辐射,建立了核桃树茎流速率与气象因子之间的回归方程。Through field experiment,using thermal diffusion probe method to study the drip conditions for stem sap flow rate change rule and the relationship between and meteorological factor,the result shows that the stem sap flow rate in the sunny weather under the condition of daily variation in the single-peak curve changes,first increases,then decreases,cloudy conditions for stem sap flow rate for peak performance curves changing trend;Walnut trees s stem sap flow rate and solar radiation,atmospheric temperature and wind speed are positively related,and atmospheric relative humidity is inversely related,path analysis results show that the walnut trees stem sap flow rate is the greatest impact atmospheric temperature,followed by wind speed,air relative humidity,solar radiation,establishes the walnut trees stem sap flow rate regression equation between meteorological factors.

关 键 词：滴灌 核桃 茎流速率 气象因子 

分 类 号：S664.1[农业科学—果树学] S275.6[农业科学—园艺学]