不同环境因子对黄连木1年生苗耗水规律的影响  

Effects of Different Environmental Factors on Water Consumption of One-year-old Pistacia chinensis Seedlings

作　　者：陈婧[1] 马履一[1,2] 段劼[2] 彭祚登[1] 贾黎明[1,2] 杨欣超[1] 杨腾[1] 

机构地区：[1]北京林业大学林学院,北京100083 [2]北京林业大学国家能源非粮生物质原料研发中心,北京100083

出　　处：《西北林学院学报》2014年第2期6-11,共6页Journal of Northwest Forestry University

基　　金：教育部博士点基金优先发展领域项目(20120014130001);林业公益性行业科研专项经费项目(201004021)

摘　　要：采用经典盆栽称重法,结合自动气象监控装置的24h连续观测数据,研究4种不同土壤含水量条件下,能源树种黄连木1年生苗单株的耗水规律以及其与环境因子的相关关系,分析不同环境因素对其耗水的影响。结果表明:不同土壤水分梯度下黄连木苗的耗水变化均呈现先上升后下降的趋势,耗水量从7月初开始逐渐上升,到8月份达到最高峰,9月份开始下降直至10月底试验结束;随着土壤含水量的降低,苗木的耗水量依次减少,各处理间差异显著;通过相关和回归分析结果表明,苗木耗水受环境因子综合影响,其与光照强度、空气温度、湿度等有着很好的相关性,相关程度大小依次为光照强度、温度、空气湿度,并以此建立环境参数预测苗木耗水量的优化模型。Classical pot culture method and 24-hours automatic datum monitoring were was used to study the water consumption law of one-year-old Pistacia chinensis seedlings, to analyze the relationship be- tween water consumption （WC） and environmental {actors under four different soil water conditions, and to examine the impacts of different environmental factors on water consumption ability. The results indica- ted that under different soil moisture levels,WC increased first, then decreased during the whole experi- ment： rising at the beginning of July, to the peak value during August, and decreasing from September till the end of the October. WC quantities demonstrated an ordinal decrease with the decrease of soil moisture content, and the differences were significant between different treatments. Correlation regression analysis demonstrated that WC was significantly correlated with environmental factors, and the correlation coeffi- cients was in the order of illumination intensity〉air temperature〉relative humidity. An optimized model was established to estimate the WC by environmental parameters.

关 键 词：黄连木 1年生苗 耗水规律 环境因子 

分 类 号：S718.43[农业科学—林学]