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当前位置: 首页 > 文章 > 基于称重式蒸渗仪的温室秋茬礼品西瓜蒸散特征及影响因子 节水灌溉 2018 (12) 8-11
Position: Home > Articles > Evapotranspiration Characteristics and Influence Factors of Autumn Mini-watermelon in Greenhouse on the Basis of Weighing Lysimemer Water Saving Irrigation 2018 (12) 8-11

基于称重式蒸渗仪的温室秋茬礼品西瓜蒸散特征及影响因子

作  者：
杨宜;李银坤;陶虹蓉;郭文忠;李海平;李灵芝
单  位：
北京农业智能装备技术研究中心;山西农业大学园艺学院;农业部都市农业(华北)重点实验室
关键词：
蒸渗仪;温室;礼品西瓜;蒸散量;环境因子
摘  要：
以"京秀"西瓜为试材,基于称重式蒸渗仪研究了温室秋茬礼品西瓜蒸散规律及其与环境因子的相关性,旨在为温室秋茬西瓜精准灌溉提供依据。结果表明:礼品西瓜全生育期蒸散量为114.79 mm,日均蒸散量为1.11 mm/d。礼品西瓜的需水规律表现为前期小-中期大-后期小的变化规律。其中:苗期、伸蔓期、开花坐果期、果实膨大期和成熟期的日蒸散强度分别为:1.04、1.20、1.34、1.08、0.81 mm/d。环境因子显著影响秋茬礼品西瓜的蒸散量变化,其中光合有效辐射、太阳辐射、饱和差、最高温度、平均温度、最低温度均与西瓜日蒸散量呈极显著正相关关系,相关系数依次为0.813、0.777、0.742、0.618、0.434和0.290。而相对湿度与西瓜日蒸散量呈极显著负相关关系,相关系数为-0.517。建立了基于光合有效辐射、太阳辐射和相对湿度的秋茬礼品西瓜日蒸散量经验模型,经检验R2达0.706,可对秋茬礼品西瓜的日蒸散量进行估算。
译  名：
Evapotranspiration Characteristics and Influence Factors of Autumn Mini-watermelon in Greenhouse on the Basis of Weighing Lysimemer
作  者：
YANG Yi;LI Yin-kun;TAO Hong-rong;GUO Wen-zhong;Ll Hai-ping;Ll Ling-zhi;National Research Center of Intelligent Equipment for Agriculture,Beijing;College of Horticulture,Shanxi Agricultural University;Key Laboratory of Urban Agriculture (North China) ,Ministry of Agriculture;
单  位：
North China
关键词：
Lysimeter;;greenhouse;;mini-watermelon;;evapotranspiration;;environmental factors
摘  要：
Using"Jingxiu"watermelon as the test material,based on the weighing lysimeter,the evapotranspiration law of the autumn mini-watermelon in the greenhouse and its correlation with the environmental factors were studied. The aim was to provide the basis for precision irrigation of greenhouse autumn watermelon. The results show that the evapotranspiration of mini-watermelon is 114. 79 mm in the whole growth period,and the average daily evapotranspiration is 1.11 mm/d. The autumn mini-watermelon in the greenhouse shows a small change in the early stage,medium to large stage,and late stage. Among them,the daily evapotranspiration at the seedling stage,vine extension stage,flowering fruit setting stage,fruit expansion stage and maturity stage are 1. 04,1. 20,1. 34,1. 08,0. 81 mm/d,respectively. The environmental factors significantly affect the change of evapotranspiration of the watermelon in the autumn harvest. Photosynthetically active radiation,solar radiation,saturation difference,maximum temperature,average temperature,and minimum temperature are all significantly positively correlated with the daily evapotranspiration of watermelon. The correlation coefficients are 0.813,0.777,0.742,0.618,0.434,and0.290,respectively. The relative humidity is significantly negatively correlated with the daily evapotranspiration of watermelon,with a correlation coefficient of-0.517. An empirical model for the daily evapotranspiration of watermelon seeds based on photosynthetically active radiation,solar radiation,and relative humidity is established. After an R2 of 0.706 is verified,the daily evapotranspiration of the autumn mini-watermelon in the greenhouse can be estimated.

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