中国农业气象

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库尔勒香梨树干阳阴面形成层温度的对比分析

巴特尔·巴克;海利力·库尔班;茹鲜·木沙;郑晓辉;   

  1. 新疆农业大学草业与环境科学学院;新疆农业大学林学与园艺学院;
  • 出版日期:2011-04-10 发布日期:2011-04-10
  • 基金资助:
    新疆维吾尔自治区自然科学基金资助项目(200821171);; 新疆维吾尔自治区高等学校科学研究计划(XJEDU2008S23)

Comparative Study of Cambium Temperature of North-unexposed and South-exposed Bark of Korla Fragrant Pear Tree

BATUR Bake1,HALIL Kurban2,RUXIAN Musa1,ZHENG Xiao-hui1(1.College of Grassland and Environmental Science,Xinjiang Agricultural University,Urumqi 830052,China;2.College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi 830052)   

  • Online:2011-04-10 Published:2011-04-10

摘要: 采用植物体内温度监测系统,监测了库尔勒香梨树干形成层的温度和主要气象因子,分析了树干阳阴面形成层温度变化特性并探讨了融冻和日灼发生的可能性。结果表明:树干阳阴面形成层温度变化有季节特性,阳面温度变化比阴面强烈,尤其是冬季更加明显;夏季阳阴面温度差异较小;白天树干阳面形成层温度高于阴面,夜间阴面温度略高于阳面;阳面日较差最高值出现在冬季,达33.14℃,比阴面日较差高17.14℃;越冬期间树干阳面日最低温度低于阴面,最高温度高于阴面,说明树干阳面比阴面更容易受到低温冻害和日灼危害;夏季树干阳面形成层日最高温度高于阴面且大于40℃高温持续日数在20d以上,说明树干阳面形成层比阴面更容易受到日灼的危害。

关键词: 库尔勒香梨, 树干阳阴面, 形成层温度

Abstract: A monitoring system was used to measure and record the cambium temperature of north-unexposed(NU) and south-exposed(SE) bark of Korla fragrant pear tree and the main weather factors across different seasons in Korla,Xinjiang,China.The variations of the cambium temperature of NU and SE barks and the possibility of thawing-freezing and sunscald damage of the two sides were analyzed.The results showed that the cambium temperature variations of NU and SE bark were different in each season.Cambium temperature fluctuations of SE bark were much bigger than that of NU bark,especially in winter.Cambium temperature difference between the NU and the SE bark were smaller in summer than in other seasons.Cambium temperature of SE bark was clearly higher than that of NU bark during daytime,but was slightly lower at night.The highest cambium temperature fluctuations of SE bark was 33.14℃,which occurred in winter,it was 17.14℃ higher than that of the NU bark.The minimum cambium temperature of SE bark was lower than that of NU,but the maximum cambium temperature of SE bark was higher than that of NU.Hence,SE bark was more likely to be damaged by freezing injury and sunscald during winter.The maximum cambium temperature of SE bark was higher than NU bark in summer,and the duration of higher than temperature 40°C lasted more than 20 d.Hence,SE bark was more likely to be damaged by sunburn in summer.

Key words: Korla fragrant pear, Korla fragrant pear, North-unexposed and south-exposed bark, Cambium temperature