欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2005, Vol. ›› Issue (9): 1021-1024.

• 研究报告 • 上一篇    下一篇

广州地区蔬菜田土壤温度变化特征及其预报模型研究

杜尧东, 刘锦銮, 何健   

  1. 广东省气候与农业气象中心, 广州, 510080
  • 收稿日期:2004-11-23 修回日期:2004-12-21 出版日期:2005-09-10
  • 通讯作者: 杜尧东,男,1964年生,博士,副研究员.主要从事应用气象和农业生态研究,发表论文60余篇.E-mail:yddu@grmc.gov.cn
  • 基金资助:
    广东省科技攻关项目(2001B30902);广东省气象局科研攻关资助项目(200202)

Characteristics of soil temperature dynamics in vegetable field and its forecasting model in Guangzhou

DU Yaodong, LIU Jinluan, HE Jian   

  1. Climatic and Agrometeorological Center of Guangdong Province, Guangzhou 510080, China
  • Received:2004-11-23 Revised:2004-12-21 Online:2005-09-10

摘要: 根据蔬菜田土壤温度以及附近气象站气温观测资料,对广州地区蔬菜田土壤温度的变化特征及其预报模型进行了研究。结果表明,与气温相比,蔬菜田土壤温度振幅较小,位相落后,而且日变化位相落后较年变化明显。随深度增加,土壤温度日振幅逐渐减小,位相落后也愈加明显。晴好条件下的土壤温度日变化大于阴天。土壤温度与气温存在着显著的线性相关关系。以气温为自变量建立的各深度土壤温度预报方程,其平均绝对误差大部分在0.5℃以内,平均相对误差大部分在10%以内,具有较高的精度。

关键词: 碱性磷酸酶, 琥珀酸脱氢酶, 菌丝, 菌根侵染, 生长

Abstract: According to the observing data of soil temperature in vegetable field and nearby air temperature,dynamic of soil temperature in vegetable field and its forecasting model were studied in Guangzhou.The results showed that the amplitude of soil temperature in vegetable field were small and the phase lagged behind air temperature.The phase lag of daily change was more obvious than that of annual change.Daily amplitude of soil temperature gradually decreased and the phase lagged more obviously with the increase of soil depth.Daily change of soil temperature under clear weather was greater than that under overcast weather.Soil temperature had distinct linear correlations with air temperature.Forecasting formulae of soil in different depths established by air temperature had higher precisions,with their average absolute and relative errors mostly lower than 0.5 ℃ and 10% respectively.

Key words: Alkaline phosphatase(ALP), Succinate dehydrogenase(SDH), Hyphae, Mycorrhizal colonization, Growth

中图分类号: