摘要： 根据河北省、北京市、天津市22个代表站1960-2000年逐日平均气温、降雨量、相对湿度以及日照时数等资料,运用统计学方法,分析了京、津、冀地区小麦赤霉病菌原体形成期各相关气象因子的年际、年代际变化及空间分布。结果表明,日平均气温≥12℃日数大部地区呈弱增加趋势,降雨量和雨日呈减少趋势,中部以南地区的日照条件向降低小麦抗病能力的方向转化;贴近度分析表明,塘沽-天津-保定以南地区秋季小麦赤霉病菌原体形成期的气候条件是最适宜或适宜小麦赤霉病发生。
关键词:
小麦赤霉病,
菌原体,
形成期,
气象要素,
趋势系数
Abstract: Based on the daily mean data of air temperature,rainfall,relative humidity and sunshine duration of 22 stations from 1960 to 2000 in Hebei province,Beijing and Tianjin,the statistics method is used to analyze the interannual change,interdecadal variation and spatial distribution of the correlated meterological factors during wheat gibberella pathogen formation(WGPF)period.The results show that the days of mean daily air temperature ≥ 12℃ present weak increase trend in most of the study region,and the rainfall and the rain days present decrease trend.The change of sunshine duration lowers the wheat anti-disease ability in south of the central Hebei.The relevant degree indicates that climate conditions during the WGPF period are optimum or suitable for the occurrence of wheat gibberella in autumn in south Tanggu,Tianjin and Baoding area.
Key words:
Wheat gibberella,
Pathogen,
Formation period,
Meterological factor,
Trend coefficient
中图分类号:
袁淑杰, 梁平, 武文辉, 徐大红, 杨昌银, 韩俊玲, 李智慧. 冀、京、津产麦区小麦赤霉病菌原体形成期的气象要素演变特征与分析[J]. 华北农学报, 2007, 22(S2): 220-224. doi: 10.7668/hbnxb.2007.S2.052.
YUAN Shu-jie, LIANG Ping, WU Wen-hui, XU Da-hong, YANG Chang-yin, HAN Jun-ling, LI Zhi-hui. Feature Analysis on the Evolvement of Meteorologic Elements During Wheat Gibberella Pathogen Formation Period in Hebei, Beijing and Tianjing[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(S2): 220-224. doi: 10.7668/hbnxb.2007.S2.052.