Feature Analysis on the Evolvement of Meteorologic Elements During Wheat Gibberella Pathogen Formation Period in Hebei, Beijing and Tianjing

doi:10.7668/hbnxb.2007.S2.052

Abstract

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

CLC Number:

S435.12

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.

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