摘要
通过对陇东地区越夏小麦条锈菌等级与夏季气象要素相关分析得出,越夏小麦条锈菌等级与气温、降水、日照和空气相对湿度的关系密切。7月下旬和8月下旬的旬平均气温、7月中下旬和8月中旬降水之和、7月下旬和8月下旬日照、7月下旬和8月下旬相对湿度是影响越夏小麦条锈菌的关键因子,据此建立了越夏锈菌等级预报方程(p<0.01);利用此方程对陇东地区2006年和2007年越夏小麦条锈菌等级进行预报,结果与市植保站当年实际观测调查结果吻合,说明模型可用于预报服务。
The correlation between the occurrence grade of the over-summer stripe rust of wheat and the key meteorological factors in the East of Gansu Province was analyzed. The results showed that the occurrence grade of the over-summer stripe rust of wheat was related to the temperature, precipitation, sunshine and relative humidity. The temperature in August, the precipitation in July and the relative humidity in August had significant impacts on the occurrence grade of the over-summer stripe rust of wheat. The ten days average temperature in the last ten day of July and the last ten days of August, the total precipitation in the last ten day of July and the last ten days of August, and the relative humidity in the last ten day of July and the last ten days of August were the key factors and critical period which affected the occurrence grade of the over-summer stripe rust of wheat. Based on the above results, a prediction equation for the occurrence grade of the over-summer stripe rust of wheat was estab- lished. The occurrence grade of the over-summer stripe rust of wheat for 2006 and 2007 was forecasted and the results was well accorded to the in- vestigation results by the local plant protection station.
出处
《中国农业气象》
CSCD
2008年第4期511-513,共3页
Chinese Journal of Agrometeorology
基金
2008年度中国气象局基建和事业费项目“中国主要农作物病虫害气象等级预报业务系统建设”
关键词
越夏小麦条锈菌
等级预报
关键气象要素
Over-summer stripe rust of wheat
Grade foreast
Key meteorological factor
