关键词: 猪, 猪, LXRα, RT-PCR, 系统发育分析

Abstract:

Using high temperature data from 1951 to 2000 in Shandong Province, The variation trend of average high temperature in Huimin, Jinan,Weifang and Yanzhou station are analyzed. The results show that, from 1951 to 2000, the variation features of the high temperature in Huimin, Jinan and Weifang decrease first and then increase. The average high temperature is 19.3 ℃ in 1951 and about 18.5 ℃ in 1965. In the 20 years from 1965 to 1985, the average high temperature is vibrating at 18.5℃. After 1985, the high temperature rises again slowly and reaches to 19.0℃. And the variation trend of Yanzhou station is gentle. The high temperature days of Jinan station in the four stations are most and reach at 781 days. And first-grade high temperature days is 584 days, second-grade days are185 days and third-grade days are 12 days. The first-grade high temperature days in Yan zhou station are more than other two grades. As for meteorology disaster risk, the Jinan station rows on top, and is at the highest risk; Weifang and Yanzhou row on second, are at moderate risk; Huimin station rows on third.