The Effects Of Climate Changes On The Occurrence Of Crop Pests In Changyi City

Climate change will make a significant impact on agricultural production. In the past century, the global climate and environment changed very much, global warming as the main feature. In today’s context of climate change, we focus the research point on Changyi which was located in northwestern of Shandong peninsula, to investigate the relationship between the climate of Shandong Province monsoon warm temperate pest-humid continental climate zone and pests and diseases, research major climatic factors influence the development of their occurrence, the main findings are as follows: 1. Climate change dynamically of Changyi areaChangyi located in northeastern Shandong province, is a temperate continental climate. Between mid-2001-2010, the annual average temperature Changyi area normal annual precipitation and climate fluctuations, but the difference between volatile. 2. The pests dynamic and diseases of Changyi areaCorn and wheat was the main crops in Changyi region, accounting for 31.7% and 31.1% of the total crop acreage, respectively.Corn pests: corn leaf blight and size spot disease was the main disease of corn occurred in here. Between the year 2001 and 2010 in Changyi region, only the area of size spot disease has a tendency to increase, the extent of the occurrence of other diseases occurrence area trend is not obvious. 3. The dynamic relationship between climate change and pestsCorn pest: the average temperature of November has a negative effect on the extent of the occurrence of corn pests. The extent of the occurrence of corn borer has a significant positive correlation with the temperature of November, December and the average temperature of the whole year, but the incidence area has little correlation with meteorological factors.Wheat diseases: the average temperature of May and August has a significant negative correlation with the area of disease, the average temperature of November has a significant positive correlation with the degree of pests occurrence. The relationships between other meteorological factors and wheat diseases were not significant. The incidence of powdery mildew in wheat area has a significant negative correlation with the average temperature of May and August, but the correlation between the extent of occurrence and meteorological factors were not significant.