Study on Occurrence and Dynamics of Main Tobacco Pests in Kunming City
The Myzus persicae,Helicoverpa assulta,Scarab,Agrotis ypsilon of tobacco was observed in the forecasting system of tobacco diseases and pests in Kunming,and the occurrence trends and characteristics of the four kinds of tobacco pests were analyzed.The results showed in systematic observation nursery,the occurrence of the aphid was more serious in 2013,and the highest incidence was 26.53 ％,and aphid quantity index was 12.19,and its harm was relatively slight in 2011 and 2012.The occurrences of tobacco Helicoverpa assulta,Scarab,Agrotis ypsilon were relatively slight in 2011-2013.In the Kunming pest census points,the occurrences were moderate degree of four kinds of pests in 2011,and four kinds of pests were significantly decreased in 2012 and 2013.
NETL
NSTL
万方数据
维普
