Analysis of Major Pests Occurrence Dynamics in Different Ecological Tobacco Production Areas of Hunan
To analyze the difference of major tobacco pests occurrence dynamics in different ecological areas of Hunan,for guiding pest control of one area on the basis of another one,this study surveyed the pests occurrence in the central-south of Hunan(Hengnan of Hengyang) and northwest of Hunan(Cili of Zhangjiajie) from 2014 to 2016.Results showed that the migration times of Myzus persicae,Agrotis ypsilon,Heliothis assulta and Spodoptera litura in central-south of Hunan were respectively from early February to mid-May,mid-February to the end of April,the end of March to early May and mid-April to mid-June,the occurrence times were respectively from early April to late May,late March to mid-April,late April to late May and mid-May to late June.The migration and occurrence time in northwest of Hunan postponed about 15-30 d compared with central-south of Hunan.Also,the annual cumulative lured amount of Myzus persicae in central-south of Hunan was significantly lower than northwest of Hunan,but the annual cumulative lured amounts of Heliothis assulta and Spodoptera litura were significantly higher than northwest of Hunan.In most years,the biggest occurrence amounts of Myzus persicae and Heliothis assulta in central-south of Hunan were significantly higher than northwest of Hunan.The correlation of pest lured amount and occurrence amount in different areas and years was not significant.
tobacco production areainsect pestoccurrence dynamicsmigrationoccurrence amountHunan
国家科技期刊平台
NSTL
万方数据
维普
