湖南烟区烟蚜种群变动规律及其测报技术

On the Dynamics of Population of Tobacco Aphids and Its Prediction Techniques in Hunan Tobacco Region

根据在湖南烟区近10年的系统调查观察,了解了烟蚜的越冬动态、烟田内种群消长规律及数量的年际变化,分析了气象、品种、天敌等因子与烟蚜发生的关系,提出利用冬季气温预测迁飞蚜量(黄皿诱蚜量)、利用3～5月黄皿诱蚜量预测烟草移栽至现蕾期烟田百株蚜量及利用多元回归预测蚜量发生趋势等测报技术.

In the thesis, dynamics of overwinter, occurrence regulation of tobacco aphids and its interannual variation in the tobacco field were intrduced, according to data of tobacco aphids systematically investigated during recent 10 years in Hunan tobacco region. Relationship between occurrence of tobacco aphids and weather, varieties and natural enemies and so on were analysed. We bring out the prediction techniques of tobacco aphids which including the number of tobacco aphids re-migrated from other region based on the air temperature in winter（trapped aphids number/yellow plate）, the number of tobacco aphids for 100 tabacco plants based on the aphids number trapped by the yellow plate during the period of transplanting and floral initiation of tobacco from March to May in a year in tobacco field and occurrence trends of tobacco aphids with multiple-factor regression and so on.