[Objective] We aimed to investigate the relationship between temperature and occurrence of Helicoverpa armigera (H0bner) in Shihezi Zong Chang. [Method] The data of occurrence of adult Helicoverpa armigera (Hubner...[Objective] We aimed to investigate the relationship between temperature and occurrence of Helicoverpa armigera (H0bner) in Shihezi Zong Chang. [Method] The data of occurrence of adult Helicoverpa armigera (Hubner) and temperature in 2007-2010 was analyzed for building the prediction model. [Result] The amount of overwintering generation of Helicoverpa armigera (Hubner) increased with the in- crease of temperature and its population dynamics showed a positive correlation with temperature. The amount of first and second generation of Helicoverpa armigera (Hubner) decreased with the increase of temperature and its population dynamics showed a negative correlation with temperature. [Conclusion] This research would provide a basis for the forecast and prevention of Helicoverpa armigera (Hubner) in North Xinjiang.展开更多
Field insect population survey indicated that the principal natural predation enemies of cotton bollworm ( Helicoverpa armigera Hubner ) were Eringonidium graminicola Sundevall, Adonia variegata Goeze, Nabis sinoferus...Field insect population survey indicated that the principal natural predation enemies of cotton bollworm ( Helicoverpa armigera Hubner ) were Eringonidium graminicola Sundevall, Adonia variegata Goeze, Nabis sinoferus Hsiao.The results from experiments showed that the amount of prey consumed of these principal natural enemies increased when the density of prey rised,and decreased when the density of natural enemies increased. The predation function response fitted Holling’s predation response equationⅡ,and could be fit with the Disk展开更多
文摘[Objective] We aimed to investigate the relationship between temperature and occurrence of Helicoverpa armigera (H0bner) in Shihezi Zong Chang. [Method] The data of occurrence of adult Helicoverpa armigera (Hubner) and temperature in 2007-2010 was analyzed for building the prediction model. [Result] The amount of overwintering generation of Helicoverpa armigera (Hubner) increased with the in- crease of temperature and its population dynamics showed a positive correlation with temperature. The amount of first and second generation of Helicoverpa armigera (Hubner) decreased with the increase of temperature and its population dynamics showed a negative correlation with temperature. [Conclusion] This research would provide a basis for the forecast and prevention of Helicoverpa armigera (Hubner) in North Xinjiang.
文摘Field insect population survey indicated that the principal natural predation enemies of cotton bollworm ( Helicoverpa armigera Hubner ) were Eringonidium graminicola Sundevall, Adonia variegata Goeze, Nabis sinoferus Hsiao.The results from experiments showed that the amount of prey consumed of these principal natural enemies increased when the density of prey rised,and decreased when the density of natural enemies increased. The predation function response fitted Holling’s predation response equationⅡ,and could be fit with the Disk