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
【目的】开展玉米螟田间药效研究及经济效益评价,为新疆荒漠绿洲生态区玉米螟的科学防治提供指导。【方法】对不同药剂的平均防效、挽回产量情况、用药成本、投入产出比和经济效益等进行比较分析,提出新疆荒漠绿洲生态区玉米螟田间防治...【目的】开展玉米螟田间药效研究及经济效益评价,为新疆荒漠绿洲生态区玉米螟的科学防治提供指导。【方法】对不同药剂的平均防效、挽回产量情况、用药成本、投入产出比和经济效益等进行比较分析,提出新疆荒漠绿洲生态区玉米螟田间防治的最佳使用药剂及用药量。【结果】20%氯虫苯甲酰胺(康宽)喷施4m L/667m^2的防效、可挽回产量、纯增效益及投入产出比均最高,分别达95.29%、201.13 kg/667m^2、355.63元/667m^2和1∶56.57。其次是45%甲维·虱螨脲(普克猛)水分散粒剂,喷施10 g/667m^2的防效、可挽回产量、纯增效益及投入产出比分别为92.10%、192.50 kg/667m^2、336.50元/667m^2和1∶34.65。再次是阿维·氯苯酰(亮泰),喷施30 m L/667m^2的防效、可挽回产量、纯增效益则为92.60%、193.69 kg/667m^2和330.64元/667m^2。此外,撒施3%辛硫磷(掌声)、1%联苯·噻虫胺(家保福)、0.4%氯虫苯甲酰胺(科德抗)等颗粒剂则对玉米螟的防治效果较低,依次为60.39%、70.25%和79.28%。【结论】生产上玉米螟防治最佳使用的药剂种类及用药量为:20%氯虫苯甲酰胺(康宽)4 m L/667m^2、45%甲维·虱螨脲(普克猛)水分散粒剂10 g/667m^2、阿维·氯苯酰(亮泰)30 m L/667m^2、24%甲氧虫酰肼(雷通)40 m L/667m^2、氯虫·高氯氟(福奇)12.5m L/667m^2、氯虫·噻虫嗪(福戈)8 g/667m^2、22%噻虫·高氯氟(阿立卡)20 m L/667m^2。展开更多
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
文摘【目的】开展玉米螟田间药效研究及经济效益评价,为新疆荒漠绿洲生态区玉米螟的科学防治提供指导。【方法】对不同药剂的平均防效、挽回产量情况、用药成本、投入产出比和经济效益等进行比较分析,提出新疆荒漠绿洲生态区玉米螟田间防治的最佳使用药剂及用药量。【结果】20%氯虫苯甲酰胺(康宽)喷施4m L/667m^2的防效、可挽回产量、纯增效益及投入产出比均最高,分别达95.29%、201.13 kg/667m^2、355.63元/667m^2和1∶56.57。其次是45%甲维·虱螨脲(普克猛)水分散粒剂,喷施10 g/667m^2的防效、可挽回产量、纯增效益及投入产出比分别为92.10%、192.50 kg/667m^2、336.50元/667m^2和1∶34.65。再次是阿维·氯苯酰(亮泰),喷施30 m L/667m^2的防效、可挽回产量、纯增效益则为92.60%、193.69 kg/667m^2和330.64元/667m^2。此外,撒施3%辛硫磷(掌声)、1%联苯·噻虫胺(家保福)、0.4%氯虫苯甲酰胺(科德抗)等颗粒剂则对玉米螟的防治效果较低,依次为60.39%、70.25%和79.28%。【结论】生产上玉米螟防治最佳使用的药剂种类及用药量为:20%氯虫苯甲酰胺(康宽)4 m L/667m^2、45%甲维·虱螨脲(普克猛)水分散粒剂10 g/667m^2、阿维·氯苯酰(亮泰)30 m L/667m^2、24%甲氧虫酰肼(雷通)40 m L/667m^2、氯虫·高氯氟(福奇)12.5m L/667m^2、氯虫·噻虫嗪(福戈)8 g/667m^2、22%噻虫·高氯氟(阿立卡)20 m L/667m^2。
