为防治玉米草地贪夜蛾,开展了6%乙基多杀菌素悬浮剂、20%多杀霉素悬浮剂、24千亿PIB/mL甘蓝夜蛾核型多角体病毒悬浮剂、12千亿孢子/mL短稳杆菌悬浮剂、24 IU/mg苏云金杆菌可湿性粉剂、金龟子绿僵菌4.8千亿孢子等生物药剂大田药效试验。...为防治玉米草地贪夜蛾,开展了6%乙基多杀菌素悬浮剂、20%多杀霉素悬浮剂、24千亿PIB/mL甘蓝夜蛾核型多角体病毒悬浮剂、12千亿孢子/mL短稳杆菌悬浮剂、24 IU/mg苏云金杆菌可湿性粉剂、金龟子绿僵菌4.8千亿孢子等生物药剂大田药效试验。结果表明,施药后5 d,以亩用100 mL 20%多杀霉素悬浮剂防效最佳为91.5%;亩用50 mL甘蓝夜蛾核型多角体病毒悬浮剂24千亿PIB防效次之为74.78%。施药后10 d,以亩用100 mL 20%多杀霉素悬浮剂防效最佳为80.77%;亩用50 mL 6%乙基多杀菌素悬浮剂防效次之为56.12%。综合来看,多杀霉素悬浮剂防治草地贪夜蛾幼虫效果明显,具有良好的速效性和持效性;甘蓝夜蛾核型多角体病毒悬浮剂也具有良好的速效性,建议交替使用。展开更多
Three characteristic points in the deformation history of a fractured tensile specimen are selected tocalculate two values of n( n1 and n2 ) to represent the hardening ability of material during the homogeneous plas-t...Three characteristic points in the deformation history of a fractured tensile specimen are selected tocalculate two values of n( n1 and n2 ) to represent the hardening ability of material during the homogeneous plas-tic deformation and the following large plastic deformation. Experimental results obtained with mild streel andred copper show that n determined using the three-point method proposed is better to describe the hardening a-bility of material. It is therefore concluded that three-point method can be used to describe the hardening prop-erty of material during both homogeneous deformation and large plastic deformation.展开更多
文摘为防治玉米草地贪夜蛾,开展了6%乙基多杀菌素悬浮剂、20%多杀霉素悬浮剂、24千亿PIB/mL甘蓝夜蛾核型多角体病毒悬浮剂、12千亿孢子/mL短稳杆菌悬浮剂、24 IU/mg苏云金杆菌可湿性粉剂、金龟子绿僵菌4.8千亿孢子等生物药剂大田药效试验。结果表明,施药后5 d,以亩用100 mL 20%多杀霉素悬浮剂防效最佳为91.5%;亩用50 mL甘蓝夜蛾核型多角体病毒悬浮剂24千亿PIB防效次之为74.78%。施药后10 d,以亩用100 mL 20%多杀霉素悬浮剂防效最佳为80.77%;亩用50 mL 6%乙基多杀菌素悬浮剂防效次之为56.12%。综合来看,多杀霉素悬浮剂防治草地贪夜蛾幼虫效果明显,具有良好的速效性和持效性;甘蓝夜蛾核型多角体病毒悬浮剂也具有良好的速效性,建议交替使用。
文摘Three characteristic points in the deformation history of a fractured tensile specimen are selected tocalculate two values of n( n1 and n2 ) to represent the hardening ability of material during the homogeneous plas-tic deformation and the following large plastic deformation. Experimental results obtained with mild streel andred copper show that n determined using the three-point method proposed is better to describe the hardening a-bility of material. It is therefore concluded that three-point method can be used to describe the hardening prop-erty of material during both homogeneous deformation and large plastic deformation.
