Control Effect Evaluation of 70% Thiamethoxam ZF against Ceratovacuna lanigera Zehntner and Baliathrips serratus Kobus on Sugarcane

[Objective] The paper was to provide scientific basis for popularization and application of 70% Thiamethoxam ZF. [Method] 70% Thiamethoxam ZF was selected and applied in the soil for controlling Ceratovacuna lanigera Zehntner and Baliathrips serratus Kobus. [ Result ] 70% Thiamethoxam ZF had good con-rol effect against C. lanigera and B. serratus. The optimum dosage of 70% Thiamethoxam ZF was 450 g/hm^2 （effective ingredients 315 g）. 70% Thiamethoxam ZF （ dosage per hm^2 ） mixed with the regular fertilizer （ dosage per hm^2 ） should be applied together in sugarcane planting and management from February to June. The control effects against C. lanigera and B. serratus were above 98.4% and 82.9% respectively. The actual yield and sugar content were increased by more than 34 290 kg/hm^2 and 6.8% respectively compared to blank control. [ Conclusion] 70% Thiamethoxam ZF was a new ideal pesticide with characteristics of sustained- release, long-lasting and low-toxic for controlling C. lanigera and B. serratus, and should be applied widely in the sugarcane planting area.

70%噻虫嗪种子处理可分散粉剂对甘蔗绵蚜和蓟马防控效果评价

选用70%噻虫嗪种子处理可分散粉剂根施进行防控甘蔗绵蚜和蓟马试验。结果表明:70%噻虫嗪种子处理可分散粉剂对甘蔗绵蚜和蓟马均具有良好的防控效果,是防控甘蔗绵蚜和蓟马理想的缓释长效低毒新药剂,可在蔗区大面积推广应用。70%噻虫嗪种子处理可分散粉剂最适宜用量为450 g/hm^2(有效成分315 g),可在2~6月,按hm^2用药量与hm^2施肥量混匀一次性施用,对甘蔗绵蚜和蓟马的防效分别达98.4%和82.9%以上。甘蔗实测产量和糖分分别较对照增加34 290 kg/hm^2和6.8%以上。

70%噻虫嗪种子处理可分散粉剂防治油菜黄条跳甲药效试验

以70%噻虫嗪种子处理可分散粉剂为试材,每100kg种子用药量分别为140g、280g、560g、840g(有效成分量),用4个供试剂量防治油菜黄条跳甲,防治效果为74.7%～79.3%,对照药剂60%高巧悬浮种衣剂防效为76.2%。对校正防效进行方差分析后表明,70%噻虫嗪种子处理可分散粉剂4个供试剂量之间无任何差异,与对照药剂60%高巧悬浮种衣剂之间也无任何差异。考虑防治成本,70%噻虫嗪种子处理可分散粉剂防治油菜田黄条跳甲推荐使用剂量为100kg种子140g。