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

摘要

70％ Thiamethoxam ZF was selected and applied in the soil for controlling Ceratovacuna lanigera Zehntner and Baliathrips serratus Kobus.The results showed that 70％ Thiamethoxam ZF had good a control effect on C.lanigera and B.serratus.It was a new ideal pesticide with characteristics of sustained-release,long-lasting and low-toxin for controlling C.lanigera and B.serratus,and should be applied widely in the sugarcane planting area.The optimum dosage of 70％ Thiamethoxam ZF was 450 g/hm2 (effective ingredients 315 g).70％ Thiamethoxam ZF (dosage per hm2) mixed with the regular fertilizer (dosage per hm2) should be applied to the sugarcane planting and management one-time between February and June.The control effect for C.lanigera and B.serratus could be above 98.4％ and 82.9％ respectively.The real yield and sugar content increased bv more than 34 290 kg/hm2 and 6.8％ than that in the blank control area respectively.%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/hm2(有效成分315 g),可在2～6月,按hm2用药量与hm2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/hm2和6.8％以上.