25%阿克泰(Thiamethoxam)可分散性粒剂防治烟粉虱试验初报

A preliminary study on controlling Bemisia tabaci with 25% thiamethoxam WG

采用25％阿克泰（Thiamethoxam）可分散性粒剂4000～8000倍液进行移栽后喷雾和采用阿克泰WG2000～4000倍液进行移栽前苗期灌根处理，对番茄烟粉虱的防治效果均明显好于对照药剂，表明阿克泰WG对烟粉虱具有较高活性。试验结果表明，阿克泰WG对烟粉虱的若虫也具有较好的杀伤效果。施用阿克泰WG对番茄植株安全。

The experiments of controlling B. tabac/on tomatoes were carried out by post-transplanting spray of 25% thiamethoxam WG solution upon tomato plants and by pre-transplanting application of 25 % thiamthoxam WG solution to tomato plants and their roots. The results showed that both post-transplanting spray of 25 % thiamethoxam WG 4 000-8 000-fold solution upon the plants and pre-transplanting application of 25 % thiamethoxam WG 2 000- 4 000-fold solution to the plants and their roots could have significantly better control effects on B. tabac/than the control insecticides, which indicated that thiamethoxam WG has quite a high activity on B. tabace. The results also showed that applying thiamethoxam WG could effectively control the nymphae of B. tabaci and be safe for tomato plants.