40%氯虫·噻虫嗪不同用量对单季稻前期控虫效果试验

Control Effects of 40% Chlorantraniliprole·thiamethoxam of Different Dosages on Single Cropping Rice in Prophase

对40%氯虫·噻虫嗪不同用量对单季稻前期控虫效果及单季稻促苗分蘖的影响进行了试验。结果表明，40%氯虫·噻虫嗪对单季稻分蘖有明显的促进作用，具有较好安全性，但在秧田使用40%氯虫·噻虫嗪WG每667 m2用量为60 g时对分蘖有一定抑制作用；40%氯虫·噻虫嗪WG对稻蓟马、稻纵卷叶螟、稻飞虱均有较好的防治效果，随着用药量的增加，防治效果也相应提高。根据试验结果，建议单季稻每667 m2秧田40%氯虫·噻虫嗪的用量为40~50 g。

A study was carried out about diffenrent amount of 40% chlorantraniliprole·thiamethoxam on controlling pest and seedling tillering in single cropping rice. The results showed that 40%chlorantraniliprole·thiamethoxam will promote seedling tillering of single cropping rice. But when 40%chlorantraniliprole·thiamethoxam WG is more than 60 g/667 m2, it has certain inhibitory effect on tiller-ing. 40% chlorantraniliprole·thiamethoxam has relatively control and prevention effect on thrips oryzae, cnaphalocrocis medinalis and rice planthopper,and with the increase of dosage,the effect will be correspondingly improved. Based on the experimental results, it is suggested that the suitable amount of 40%chlorantraniliprole·thiamethoxam WG is 40~50 g/667 m2 in rice nursery.