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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。
The effects of different dosage of 40% chloroquine and thiamethoxam on the prophase pest control of single cropping rice and the tillering of single cropping rice were studied. The results showed that 40% chlordiazepoxide and thiamethoxam could promote the tillering of single cropping rice significantly and had good safety. However, when using 40% chlorantranilon and thiamethoxam WG in the seedling with the dosage of 60 g per 667 m2, 40% chloroquine and thiamethoxam WG had better control effects on rice thrips, rice leaf roller and planthopper. As the dosage increased, the control effect increased accordingly. According to the test results, it is suggested that the application rate of 40% chlorine thiamethoxam per unit area of 667 m2 for single cropping rice is 40 ~ 50 g.