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2013~2014年,采用田间小区试验评价了1.5%氯虫·噻虫嗪GR、0.4%氯虫苯甲酰胺GR和25%噻虫嗪WG撒施处理对水稻二化螟、稻纵卷叶螟和稻飞虱的防治效果。结果表明:水稻移栽后5~10 d,1.5%氯虫·噻虫嗪GR 90.0~112.5 g/hm~2撒施1次,可有效控制水稻二化螟、稻纵卷叶螟和稻飞虱危害;0.4%氯虫苯甲酰胺GR 42.0 g/hm~2撒施1次,对二化螟及稻纵卷叶螟防效较高,但对稻飞虱防效较差;25%噻虫嗪WG 37.5 g/hm~2撒施1次,对稻飞虱防效较高,但对二化螟和稻纵卷叶螟基本无效。因此,建议在水稻生产实践中,于移栽后5~10 d撒施1次1.5%氯虫·噻虫嗪GR 90.0~112.5 g/hm~2,防治水稻生长前期的二化螟、稻纵卷叶螟及稻飞虱;间隔40 d再补施1次,以有效控制水稻生长后期的上述害虫危害。
From 2013 to 2014, field plot experiments were conducted to evaluate the effects of WG1.5, WG3.0, and RSZ2.0 on soil resistance to rice stem borer (Chilo suppressalis), rice leaf roller And planthopper control effect. The results showed that the application of 1.5% chloramphenicol thiamethoxam GR 90.0 ~ 112.5 g / hm ~ 2 once 5 ~ 10 days after transplanting rice could control rice stem borer, rice leaf roller and rice fly The results showed that 0.4% chlorantraniliprole GR 42.0 g / hm ~ 2 was applied once to control the rice stem borer and rice leaf roller, but its control effect on planthoppers was poor. The 25% thiophene Insecticide WG 37.5 g / hm ~ 2 was applied once to control planthopper, but it was not effective on the rice stem borer and rice leaf roller. Therefore, it is recommended to apply 1.5% Cloth, Thiamethoxam GR 90.0 ~ 112.5 g / hm ~ 2 once a day for 5 ~ 10 d after transplanting in rice production practice to prevent and control the rice stem borer Leafroller and planthopper; 40 d intervals to replenish once, in order to effectively control the pests in late rice growth hazards.