【摘 要】
：
在稻纵卷叶螟2、3龄幼虫高峰期和稻飞虱低龄若虫高峰期喷施氟腈·三唑磷1200mL/hm2、毒死蜱1500mL/hm2和氟虫腈750mL/hm2进行兼顾性防效试验,药后5d,对稻纵卷叶螟的防效分别
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在稻纵卷叶螟2、3龄幼虫高峰期和稻飞虱低龄若虫高峰期喷施氟腈·三唑磷1200mL/hm2、毒死蜱1500mL/hm2和氟虫腈750mL/hm2进行兼顾性防效试验,药后5d,对稻纵卷叶螟的防效分别为66.50%、54.81%、70.79%,保叶效果分别为61.91%、65.38%、49.52%;这3种药剂对褐飞虱、白背飞虱、灰飞虱均有一定的防效,毒死蜱兼顾性最强,药后30d对褐飞虱、白背飞虱、灰飞虱防效分别为87.75%、34.32%、76.03%,同时对黑肩绿盲蝽和蜘蛛的杀伤率也较高,分别达86.58%和68.99%。
The results of the two control trials showed that both flunitrifos and triazophos 1200mL / hm2, chlorpyrifos 1500mL / hm2 and fipronil 750mL / hm2 were applied at the peak of the second and third instar larvae of rice leaf roller. , Respectively. The control effects on C. medinalis were 66.50%, 54.81% and 70.79%, respectively. The leaf protection effects were 61.91%, 65.38% and 49.52%, respectively. , Laodelphax striatellus had certain control effect, and the most pestilent-resistant tick had the strongest compatibility. The control effects on BPH, BPPH and SBPH were 87.75%, 34.32% and 76.03% respectively at the 30th day after treatment, The killing rates of bugs and spiders were also higher, reaching 86.58% and 68.99% respectively.
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