几种药剂混用防治灰飞虱药效试验初报

Preliminary Result of Efficacy for Several Kinds of Insecticides to Control Laodelphax striatellus (Fallen)

田间试验结果表明,每667m2用5%氟虫腈20mL与40.7%毒死蜱60mL、25g/L高效氯氟氰菊酯EC40mL混配,对灰飞虱药后3d防效分别为89.94%、87.79%;药后7d防效分别达97.83%、96.15%;药后15d防效仍高达94.76%、93.01%,具有速效性好、持效期长的特点。