1964—65年高粮蚜在辽南猖獗为害。1966年采用乐果滴裤方法进行试验并推广,效果达到98—100％。 一、方法 将40％乐果乳剂稀释成100、50倍液,用小壶或小口瓶将乐果稀释液,滴入高粱最下的两片绿叶的叶裤内(这两片叶子分布高粱两侧,比滴其它叶裤效果好)。滴药时轻拉叶片,使叶裤张开,滴入1—2滴。每株高粱约用稀释液2毫升。每亩用原药1两左右。 Aphids in 1964-65 were rampant in southern Liaoning. In 1966 the use of music drop pants method to test and promote the effect of 98-100%. A method of 40% dimethoate emulsion diluted to 100,50 times, with a small pot or small mouth bottle of dimethoate, sorghum into the bottom two green leaves leaf pants (the two leaves distribution sorghum two Side, than the other leaf pants effect is good). Slightly pull the leaves when the drops, so leaves open pants, drops 1-2 drops. Sorghum about each dilution 2ml. The original drug per acre about 1 or 2.