表面活性剂对杀虫剂的增效机制及药效研究

STUDIES ON THE EFFECT AND MODE OF SYNERGISM OF SURFACTANT MIXED WITH INSECTICIDES AGAINST LITCHI INSECT PESTS

在敌百虫和兴棉宝药液中分别加入φ为００１％～００４％的ＡＰＳＡ－８０，表面张力降低４１８３％～６０４３％；在荔枝叶上的接触角降低３７００％～６４２２％，沉积量增加１２８３％～３５４１％；室内毒力试验测定表明，敌百虫与ＡＰＳＡ－８０混用后，ＬＣ５０比单剂分别降低２３７３％和１３６９％，增效系数分别为１３１１１和１１７５１；田间试验结果表明：ＡＰＳＡ－８０能够明显提高兴棉宝防治荔枝蒂蛀虫的效果。

The surface tension of trichlorphon and cypermethrin solution reduced 41 83%～60 33% when added with APSA-80 at rates of 0 01%～0 04% The contact angles of solution on litchi leaf were decreased 37 00%～64 22%, whereas the deposition rate was enhanced 12 83%～35 41% Results of measurement in lab indicated that APSA-80 could reduced LC 50 of trichlorphon against Tessaratoma papillosa Duruy with decreasing 13 69%～23 73% in compared with its alone Results in field trials indicated that APSA-80 could enhanced the effect of cypermethrin against Conopomorpha sinensis Bradley with increasing 45 61%～51 68% in compared with its alone