植物源药剂混配防治西花蓟马的药效研究

摘要

通过对9种植物源药剂进行药剂混配并与1种化学药剂(2.5%溴氰菊酯)对苜蓿上西花蓟马(Frankliniella occidentalis)进行防治比较试验,筛选出针对西花蓟马具有较好防效的复合植物源药剂.结果表明,10%柠檬草乳油250倍液与0.3%印楝素乳油800倍液以及0.3%印楝素乳油800倍液与2.5%鱼藤酮乳油800倍液两种组合具有显著效果,防效分别为76.5%～92.5%和79.9%～88.7%,具有见效快、持效期长的特点.%Botanical insecticides with high control effects on alfalfa thrips were selected through field tests.The results showed that 10% lemongrasstin with 0.3%deltamethrin and 0.3% deltamethrin with 2.5% rotenone had significant effects,with the control levels at 76.5%-92.5%and 79.9%-88.7%,respectively.They had advantages like fast and long effects.