0.3%印楝素乳油防治杨梅果蝇药效试验及持效期评价

Evaluation of Control Efficacy and Duration of 0.3% Azadirachtin Emulsion Against Waxberry Drosophila

采用0.3%印楝素乳油15、9、5.625ga.i./hm23个浓度,分别在荸荠、东魁2个杨梅品种上进行杨梅果蝇防治药效及持效期评价试验。其结果表明:0.3%印楝素乳油9ga.i./hm2防治荸荠杨梅果蝇,防效为63.26%～86.62%,持效期9～10d;15ga.i./hm2防治东魁杨梅果蝇,防效为74.5%～88.36%,持效期8～9d。

Field trails were carried by using 0.3% azadirachtin emulsion at 15, 9and 5.625 g a.i./ha against waxberry drosophila of Biqi and Dongkui in orchard. The results showed that the control efficacy was 63.26 to 86.62% and active duration was 9 to 10 days at 9 g a.i./ha on Biqi. However, control efficacy was 74.5 to 88.36% and active duration was 8 to 9 days at 15 g a.i./ha on Dongkui.