几种杀虫剂对葡萄斑叶蝉的防效

葡萄斑叶蝉是新疆葡萄生产上的重要害虫,田间药效试验表明:25;阿克泰水分散粒剂4 000～8 000倍和10;吡虫啉可湿性粉剂1 500～3 000倍,对葡萄斑叶蝉防效高,持效期长,药后7 d防效在90;以上,药后21d防效仍在80;以上.48;乐斯本乳油2 000～4 000倍对葡萄斑叶蝉具有很好的速效性,但持效期短,药后21 d防效为47.8;～56.30;.2.5;功夫水乳剂3 000～6 000倍对葡萄斑叶蝉的防效不高,药后21 d防效为40.4;～60.0;.

Efficacy of Several Insecticides on Grape Leafhopper

The grape leafhopper, Erythroneura apicalis NaWa, is one of the important pests in vineyards in Xinjiang. The experimental results showed that 25% thiamethoxam WG with 4 000～8 000 times and 10% imidacloprid WP with 1 500～3 000 times were very effective and had long persistent control on grape leafhopper. The control effects were higher than 90% and 80% respectively after 7 days and 21 days of the application. 48% chlorpyrifos EC with 2 000～4 000 times and 2.5% lambdacyhalothrine EW with 3 000～6 000 times gave poor control of grape leafhopper. The control effects were 47.8%～56.30% and 40.4%～60.0% respectively.