关键词: 山东省, 山东省, 农机合作社, 运营机制, 层次分析法

Abstract: To clarify the toxicity and control effect of current insecticides, the toxicity of nine insecticides on Scirtothrips dorsalis 2nd instar nymphs and adults and the control efficacy in filed were evaluated. The results showed thatLC 50 of 1.5% Emamectin Benzoate was the lowest on the 2nd instar nymphs and adults, which was 0.90, 0.91 mg/L, respectively; followed byLC 50 of 6% Spinetoram, which was 0.91, 0.92 mg/L, respectively.4.5% Beta cypermethrin had the highest LC 50 on the 2nd instar nymphs and adults, which was 471.38, 1626.92 mg/L, respectively. TheLC 50 value of other insecticides on the 2nd instar nymphs ofS. dorsalis was less than that on adults except the 2.8% Avermectin, indicating that the 2nd instar nymphs were more sensitive to the insecticides compared with adults. The field trial results showed that 10% Acetamiprid ME, 6% Spinetoram SC, 1.5% Emamectin Benzoate EC, 480 g/L Chlorpyripos EC, 20% Imidacloprid SL and 12.5% Abamectin acetamiprid ME had excellent rapid availability to thrips species of mango. 22.4% Spirotetramat SC had weak rapid availability to the thrips. The results also showed that the Spirotetramat mixed with additive ‘Ha suteng’had high persistent effect. As a result, the Spirotetramat blended with other additives had higher rapid availability and intermiscibility to improve the control effect.