斜纹夜蛾药剂防治综合决策的研究

根据不同药剂对斜纹夜蛾的防治效果、防治工本费、对天敌的影响、防治后挽回的产量损失等资料，以净收益最大作为最优防治目标，运用优化理论和多目标决策方法，对11种药剂防治措施进行了综合分析。结果表明，在11种药剂防治措施中，以每667m^2施1．8％阿维菌素乳油16．7ml最优，其次是1．8％阿维菌素乳油25ml，20％氰戊菊酯乳油25ml，2．5％功夫乳油16．7ml，2．5％功夫乳油25ml，20％氰戊菊酯乳油50ml，4．5％高效氯氰菊酯乳油50ml，4．5％高效氯氰菊酯乳油25ml，50％辛硫磷乳油50ml，10％除尽悬浮剂16．7ml，10％除尽悬浮剂25ml，为合理地选择农药和用量提供了科学依据。

Study on comprehensive decision-making of pesticide control to Spodoptera litura Fabricius

By applying the principle of optimality and multiple objective decision-making, and based on the control effect and the control cost of Spodoptera litura, decrease rate of spider and the retrieved yield, 11 pesticide control measures were comprehensively analyzed to find the optimal control measure with highest benefit. The result showed that, among the eleven measures, the optimal one is 1.8% abamectin EC 16.7ml/667m 2, followed by 1.8% abamectin EC 25ml/667m 2, 20% fenvalerate EC 25ml/667m 2, 2.5% cyhalothrin EC 16.7ml/667m 2, 2.5% cyhalothrin EC 25ml/667m 2, 20% fenvalerate EC 50ml/667m 2, 4.5% beta-cypermethrin EC 50ml/667m 2, 4.5% beta-cypermethrin EC 25ml/667m 2, 50% phoxim EC 50ml/667m 2, 10% chlorfenapyr SC 16.7ml/667m 2, 10% chlorfenapyr SC 16.7ml/667m 2 respectively. The result provided scientific basis for applying pesticides reasonably.