0．5％毒死蜱药肥混剂对韭蛆的田间防治效果

目的]评价0．5％毒死蜱药肥混剂对韭菜韭蛆的防治效果。方法]于2012～2013年，在山东省烟台市福山区进行了0．5％毒死蜱药肥混剂防治韭菜韭蛆田间药效试验。结果]0．5％毒死蜱药肥混剂在1875g／hm2施用量下，2012和2013年药后21d的防效分别达77．15％和80．00％，21d虫口防效分别达99．55％和97．30％，增产效果分别为59．06％和30．09％，显著高于对照药剂5％毒死蜱颗粒剂。结论]应用0．5％毒死蜱药肥混剂防治韭蛆，推荐使用剂量为l125～1875g／hm2。

Control Efficacy of Chlorpyrifos 0.5 % Mixed Preparation of Pesticide and Fertilizer on Bradysia odoriphaga in Field

Objective ] The control efficacy of chlorpyrifos 0.5% mixed preparation of pesticide and fertilizer in controlling Bradysia odoriphaga was determined in the field. Method] Control efficacy of Chlorpyrifos 0.5% mixed preparation of pesticide and fertilizer on Bradysia odoriphaga in field was studied in Fushan District of Yantai City in Shandong Province in 2012 -2013. Result] At the concentration of 1 875 g/hm2, chlorpyrifos 0.5% mixed preparation of pesticide and fertilizer showed good control efficiency against Bradysia odoriphaga Yang et Zhang with control of 77.15% and 80.00% after 21 days after treatment in 2012 and 2013, respectively, and insect population control effect were 99.55% and 97.30% , and the average increasing rate were 59.06% and 30.09% respectively, which was obviously higher than that of chlorpyrifos 5% GR at 1 875 g/hm2. Conclusion] Chlorpyrifos 0.5% mixed preparation of pesticide and fertilizer against Bradysia odoriphaga was applied with recommended dosage of 1 125 - 1 875 g/hm2.