2012年对宁夏枸杞种植区吡虫啉的施用情况进行调查分析表明，枸杞蚜虫是宁夏枸杞种植地区主要的防治对象，而吡虫啉是多年以来防治枸杞蚜虫的最重要药剂之一，枸杞园平均每年施用吡虫啉5～6次，各枸杞种植区吡虫啉施用浓度逐年加大的现象普遍存在。

An investigation and analysis on the utilization of imidacloprid in Lycium Barbarum L. growing area of Ningxia were carried out in 2012. The results showed that the wolfberry aphid was the main control object in Lycium Barbarum L. growing area in Ningxia,and imidacloprid was one of the most important agents for prevention and control of the wolfberry aphid over the years. Imidacloprid were used for 5~6 times every year in wolfberry garden,and it exists universally that the application concentration of the imidacloprid increased year by year in various Lycium Barbarum L. growing areas.

该文对5%吡虫啉乳油对烟草烟蚜进行3地田间药效试验，通过对不同剂量5%吡虫啉乳油，在药后3、7、14、20 d进行差异显著性分析。结果表明5%吡虫啉乳油对烟草K326、烟草 G28、云烟-87防效效果较好。证明5%吡虫啉对烟蚜有较好的防治效果。

ln the research, 5% imidacloprid oil at different doses were applied to prevent Myzus persicae in order to explore significance analysis in 3, 7, 14, and 20 d, respectively, in three fields, and the results showed that 5% imidacloprid oil per-formed significant for K326, G28 and Yunyan-87, suggesting 5% imidacloprid oil is effective in control ing Myzus persicae.

介绍了吡虫啉的基本性质、作用机理,从抗药性、施药方法和药物复配3个方面阐述了影响吡虫啉防治效果的三重因素,同时介绍了吡虫啉在卫生消杀方面的扩展应用,最后提出了今后在其安全问题方面应做的工作。

The paper introduced the basic properties and action mechanism of imidacloprid, and elaborated the three factors (including pesticide resistance, application method and mixed use of pesticides) affecting its control efficiency. At the same time, the paper introduced the extended application of imidacloprid on disinfection and sterilization, and pointed out the works needed doing on the safety control of imidacloprid in future.

为有效防治杜鹃主要害虫杜鹃冠网蝽,选择37%高氯·马、1.8%阿维菌素、5%吡虫啉·氯氰菊酯复配乳油以及10%吡虫啉4种药剂,进行室内毒力测定及药效试验。结果表明:4种药剂对杜鹃冠网蝽均有较好的防治效果,药后5天的防治效果均达到100%,其中5%吡虫啉·氯氰菊酯复配乳油1 000倍液,药后1天、2天和3天对杜鹃冠网蝽的防效分别达到93.3%、98.9%、100%。4种药剂的毒力排序为5%吡虫啉·氯氰菊酯复配乳油37%高氯·马1.8%阿维菌素10%吡虫啉。

In order to control of Stephanitis pyriodes which is the main pest of Rhododendron simsii,37% beta-cyper-methrin malathion,1.8% avermectin,5% imidacloprid·cypermethrin and 10% imidacloprid were selected for toxico-logical test and laboratory experiments on Stephanitis pyriodes. The results showed that,all of the four pesticides were suit for controlling of Stephanitis pyriodes,the control effect of four pesticides were 100% after 5 days sprayed. The control effect of 5%imidacloprid and cypermethrin mixtures EC diluted by 1 000 times were 93.3%,98.9%and 100%after 1 day,2 days and 3 days sprayed respectively. The toxicity of four pesticides was 5% imidacloprid·cypermethrin>37%beta-cypermethrin malathion>1.8% avermectin>10% imidacloprid.

在室内采用浸叶法测定了氧化乐果、杀扑磷、毒死蜱、灭多威、吡虫啉、高效氯氰菊酯、阿维菌素及矿物油对新菠萝灰粉蚧若虫的毒力,结果表明处理24h后,对1龄若虫的毒力大小顺序为:毒死蜱灭多威高效氯氰菊酯氧化乐果吡虫啉杀扑磷阿维菌素矿物油;对2龄若虫的毒力大小顺序为:毒死蜱灭多威吡虫啉氧化乐果杀扑磷高效氯氰菊酯阿维菌素矿物油;对3龄若虫的毒力大小顺序为:毒死蜱灭多威吡虫啉杀扑磷高效氯氰菊酯氧化乐果阿维菌素矿物油。测定了氧化乐果、杀扑磷、毒死蜱、灭多威、吡虫啉及高效氯氰菊酯对新菠萝灰粉蚧雌成虫的毒力,结果表明处理24h后,对雌成虫的毒力大小顺序为:杀扑磷毒死蜱吡虫啉高效氯氰菊酯氧化乐果灭多威。结果表明毒死蜱、灭多威、吡虫啉和杀扑磷等可作为控制新菠萝灰粉蚧发生的药剂。

The toxicity of Omethoate,Methidathion,Chlorpyrifos,Methomyl,Imidacloprid,Beta-cypermethrin,Abamectin and Petroleum oil to the nymphs of Dysmicoccus neobrevipes Beardsley were studied by using dip method in the laboratory.The study results showed that the toxicity order of these insecticides to the 1st-instar nymph of D.neobrevipes was ChlorpyrifosMethomylBeta-cypermethrinOmethoateImidaclopridMethidathionAbamectinPetroleum oil,and the toxicity order of these insecticides to the 2nd-instar nymph was ChlorpyrifosMethomylImidaclopridOmethoateMethidathionBeta-cypermethrinAbamectinPetroleum oil,and the toxicity order of these insecticides to the 3rd-instar nymph was ChlorpyrifosMethomylImidaclopridMethidathionBeta-cypermethrinOmethoateAbamectinPetroleum oil.The toxicity order of Omethoate,Methidathion,Chlorpyrifos,Methomyl,Imidacloprid and Beta-cypermethrin to the female adults of D.neobrevipes was MethidathionChlorpyrifosImidaclopridBeta-cypermethrinOmethoateMethomyl.The results showed tha