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    Efficiency of Imidacloprid 25 WP AgainstAphis gossypii Glov
    25%咪蚜胺可湿性粉剂防治棉蚜药效试验
    Control Effect of Imidacloprid 25 WP on Wheat Ear Aphid
    25%吡虫啉可湿性粉剂防治小麦穗蚜试验
    Initial Study of Controlling Thrips in Rice Seedling Field by Imidacloprid
    吡虫啉防治水稻秧田蓟马的初步研究
    The Penetration-Wetting and the Efficacy against the Wheat Aphids of High Penetrating 2.5% Imidacloprid WP
    2.5%高渗吡虫啉可湿性粉剂渗透、润湿性及对麦蚜的防效
    Study on the Control of Wheat Bushy Stunt with Imidacloprid
    吡虫啉防治小麦丛矮病试验
    Imidacloprid residue in wheat straw was extracted with methanol in an ultrasonic bath and purified through a florisil column,detected by HPLC at 270 nm.
    采用超声波提取、弗罗里硅土层析柱净化、高效液相色谱(HPLC)法,在270 nm波长下,对吡虫啉在小麦植株中的残留进行了分析.
    The average recovery rate and coefficients of variation were 83.42%~96.47% and 2.95%~4.04% respectively,the detecion limits of imidacloprid was 0.001 5 mg·kg-1.These results showed that the accuracy,precision and sensitivity of the method accord with the demands of residue analysis of pesticide.
    结果表明,吡虫啉回收率为83.42%-96.47%,变异系数为2.95%-4.04%,最低检出浓度为0.001 5 mg. kg-1.该方法的准确性、精确性以及灵敏度均达到农药残留分析的要求.
    The LC50 value of the 4 insecticides to larvae of B. odoriphaga was 0.34~8.79 mg/L,and followed the order of toosendarin>chlorpyrifos>phoxim>imidacloprid.
    4种杀虫剂对韭蛆的LC50值为0.34~8.79mg/L,毒力大小依次为楝素>毒死蜱>辛硫磷>吡虫啉;
    Chlorpyrifos(15~120 mg/L) and imidacloprid(1.56~12.54 mg/L) applied alone caused 14.0%~28.0% and 0.0%~7.5% mortalities respectively, but their combinations with H06 caused 50.0%~65.0% and 58.8~80.0% mortalities respectively.
    毒死蜱15~120mg/L和吡虫啉1.56~12.54mg/L单用时韭蛆的死亡率分别为14.0%~28.0%和0%~7.5%,与H06线虫混用处理的死亡率分别为50.0%~65.0%和58.8%~80.0%。
    After treated for 5 d, the mortalities caused by chlorpyrifos+H06 and imidacloprid +H06 were 87.0%~95.0% and 61.3%~88.8%,respectively.
    药后5d,毒死蜱和吡虫啉与H06线虫对韭蛆的联合致死率分别达87.0%~95.0%和61.3%~88.8%。
    sinica,the LD50 values of imidacloprid,acetamiprid and buprofezin were 16.59,178.2 and 10 286 mg/L to eggs respectively,were 54.08,22.79 and 215.5 mg/L to the 2nd instar larvae respeitively,and were20.06,26.05 and 1 836 mg/L to adults respectively. The LD50 values ofthe three pesticides to adults of O.
    吡虫啉、啶虫脒和噻嗪酮对中华草蛉卵的LD50值分别为16.59、178.2和10286mg/L,对2龄幼虫的LD50值分别为54.08、22.79和215.5mg/L,对成虫的LD50值分别为20.06、26.05和1836mg/L;
    minutus were 62.14,8.92 and 170.9 mg/L,respectively. Imidacloprid,acetamiprid and buprofezin showed good selective toxicity between T. vaporariorum, C.
    吡虫啉、啶虫脒和噻嗪酮对微小花蝽成虫的LD50值分别为62.14、8.92和170.9mg/L。
    After being separated by HPLC-UV,the data of this sample was analysed with external standard method. The result are:the linear behavior figure of the standard curve of imidacloprid is 0.9997,avermectin is 0.9995,and the linearity range is 10.0~1 000 μg/L.
    样品采用酸性乙腈溶液提取,以高效液相色谱法分离检测,面积外标法定量分析,吡虫啉标准曲线的线性关系系数为0.9997,阿维菌素为0.9995,线性范围为10.0-1 000μg/L。
    The content of imidacloprid is 92.0%~110%,MRL is 0.01 mg/kg;
    枸杞中吡虫啉平均回收率92.0%-110%,最小检测浓度0.047μg/kg;
    with 100 fold dilution,the mortality of Lorsban48EC was the highest and was 73.41% at the 5th day,Methomy and Abamectin1.8%WP ranked next and Imidacloprid came the last with 54.57% mortality at 6th day.
    稀释100倍,仍以乐斯本的死亡率最高,第5天达到73.41%,其次是灭多威、阿维菌素,吡虫啉死亡率为最低,第6天达54.57%。
    Method: Imidacloprid was extracted with dichloromethane,cleaned up with chromatography column,then separated on Spherisorb C18 column by using Methanol-water(20∶80),detected at 270 nm.
    方法:样品经二氯甲烷提取,色谱柱净化,采用十八烷基键合硅胶柱,流动相为甲醇-水(20∶80); 检测波长270 nm。
    An emulsifiable formulation of Beauveria bassina conidia (Bb) produced using a diphasic fermentation technology was tested for efficiency against aphids infecting the bamboo shoots in Yuhang of Zhejiang Province during March and May 2003. Three aqueous dilutions (1×107,1×106 and 1×105 conidia·mL-1) were sprayed onto bamboo crown with water as negative control and 1000-fold dilution of imidacloprid 10% wettable powder (WP) as positive control.
    利用液-酵法生产的球孢白僵菌悬乳剂于2003年4~5月在浙江省余杭进行笋竹蚜虫的田间药效试验和农户示范,以3种不同浓度稀释液(含孢量分别为1×107、1×106、1×105个?mL-1)进行常规喷雾处理,并设清水对照及1000倍10%吡虫啉稀释液为阳性对照.
    The 9 common used insecticides of cypermethrin 4.5%EC,omethoate 40%EC,chlorpyrifos 40%EC,acetamiprid 3%EC,imidacloprid 10%EC provided excellent control for wheat aphids in fields. The control effects were over 90% at 7 days after spraying.
    为了明确杀蚜药剂对麦蚜的防治效果、适宜的防治时期、对生态环境安全性和粮食作物食品安全性的影响,对4.5%氯氰菊酯、40%氧化乐果、40%毒死蜱、3%啶虫脒、10%吡虫啉等9种防治麦蚜的药剂进行了筛选,发现各药剂对麦蚜的防效较好,喷药后7 d防效均在90%以上。
    The results show that the selective toxicity of imidacloprid is the highest among 15 insecticides tested, and its selective toxicity ratio(STR, ladybird LD50/aphid LD50)is 135.56.Other insecticides with higher selective toxicity are cyfluthrin, cypermethrin and malathion,of which STRs are 114.00,62.86 and 45.43,respectively.
    结果表明,供试杀虫剂中以吡虫啉对七星瓢虫幼虫和苹果黄蚜的选择性最高,其选择性比值(七里瓢虫LD50/苹果黄蚜LD50)为135.56,其次为氟氯氰菊酯、氯氰菊酯和马拉硫磷,其选择性比值分别为114.00、62.86和45.43。
    The LC_(50) values of acetamiprid and imidacloprid against Macrosiphum auenae were 1.58μg/ml, 2.24μg/ml respectively.
    3%啶虫脒乳油与10%吡虫啉可湿性粉剂对麦长管蚜24h的LC_(50)分别为1.58μg/ml、2.24μg/ml;
 

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