杀虫威对棉铃虫、烟青虫、菜青虫的防治效果

田间试验表明 ,新氨基甲酸酯杀虫剂杀虫威对鳞翅目害虫棉铃虫、菜青虫、烟青虫防治效果优良。杀虫威 2 0 %EC在河南防治 2代棉铃虫使用剂量 1 0g (a.i.) 667m2 药后 2～ 7d ,校正防效为90 65 %～ 97 72 % ,在山东药后 3～ 5d ,防效为 85 1 7%～ 91 2 3 % ,7 5g (a .i.) 667m2 相应药效两地分别为 88 41 %～ 95 2 7%和 81 40 %～ 85 61 % ;防治 3代棉铃虫使用剂量 2 0g (a.i.) 667m2 药后 2～ 5d ,防效两地分别为 83 93 %～ 86 1 5 %和 85 5 3 %～ 88 2 9% ,1 5g (a .i.) 667m2 相应药效分别为 77 66%～80 2 3 %和 78 5 0 %～ 83 75 %。防治烟青虫使用剂量 1 0g (a.i.) 667m2 药后 3～ 7d校正防效为 85 5 7%～ 88 2 9% ,7 5g (a .i.) 667m2 相应药效为 81 5 1 %～ 86 1 1 %。防治菜青虫使用剂量 7 5～ 1 0g (a .i.) 667m2 药后 3～ 7d防效为 87 5 0 %～ 96 1 1 %。

三元复配制剂杀虫威的分析方法研究

本文采用气相色谱法，在一根５％ＱＦ－１填充柱上，以邻苯二甲酸二乙酯和荧蒽为内标，在适宜的色谱条件下对三元复配制剂杀虫威进行分析。方法的变异系数：甲胺磷为０．７３％，异丙威为ｏ．６５％，噻嗪酮为０．５２％。回收率：甲胺磷为９９．０～１００．２％，异丙威为９９．１～９９．７％，噻嗪酮为９９．２～１００．４％。

杀虫威对菜粉蝶幼虫的毒力测定及田间药效试验

由氯氰菊酯、敌敌畏和水胺硫磷混配而成的杀虫威，对菜粉蝶幼虫的毒力测定结果表明，其共毒系数为１９６．７，具有较好的增效作用，增效倍数接近１倍。田间药效试验结果显示，用１４．９％杀虫威乳油２０００倍液防治甘蓝上的菜粉蝶幼虫，效果十分理想。

灭虫灵、杀虫威、菌毒威对宽体金线蛭的急性毒性作用

本文报道了灭虫灵、杀虫威、菌毒威三种常用农药对宽体金线蛭(Whitmania pigra)的急性毒性作用结果。给出了三种药物对宽体金线蛭24h、48h、96h的半致死浓度(LC_(60))和安全浓度(SC)。

10%杀虫威乳油生产中的几个技术问题

着重讨论了１０％杀虫威乳油配方研究和生产中的几个技术问题，即敌敌畏和氯氰菊酯的配比，溶剂的选择，增效剂的质量对乳油质量的影响。

几种药剂混用对稻纵卷叶螟的防效调查

为探究多杀·茚虫威、多杀霉素和四唑虫酰胺等杀虫剂与阿维菌素混用对稻纵卷叶螟的防治效果和持效期,以及药剂混用对水稻的安全性,本研究开展了田间防效试验。结果表明,15%多杀·茚虫威SC等杀虫剂与10%阿维菌素SC混配施用对稻纵卷叶螟防效明显,危害稳定期调查,15%多杀·茚虫威SC 300 mL/hm^(2)与10%阿维菌素SC 750 mL/hm^(2)混用、200 g/L四唑虫酰胺SC 150 mL/hm^(2)与10%阿维菌素SC 750 mL/hm^(2)混用两次施药处理对稻纵卷叶螟防效在95%以上。建议防治稻纵卷叶螟在卵孵高峰期茎叶喷雾施药,采取15%多杀·茚虫威SC 300 mL/hm^(2)与10%阿维菌素SC 750 mL/hm^(2)混用,或200 g/L四唑虫酰胺SC 150 mL/hm^(2)与10%阿维菌素SC 750 mL/hm^(2)混用。

英国生产一种高效、用量少的新农药

一种能够控制全世界多种农作物虫害的新的杀虫剂将于明年在欧洲、远东、澳大拉西亚(系澳大利亚、新西兰及其附近南太平洋诸岛的总称)、非洲和中东大量销售。 英国壳牌国际化学公司刚刚出售的这种杀虫剂名Fastac。据说。

三化螟药剂防治试验

笔者1995年在象州县罗秀乡大林村晚稻大田,进行三化螟药剂防治试验。试验设亩用20%三唑磷(湖北随化产)150克、18%杀虫双(湖南农药厂产)250克、杀虫威(广州化工研究所产)50克及空白对照4个处理,每处理3次重复共12个小区。每小区0.10亩。于禾苗大胎破口时用药,按每亩用药兑水40公斤配制药液,于上午10时左右均匀喷雾。药后10天、15天按5点取样法分别调查各处理区白穗,每点取样10丛,计算白穗率。调查结果,药后10天各处理的白穗率平均为0.98%、2.28%、1.02%和10.21%。

Using Luseweilei insecticide to control Dendrolimus superans T.

Luseweilei is an easily-bursted microcapsule insecticide. A test of effectiveness of the insecticide to control the larvae of Dendrolimus superans T. was carried out in larch forest in Baoan Forest Farm of Nehe City, Heilongjiang Province, in April 2001. The solutions of different concentrations (1:150, 1:250, 1:350, and 1:450 Luseweilei : water) were sprayed on the larch trunk before the overwintering larvae climbing on trees and the spraying lengths (height) designed were 1.0, 2.5, and 3.5 m high from ground. The control result showed that spraying 150-, 250-, and 350-fold solutions of the insecticide all produced a good control result, with a mortality rate of 97%, but the 450-fold solution only produced 70% mortality. It is concluded that this insecticide can be used as a kind of good insecticide to control the overwintering larvae of D. superans in spring. Spraying 350-fold solution of easy-burst microcapsule insecticide and one meter spraying length are recommended for the future application..

Integrated Control of Meloidogyne Incognita Infesting Tomato Plants Using Callus Powders Derived from Certain Plants Either Alone or in Combination with Oxamyl under Out-Door Conditions

The effect of four dried callus powders derived from certain plants, i.e. tomato, Lycopersicon esculentum; periwinkle, Catharanthus roseus; thorne apple, Datura stramonium and oleander, Nerium oleander applied separately or concomitantly with oxamyl at a half of the recommended dose each on tomato seedlings grown in soil naturally heavy infested with M. incognita under field conditions, indicated that dried callus powder derived from N. oleander either alone or mixed with oxamyl significantly surpassed the other tested treatments in improving percentages of increase in whole plant fresh and shoot dry weights as well as increasing numbers and weights of fruits. Concerning other treatments including oxamyl at a half of recommended dose with each tested callus powder, similar results were evident regarding tomato plant growth parameters. C. roseus plus oxamyl achieved the highest percentage of increase in whole plant fresh weight （141.4%） and shoot dry weight （189.7%） and ranked second to N. oleander ＋ oxamyl in this respect over the untreated plants, respectively. One the other hand, among all tested materials single application of either L. esculentum or oxamyl gave the least values of such criteria which averaged 34.4% and 61.7% or 39.5% and 11.2%, respectively. All tested treatments significantly reduced the total number of galls, egg-masses and eggs in egg-masses especially, dried callus powder of N. oleander which applied singly or combined with oxamyl. The least values of reduction percentages of galls and eggs in egg-masses among all treatments were recorded from tomato plant received dried callus powders of L. esculentum applied alone or concomitant with oxamyl.