查询词典 insecticides

For this reason people through the transformation of the structure to light more stable and insecticidal activity of a new series of pyrethroid insecticides.

为此人们通过对其结构的改造合成出对光稳定且杀虫活性更高的一系列新的拟除虫菊酯杀虫剂。

This provides the theoretical foundation of the syntheses of leadcompounds and exploitation of botanical insecticides for Juglans mandshurica.

为进一步研究核桃楸活性先导物的化学修饰，开发出在实践中具有推广价值的、环境友善型的核桃楸植物源农药打下良好基础。

When the insecticides were applied as foliage spray at a dosage of 1500g/ha on 2￣3 instar larve, the control effect was over 66% and persistent over 7 days.

每亩用100克20％可湿性粉剂校正防效在66％以上，持效期可达7天以上，两者药效和持效优于或接近每亩60克10％氯氰菊酯。

Methods: Contact method with thin-layer of the products. Two insecticides were tested. The products were painted on test boards with the dose of 15mg a.I./m2 and the boards were stored at room temperature for 24 hrs, 0.5 year, 1 year, 1.5 year and 2 years. Two strains of sensitive cockroach ( Blattella germanica and Periplaneta americana ) were used in the efficacy tests and stability tests.

药膜接触法，2种药笔按国家标准分别进行药效测定，即在实验室采用相同的药膜板，2种药笔分别按15mg/m2均匀地涂抹于药膜板上，在室内常温自然存放24h、半年、1年、1年半和2年，每一个时段用两种敏感品系试虫分别进行药效和持效测定。

The single toxicity of Chlorpyrifos, Diazinon and Malathion and joint toxicity of ternary mixtures of organophosphate insecticides to photobacterium phosphoreum were determined.

实验测定了三种有机磷杀虫剂毒死蜱、二嗪农和马拉硫磷三种杀虫剂对发光菌的单一毒性，以及固定比率配比下三种有机磷杀虫剂的三元混合体系的联合毒性效应。

The results from modeling and that from bioassay with Plutella xylostella appear to have a better consistency. It suggests that the resistance simulation modeling might be useful for predicting and analyzing the evolution of resistance of pest population to insecticides.

以小菜蛾Plutella xylostella为模型昆虫所作的试验结果表明，模型模拟与验证试验的结果具有较好的一致性，说明抗性模拟模型可用于害虫种群的抗性演化预测和分析。

Diamondback moth,Plutella xylostella L.,a cosmopolitan pest of crucifers ,had shown resistance to more than 50 insecticides which had brought large difficulties in chemical control of pests.

小菜蛾是一种世界性十字花科蔬菜害虫，目前已对生产上常用的杀虫剂产生了不同程度的抗药性，给药剂防治带来很大的困难。

Experiments on control of Prodenia litura with 6 kinds of microbial insecticides were conducted. The results of laboratory and field tests indicated that control effects of 6 kinds of microbial insecticide were better than kung pesticide (Lambda-Cyhalothrin) at a dilution of 2000. Emamectin benzoate at a dilution of 1000 and Tebufenozide at a dilution of 600 showed best, and control effects were over 90 percent in 3 days after application.

通过室内药效测定与田间药效试验对6种防治斜纹夜蛾的生物杀虫剂进行筛选，试验结果表明：各供试生物杀虫剂防治效果都优于对照药剂&日高&(Lambda-Cyhalothrin)2000倍液，其中&保尔&1000倍液（高渗甲维盐Emamectin benzoate）和&虫酰肼&600倍液防治斜纹夜蛾幼虫的效果最佳，在施药后的第3天，室内和田间防治效果均超过90%。

Pupal treatment with dichlorvos and bisultap reduced emergence of adult wasps, while the other insecticides had no effect.

试验表明，敌敌畏和杀虫双处理蜂茧后降低了成蜂羽化率，其他杀虫剂处理蜂茧后并未影响成蜂的羽化。

The results showed that fipronil, which belongs to the benzyl pyrazole pesticides, had the highest toxicity to this insect of the tested insecticides.

结果表明：供试药剂中苯并吡唑类杀虫剂氟虫腈对细胸金针虫幼虫的毒力最高，LC50值为0.007613mg/kg土。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。