查询词典 Blattella germanica

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。

Research on four plant extracts showed that tangerine had high stomach and contact toxity to Blattella germanica.

触杀试验结果表明，桔皮油、芥末油和生姜汁对德国小蠊若虫表现出一定程度的触杀作用，其校正死亡率率分别为58.62％、29.31％和15.52％，观察尚未发现大蒜提取物对德国小蠊触杀作用。

Objective To explore the effects of different nutritional conditions on the lifespan,development and fecundity of the nymphs and imagoes of blattella germanica.

目的 研究不同营养条件对德国小蠊若虫和成虫寿命、发育及繁殖力的影响，进一步的了解其生物学特性。

Effects of 3 kinds of plant-based materials including 14 materials on Blattella germanica were studied, Effects of 2 kinds of expellents and 2 kinds of pesticides were also studied, for the propose of comparation with the plant-based materials and evaluation of the latter.

本研究选用三大类共14种植物性物质对德国小蠊的防治进行了研究，同时对2种常用驱避剂和2种常用卫生害虫杀虫剂对德国小蠊的作用进行了测定，以期对植物性物质的作用进行比较评价。

Tangerine, garlic, mustard and ginger showed food non-preference effect to Blattella germanica. The repellent rate of Tangerine, garlic, mustard and ginger of the first day was 77.8%, 42.5%, 48.8%, 61.1% and 96.5%, effective time was 4, 7, 2, 8 and 14 days.

驱避实验结果表明，冷浸提法和索氏提取法提取的橘皮油、生姜汁、芥末油、和大蒜提取物均对德国小蠊表现出一定程度的驱避作用，其第一天驱避率分别为77.8％、42.5％、48.8％、61.1％、96.5％，持效期分别为4、7、2、8、14天。

Blattella germanica were taken into commercial buildings mainly with people and things,and then migrated through central air condition pipings and cracks in kitchen.

结论德国小蠊主要是通过机械性携带传入商务楼，在商务楼内通过中央空调管道和厨房间的地漏逐渐向周围蔓延。

Objective The aim of this study was to test the efficiency of boric acid as gel baits in the managements of German cockroach Blattella germanica population.

目的 利用硼酸粉剂制成凝胶食饵，控制德国小蠊危害。

Objective:To preliminaty identify biochemical mechanism of insecticide resistance by comparing activities of Acetylcholinesterase and Glutathione S-transferase amorg different field strains of German cockroach, Blattella germanica in Beijing.

目的：比较北京不同地区德国小蠊野外品系乙酰胆碱酯酶和谷胱甘肽S-转移酶活性上的差异，以初步揭示其生化抗性机制。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。