查询词典 aphids

Results show that the insect community structure in the Bt fields differed sharply from that in the CV fields. The populations of the Lepidopterous pests, such as cotton bollworm, corn borer, diamond bollworm and cotton leaf caterpillar, decreased significantly in the BT fields, while the populations of non-target pests with piercing-sucking mouthparts, such as leaf bugs, cotton spider mites, cotton aphids and whiteflies, increased obviously. Much more predators, such as spiders and ladybirds, and much less parasitiods of Helicoverpa armigera were observed in the BT fields.

结果表明，与常规棉田相比，Bt棉田棉铃虫、玉米螟、金刚钻、棉小造桥虫等鳞翅目害虫种群数量显著降低，而盲蝽象、红蜘蛛、棉蚜、烟粉虱等非靶标刺吸式害虫种群数量显著增加；蜘蛛、瓢虫等捕食性天敌种群数量显著增加，而棉铃虫的寄生性天敌种群数量则显著下降。

Alternation of sexual and parthenogenic generations, as in some aphids.

响度单位等于赫的纯音声压级在闻阈上分贝时的响度。

We grew fifteen plant species with and without non-coevolved polyphagous locusts and cosmopolitan, polyphagous aphids.

现在，对15个植物物种（包括以前已经表现出生存范围快速扩展的6个物种及9个相关的本地种）的生长状况所做的一项研究表明，向北-西欧扩展其生存范围的外来植物物种与本地种相比，暴露于地面下敌人和地面上广谱草食动物的机会都要少一些。

This site also offers databases on insect collections at the Illinois Natural History Survey, literature on insect viruses and pathogens, soybean aphids, and the Therevidae.

这是美国伊利诺斯州自然历史调查局生态昆虫学中心的主页，提供有关生物防治、昆虫迁移和分布、城市昆虫生态等下级页面的链接，INHS的昆虫收藏数据库，以及昆虫病毒和病原体、大豆蚜虫等方面的文献。

In addition to the capacity of transmission SCYLV between sugarcane plants efficiently, 100%(9/9), 75%(6/8), and 50%(4/8) respectively while 15 viruliferous aphids were inoculated for each plant.

建立了能够检出单头蚜虫及侵染早期未现症植株体内SCYLV的巢式RT-PCR技术，在超过80%的饲毒2周以上的甘蔗绵蚜无翅成虫体内检测到病毒的存在。

Under the laboratory conditions of natural temperature , several kind of predacious ladybugs were fed. We had an detailed observation to their life habit and predatory function to aphids.

在实验室自然变温条件下对几种捕食性瓢虫进行人工喂养，对其生活习性以及对蚜虫的捕食量进行详细的观察记录。

On the one hand we're supposed to believe that the Darwinian mechanism converted a proto-insect into a stunning array of radically different life forms (termites, beetles, ants, wasps, bees, dragonflies, stick insects, aphids, fleas, flies, mantises, cockroaches, moths, butterflies, etc., each group with its own diversity) well within the space of 400 million years.

一方面，我们应该相信达尔文的机制能够将那一只始祖昆虫在 4 亿年内变成种类多到令人瞠目的生命形态（白蚁、甲虫、蚂蚁、蜻蜓、黄蜂、蜜蜂、竹节虫、蚜虫、跳蚤、苍蝇、螳螂、蟑螂、蛾、蝴蝶……）。

The fungal infection was almost undetected in mummified aphids at 5 or 7 days after A.

接菌后的寄生蜂对蚜虫寄生率几乎无影响，但寄生蜂在蚜虫体内的存活时间缩短了27.8%。

Treat in the fall to reduce the number of aphids that may produce overwintering eggs.

治疗在秋季，以减少可能产生蚜虫越冬卵数量。

"Frost, if severe and long enough , kills exposed aphids, but enhances development of overwintering eggs."

霜冻，如果是时间较长的霜冻，则可杀死裸露的蚜虫，但可引导产生越冬卵。

In this new architectural plan the Garden of Golgotha came to be at the centre of the new city.

Aelia 是高举他自己，并在此城内朝拜罗马诸神。

The continuous nature of peat accumulation means that terrestrial coaly rocks may provide a higher resolution and more complete record of base-level change than the time-equivalent shallow-marine strata, thus enabling the identification of highfrequency cycles that are not recorded in themarine strata.

泥炭积累的持续性质的手段，陆地coaly岩石可提供较高的分辨率和更完整的记录基准面变化的影响时，相当于浅海阶层，从而使确定的高频周期，不记录在themarine 阶层。