aphids

A field may be smothered with aphids.

一块田的植株可以被蚜虫盖满.

She pinched the aphids off the rose.

她从玫瑰(花)上抓走蚜虫.

Chrysopidae and Hemerobiidae ; larvae feed on insect pests such as aphids.

两种薄纱状翅膀的昆虫之一(蛹与褐 蛉 )其幼虫吃诸如蚜虫等的害虫.

The larvae prey upon small aphids.

这种幼虫以小蚜虫为食。

However, reproduction rates of some insects such as aphids are influenced by nutrition.

然而, 一些昆虫的繁殖率,如蚜虫等是受营养影响的.

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

有性生殖和无性生殖的交替.

When growing vegetables, one must guard against cabbage aphids.

菜农在种植蔬菜时一定要注意防治菜蚜.

Clusters of tiny insects called aphids were to be found on the underside of the leaves.

结果在树叶背面找到成串的叫作蚜虫小虫子.

The young beetle larvae can eat hundreds of aphids.

而幼龄瓢虫则可吃掉数百只蚜虫.

Phloem elements and adjacent tissues are the principal feeding sites for most aphids.

韧皮部及其邻近组织是大多数蚜虫的主要取食部位.

Certain aphids seem to prefer waxy leaves, whereas other species are repelled by them.

有些蚜虫,看来喜欢有蜡质的叶片, 而这种叶片对另一些蚜虫却有拒避作用.

Wind has little influence on sedentary aphids.

风对不动的蚜虫很少有影响.

Heavy rain or hail may dislodge many aphids from the plants.

大雨和冰雹可从植株上击落很多蚜虫.

Viruses are transmitted by VECTORS such as aphids and nematodes.

病毒的传播由传染媒介执行,例如蚜虫和线虫.

Fungal pathogens are important natural biological control agents of aphids.

病原真菌是蚜虫的重要自然控制因子.