蚜虫

70S in the 20th century the lower reaches of the Yellow River has started to move with helping to control the cotton and wheat aphid, 90 during the beginning of artificial propagation, and for the production.

七星瓢虫是鞘翅目瓢虫科的捕食性天敌昆虫，在我国各地广泛分布。20世纪70年代在黄河下游已开始用助迁法防治棉花和小麦蚜虫，90年代开始人工繁殖，并用于生产。

Take filtrate spray, exterminate the aphid on cotton effectively.

取滤液喷雾，可以有效地杀灭棉花上的蚜虫。

Nine different aphid-resistant alfalfas and four cross bred F1 were used in this experiment to investigate better dosage in SSR technique system and to seek the best combination among factors.At last,the best SSR technique system was established. The Taq DNA polymerase was 0.2μL(5U/μL),the 10×Buffer(Mg2+Plus)was 2.5μL , the dNTP Mixture was 2μL ( 2.5mmol/L), the primer was 1.5μL (10μmol/L),the template DNA was 1μL,the ddH2O was 16.3μL ,and the whole system was 25μL.

以九个不同抗蚜级别的苜蓿品种及四个杂交F1代为试材，摸索SSR反应体系中各个影响因素的浓度和用量，确定适合苜蓿抗蚜虫基因定位的SSR反应体系：其中Taq DNA聚合酶0.2μL(5U/μL)，10×Buffer(Mg2+Plus) 2.5μL，dNTP Mixture 2μL (各2.5mM)，引物各1.5μL (10μM)，模板DNA1μL，ddH2O 16.3μL补足25μL。

One day,I noticed clusters of tiny insects called aphids were visited by a large colony of ants.

有一天，我发现一成串的叫做蚜虫的小昆虫遭到了一群蚂蚁的攻击

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。

The population of aphids is normally kept down by other animals.

蚜虫的数量通常被其他动物控制在较低水平上。

Over the past few hours, I found some aphids died in the branches, some dead in the pot.

几个小时过去，我发现蚜虫有的死在枝叶上，有的死在花盆里。

The study aimed to provide scientific proof to reduce the aphids to harm wheat.

［目的］为减少蚜虫对小麦的危害提供科学依据。

Begin treatment when aphids build up on plants early in the spring.

蚜虫时开始接受治疗的基础上植物在春季早了。

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

到了夏天，我发现树叶开始枯萎，结果在树叶背面找到成串的叫作蚜虫的小虫子。

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。