棉铃虫

And the role of predator guilds or dominant predators were different in different cotton bollworm generations.

天敌对棉铃虫的控制作用存在时间上的序列性和阶段性，不同棉铃虫发生世代天敌功能团和优势天敌作用大小不同。

It is an important biological agent to control cotton bollworm in the cotton field by parasitizing rate at 22.9%.

其寄主范围非常广泛，该蜂对棉铃虫各世代的平均寄生率可达22.9 %，是棉铃虫田间生物控制的重要因子。

Large areas of spring corn would induce the cotton bollworm, whichdecreased the population number of the 2nd generation in cotton fields.

2大面积的春玉米作物诱导棉铃虫，从而降低了第二代棉铃虫在棉田的种群数量。

A dominant parasitoid, Campoletis chorideae Uchida (Hymenoptera: Ichneumonidae), which attacked two important Lepidoptera pests, cotton budworm Helicoverpa armigera Hübner and tobacco budworm Helicoverpa assulta Guenée. We selected C.

棉铃虫齿唇姬蜂Campoletis chorideae Uchida是棉铃虫Helicoverpa armigera Hübner和烟青虫Helicoverpa assulta Guenée的主要寄生性天敌，对两种害虫的田间自然控制起着非常重要的作用。

Cotton bollworm is more serious pest in cotton belt of Xinjiang, China. In order to guarantee the biggest commercial cotton belt sustaining and healthy, Information project of pest monitoring and prediction is carried out in this commercial cotton base. In this research, we are focusing on automatical data acquisition, data delivery, design and construction of database, data processing and data display and forecast based on GIS. Key technologies and difficulty are explored, which is built the manipulable technologies and management platform for regional monitoring and prediction of cotton bollworm.

棉铃虫在新疆棉区危害逐年加重，为保障我国最大商品棉基地的可持续发展，开展了优质棉基地植保信息工程研究，本文结合新疆植保体系发展和未来新技术的动向，重点集中在有害生物数据自动化采集、数据远距离传输、数据库设计和数据库建设、模型处理和GIS系统在预测和信息发布上的应用，探索植保信息工程建设中的难点和关键技术，为区域化棉铃虫监测和预警提供技术保障和管理平台。

Although direct lethal effects on cotton boll worm couldn't be generated in tobacco plants transformed with cholesterol oxidase full gene vector or mature enzyme gene vector, inhibitory effects on the growth and development of cotton boll worm have been observed to a certain degree.

转单价胆固醇氧化酶全酶基因和成熟酶基因的转基因烟草植株均不能对棉铃虫产生直接的致死作用，但能使棉铃虫的生长发育受到一定程度的抑制。

The result, which the reproductive system of cotton boll worm(Helicoverpa armigera Hübner ) has been dissect ed in an all round, show that adults of various generations have a remarkable habit of immigration.

通过各代棉铃虫雌成虫生殖系统的解剖研究，表明阿克苏地区阿瓦提县各代棉铃虫成虫具有明显的迁飞习性。

The ecdysis mechanism is very important for the growth of H.

棉铃虫的蜕皮对其生长有着重要意义，因此，通过了解并控制棉铃虫的蜕皮，可以达到杀虫的目的。

As described above,two important lepidopteron pests,beet armyworm and cotton bollworm were surveyed and confirmed for existence of endogenous piggyBac elements. An intact piggyBac-like element was also obtained from the genome of cotton bollworm, and was thought to be potentially active.

综上所述，本究调查确定了鳞翅目两种重要农业害虫甜菜夜蛾和棉铃虫具有内源性piggyBac类似因子，并且从棉铃虫中获得了一个结构完整，具有潜在活性的piggyBac转座子。

Agricultural Research Service entomologist Tom Sappington works in the ARS Corn Insects and Crop Genetics Research Unit at Ames, Iowa. He has tracked local weevil movements by marking the insects with enamel paint or fluorescent powders and recapturing them later. Now he uses "microsatellites"-short, repetitive DNA sequences-and population assignment tests to find out where weevils in different populations have come from.

美国农业部网8月23日消息，美国农业研究局的昆虫学家汤姆在艾奥瓦州的埃姆斯玉米虫害作物和遗传学研究组，一直以来用瓷漆或萤光粉来跟踪当地棉铃虫的踪迹，现在他们通过&微型卫星&-短的重复序列DNA和繁殖分配试验，来定位寻找棉铃虫的行踪，这些测试有助于确定那些迁徙来的不同种类的棉铃虫到底从何而来。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。