polyphagous

The pest is polyphagous , has obvious selectivity for hosts and good adaptability to tobacco .

该蝇系多食性害虫，对寄主作物有明显的选择性，对烟草有较强的适应性。

It is a polyphagous and gluttonous pest of 170 species of host plants .

该虫属杂食性和暴食性害虫，寄主有170余种。

Multitudinous host plants and the inherent polyphagous characteristics enhance the wide invasion of B and Q biotypes in different counties .

丰富的寄主植物以及本身具有的多食性特性有助于B型、Q型等生物型在世界各地的广泛入侵。

The insect polyphagous character along with the development of insect classification technology makes it possible for different kinds of insects to live in the single grain .

储粮害虫的多食性以及昆虫分类技术的发展，使得同一种粮食内可能存在不同种类或类群的害虫。

Host plant selection mechanisms of noctuid polyphagous insects are hot spots of the co-evolution between plants and insects .

夜蛾科多食性昆虫对寄主植物的选择机制一直是昆虫与植物协同进化研究中的一个热点问题。

The Investigating on Sorts , Occurring and Endanger of Polyphagous leafminer in Zhangjiakou Area

张家口地区多食性斑潜蝇种类及发生为害调查

The susceptibility and probably the resistance of the polyphagous insects to insecticides would vary with the host plants they fed on .

杂食性农业害虫因取食的寄主植物不同，能引起对杀虫剂的敏感性改变，进而可能影响害虫抗药性的产生和发展。

Are polyphagous obligate endoparasites of plant roots . These nematodes currently constitute one of the most economically important groups of pathogens of agricultural crops in China .

为广寄主性的植物根系专性内寄生物，是当前威胁中国农业生产最重要的病原物类群之一。

Spodoptera exigua is an important polyphagous and worldwide distribution agricultural pest , which continues to expand the occurrence regions in our country , and the degree become increasingly serious .

甜菜夜蛾是一种分布较广泛的农业害虫，其发生地区在我国不断扩大。

The polyphagous or polyvoltine scale insects can attack the plants seriously , and they often have the characters of the generation overlapping , high population density and fast spreading .

蚧虫以多世代、多食性种类发生严重，并且具有世代重叠、发生量大、蔓延快的特点。

Cotton aphid Aphis gossypii ( Glover ) belong polyphagous pests , mainly against cotton , squash , watermelon , wood and other plants , widely distributed in the world .

棉蚜Aphisgossypii（Glover）属多食性害虫，主要危害棉花、南瓜、西瓜、木谨等多种植物，在世界范围内广泛分布，在我国各棉区均有分布和危害。

Beet armyworm is a kind of polyphagous pest , and they can eat 35 families 108 genera , 138 species of plants , including 28 kinds of field crops , 32 kinds of vegetables .

该虫属多食性昆虫，可取食35科108属138种植物，其中大田作物28种，蔬菜32种。

Spodoptera litura , the host of the virus is a kind of polyphagous insect which is harmful to economic crop and vegetables such as alimentary crop , cotton , oil plants and so on .

其宿主斜纹夜蛾（Spodopteralitura，Spli）是鳞翅目夜蛾科的杂食性害虫，分布范围广，是我国粮棉、油等经济作物和蔬菜的重要害虫之一。

Beet armyworm , Spodoptera exigua H ü bner ( Lepidoptera : Noctuidae ) is one of worldwide polyphagous insect pest . It outbreaks frequently all over the world and have caused high level of economic damage .

甜菜夜蛾SpodopteraexiguaHübner（鳞翅目：夜蛾科）是一种世界性害虫，在世界各地均有严重为害或暴发成灾的记录，并造成过重大的经济损失。