害虫的例句大全

European moth introduced into North America; a serious pest of shade trees.

引入北美洲的欧洲蛾子; 是能遮荫的树的严重的害虫.

Investigations on Tobacco Storage Pests and Their Enemies in Fujian Province

福建省烟仓害虫及其天敌调查

In china, the tobacco storage pests have brought enormous economic loss.

在中国以烟草甲、烟草粉螟和大谷盗为代表的烟仓害虫有近40种，它们给企业和国家带来了巨大的经济损失。

Species of Natural Enemy and Biology of Predominant Natural Enemies in Tobacco Storage of Guizhou

贵州烟仓害虫天敌种类及优势种的生物学特性

This paper gives an overview on the studies and conceptual development of ecological pest management ( EPM) or ecologically based Pest management ( EBPM) strategy.

讨论有关害虫生态防治策略的若干基本概念，包括产生背景、含义、与综合防治等的关系以及实施等。

Two main methods in sustainable pest control are host plant resistance and biological control.

寄主植物抗性和生物防治是两种主要的可持续的害虫防治方法。

High diversity during non-outbreak phase can suppress large fluctuation of defoliators.

非暴发期的多样性高可降低害虫的变动幅度。

Study on Antifeeding Effects of 9 Asteraceae Plants against Three Pests

9种菊科植物提取物对蔬菜3种害虫拒食活性的研究

Discussion on Some Bionomical Characteristics of Forest Insects in the Tropics

试论热带森林害虫的一些生物学特色

Main Injurious Insects Affecting the Fine Variety Yield or Chinese Flr Seed Orchards and Their

影响杉木种子园良种产量的主要害虫及综合治理对策

The occurrence and control technology of insect pests of Eriobotrya japonica

枇杷害虫发生与防治技术研究

The vermin are very dangerous.

害虫总是有危险的.

They use ultraviolet lamp to kill pests.

他们使用紫外线灯杀死害虫.

But as we get warmer winters. we are getting more plant pests.

如果是暖冬的话, 我们却有更多的害虫.