This paper mainly on the eastern Hebei crop pest control work problems are described, and the corresponding measures to resolve.

文章主要对冀东地区农作物病虫害防治工作存在的问题进行了阐述，并提出了相应的解决措施。

Abstract: Crop pest and disease control is an important part in agricultural production, is an important guarantee farmers' income.

摘要：农作物病虫害防治是农业生产中的一个重要环节，是农民增收的重要保证。

A kind of crop pest and disease collection and management system is developed based on crop disease and pest controlling actual need.

面向农作物病虫害防治管理工作需求，设计开发了农作物病虫害防治管理信息系统。

Cycloechinulin has not been extensively studied but has been reported to exhibit insecticidal activity against the lepidopteran crop pest Helicoverpa zea.

尚无对环丙烷刺孢曲霉素的广泛研究，但已报道它有杀昆虫的活性，能杀灭鳞翅类作物害虫棉铃虫。

Each year ten percent of the crop is lost to a pest called corn rootworm.

每年有10%的作物受损于一种叫做玉米根虫的害虫。

To take an extreme example, farmlands dominated by a single crop are so unstable that one year of bad weather or the invasion of a single pest can destroy the entire crop.

举个极端的例子，以单一作物为主的农田是如此不稳定，一年的坏天气或单一害虫的入侵可以摧毁整个作物。

It is necessarily to monitor crop diseases and insect pests in integrated pest managerment.

农作物病虫害监测是有害生物综合防治必不可少的环节之一。

An insect pest fatal to cotton had struck the crop.

棉花遭受了一种致命的虫害。

The European corn borer is a common pest in this economically valuable crop.

欧洲玉米螟是一种经济作物玉米上的常见害虫。

The natural enemy of its pest, the assistant of the farm crop, is also the mankind's good friend, we all like it.

它的害虫的天敌，农作物的帮手，也是人类的好朋友，我们都喜欢它。

Farmers understand that adverse weather or severe pest infestations, for - example, can produce crop failure, or lack of response.

农民也知道如遇不利天气或虫害严重，作物会出现减产现象，或实行的各项措施达不到预期效果。

Pigeon pea: cover crop suited to human and animal nutrition, pest and disease control, N fixation and P disponibility.

豌豆是人类和动物的营养物，作为覆盖作物有效控制病虫害，固定氮素。

Therefore, it can not cause a threat on ecological environment to use lindane in partial control of crop insect pest in China.

作者认为，在我国部分害虫防治中起用林丹不可能对生态环境构成威胁。