Practice effective rodent and insect control.

采用有效的防啮齿目动物和防虫措施.

By analyzing the characters of garden plants in Dagang district, it discussed the main insect pests and the most appropriate methods for insect control.

通过对大港区园林植物的品种及特点分析确定主要的病虫害防治对象，采取有针对性的防治措施，达到有效控制病虫害的目的。

Birds help with insect control, pollination, and disbursing seeds throughout the landscape.

鸟类帮助控制昆虫，植物授粉，还有在各地播下种子。

Poor: No organized program for insect control . Insects or evidence of their presence found throughout plant.

差: 未建立害虫控制的程序,或在厂房内有害虫或害虫的痕迹.