Control way of insect pest.

虫害控制方法。

An insect pest fatal to cotton had struck the crop.

棉花遭受了一种致命的虫害。

Thus, CMS lines are needed to improve insect pest resistance in hybrid rice.

因此，杂交稻抗虫性的提高有赖于不育系的改良。

Dendroctonus valens is a dangerous insect pest of several pine species in China.

红脂大小蠹是我国一种危害油松等松树的外来入侵物种。

The system will greatly improve the prevention of cotton diseases and insect pest.

此系统的建立将对我国棉花病虫害防治具有现实性的意义。