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。
An insect pest fatal to cotton had struck the crop.
棉花遭受了一种致命的虫害。
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。
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