没有昆虫，就不需要使用农药。
And without insects there would be no need for chemicals to kill them.
农药使用已经成为环境健康问题的一个重要关注点。
The use of pesticides has been a major concern in environmental health.
也许，永远不会有便宜而未使用过农药的食物。
Cheap, pesticide-free food is probably an unachievable objective.
葡萄上的白斑过多可能就是农药使用过。
概述了茶园农药质量安全、使用管理现状。
The quality, security and application status of insecticides is summarized in this paper.
概述了茶园农药质量安全、使用管理现状。
The quality, security and application status of insecticides is summarized in this paper.
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