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基因工程的诞生为玉米虫害和草害的防治提供了有效手段。
The birth of genetic engineering provides an effective means for the prevention and treatment of pests and feeds.
研究鸭子在稻鸭复合生态系统中对蜘蛛及病、虫、草害的影响。
The article studied the influence of ducks in a rice-duck complex ecosystem as well as its natural enemies and diseases, insects, weeds and pests.
介绍了我国主要农作物及其主要病、虫、草害使用农药的市场份额。
This paper deals with major crops and market portion of pesticides controlling major diseases, insect pests and weeds in China.
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