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File:1992. Helicopters spraying Bacillus thuringiensis var. kurstaki (Btk) for Asian gypsy moth eradication. Washington. (35228762094).jpg - Wikimedia Commons
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Product Bacillus thuringiensis(Btk) 发布日期:2011/7/14 浏览次数:7950 Bacillus thuringiensis (Bt) is a naturally occurring bacterial disease of insects. These bacteria are the active ingredient in some insecticides. Bt is considered safe to people and ...
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