The results showed that Bacillus changed bacterial species composition of sediment and increased the number of aerobic bacteria.
结果表明：芽孢杆菌制剂改变了虾池表层沉积物细菌类群组成，增加了表层沉积物好氧细菌的数量。
The results showed that the probiotic Bacillus changed bacterial species composition of sediment and increased the number of aerobic bacteria.
结果表明，芽孢杆菌制剂改变了虾池底泥细菌类群组成，增加了底泥好氧细菌的数量。
The main environmental factors of restricting the growth and distribution of aquatic plants are water depth, wird-driven waves and transparency of lake water as well as composition of sediment, etc.
制约水生植物生长、分布的主要环境因素是水深、风浪、透明度以及沉积物的组成等；
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