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提起细菌,人们往往会联想到霍乱菌、伤寒菌、结核菌……这些臭名昭著的病菌,致人疾病,危害人类健康,大家都很讨厌它们。然而,细菌世界很大,种类繁多。在细菌大家庭中,并不是所有的细菌都对人有害,有不少细菌对人类还有贡献昵!例如,我们吃的泡菜、喝的酸奶,都是经过一些细菌的“加工”才制成的。农村使用的沼气池,也是靠细菌发酵产生的沼气。豆科植物的根瘤细菌,能够合成氮肥,增加植物养料。右些细菌还能分解土壤中的动植物遗体,改良土壤,增加肥力。
When people bring up bacteria, people often think of cholera, typhoid, and tuberculosis. These notorious pathogens cause diseases and endanger human health. Everyone hates them. However, the bacteria world is very large and varied. In the germs family, not all bacteria are harmful to humans, many bacteria contribute to humans! For example, we eat pickles, drink yogurt, are through some bacteria “processing ” Made of. Digesters used in rural areas, but also by the bacterial fermentation of biogas. Legume nodulation bacteria, can synthesize nitrogen fertilizer, increase plant nutrients. The right bacteria also break down the remains of plants and animals in the soil, improving the soil and increasing fertility.