土壤微生物生物量的测定模型
(1) 细菌生物量计算模型:
式中， 
为生物量；
为细菌纯培养悬液的总干重；
为细菌纯培养悬液中的总数；
为
干土中的细菌总数。
(2)放线菌和真菌生物量计算模型:
式中，
为生物量；
为定量
悬液菌丝的总干重；
为定量
悬液菌丝涂片的显微镜视野平均长度；
为土壤稀释悬液菌丝涂片中菌丝的平均长度；
为干土百分比；10为
稀释土样悬液与
菌丝悬液的比值。
参考资料
郭继勋，祝廷成：羊草草原土壤微生物量的数量和生物量。生态学报, 1997, 17(1)
Biological retention technology mainly through the matrix filtration, adsorption and microbial action to purify the infiltration of runoff rainwater. Because it can temporarily store the rain and then slowly into the surrounding soil, therefore, can play to reduce the surface rainwater peak flow, reduce runoff pollution and so on. Biological retention technology can include many forms, the more commonly used biological retention pool, concave green space, ecological grass ditch, plant buffer zone, rain garden and ecological wetlands. It can also include rainwater reuse facilities, soil improvement and so on.
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