工业污泥用于根瘤菌菌剂生产的新方法

接种根瘤菌技术在农业生产中应用广泛。根瘤菌菌剂的生产涉及两大因素：根瘤菌生长培养基和用于固体菌剂生产的载体。最近,全世界一种广泛存在的可再生废料——污水污泥正被研究用作接种根瘤菌剂生产的培养基和载体。研究表明,污泥通常含有足以维持根瘤菌生长的氮元素,其重金属含量也较低。并且可以通过污泥预处理或者添加营养素的方法优化其生长条件。同普通菌剂相比,污水污泥中生长的根瘤菌能够使植物进行有效的结瘤和固氮。这种接种根瘤菌剂生产的新方法为废料处理和菌剂生产提供了一种安全、经济、环保的选择。

New Approach for Rhizobial Inoculant Production Using Industrial Sludge

Inoculating legumes with rhizobial inoculants is a universal agriculture technique. The process of production involves a step in which a large number of cells are produced, followed by the product formulation. Recently, Wastewater sludge has shown good potential for inoculant production as a growth medium and a carrier. Sludge usually contains nutrient elements at concentrations abundant enough to sustain rhizobial growth and heavy metals are usually below the recommended level. In some cases, growth conditions can be optimized by a sludge pre-treatment or by the addition of nutrients. Inoculants produced in wastewater sludge are efficient for nodulation and nitrogen flaxation with legumes as compared to standard inoculants. This new approach described in this review offers a safe environmental alternative for both waste treatment and inoculant production.