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在以色列,蘑菇栽培所需的泥炭土都靠进口,价格非常昂贵,因而蘑菇覆土代用品的研究显得极为重要。用经过沼气发酵的禽粪即沼气渣代替泥炭土栽培蘑菇的试验已获得成功。沼气渣的再利用不仅给能源厂带来了更大的收益,也帮助解决了下脚料的存放问题。材料与方法沼气渣是禽粪经中温沼气发酵后剩下的固体物质。沼气发酵的下脚料约含11％的干物质。将此下脚料用清水冲洗,然后置于摇动筛子内,将固体和液体部分分开。固体部分即沼气渣,约含25％的干物质。
In Israel, the peat soils required for mushroom cultivation are imported and the price is very expensive. Therefore, the research on mushroom-soil substitutes is of paramount importance. Experiments have been made to replace mushrooms with peat dregs, ie biogas residue, which has been subjected to biogas fermentation. Re-use of biogas residue not only brought greater benefits to energy plants, but also helped to solve the problem of storage of waste materials. Materials and methods Biogas residue is the solid matter left after poultry manure fermentation at medium temperature. Biogas fermentation scraps contain about 11% dry matter. Rinse the off-take with clean water and place in a rocking screen to separate the solids from the liquid. The solid part, biogas residue, contains about 25% dry matter.