Preparation method and application of biomass charcoal rod

The invention discloses a preparation method and application of a biomass charcoal rod. The biomass charcoal rod is prepared by mixing the following raw materials in parts by mass: 30-35 parts of rice straw charcoal, 30-35 parts of corn straw charcoal and 25-30 parts of composite Portland cement. The biomass charcoal rod is applied to a device for recovering nutrient substances in water, and is used for adsorbing ions such as NH4 and PO4 and other organic matter. The biomass charcoal rod has high mechanical strength, solves the problem of river downstream eutrophication caused by overhigh nitrogen and phosphorus content of water after irrigation of agricultural farmland in villages and towns, and is suitable for but not limited to fishery and planting industries after N and P in farmland rice recession are recovered. 本发明公开一种生物质炭棒的制备方法与应用，包括以下质量份的原料混合制成：水稻秸秆生物炭30-35份、玉米秸秆生物炭30-35份、复合硅酸盐水泥25-30份，将生物质炭棒应用在回收水中营养物质的装置中，用于吸附NH4+和PO42-等离子和其他有机物；本发明生物质炭棒机械强度高，解决了村镇农业农田用水灌溉后水质氮磷含量过高导致河道下游富营养化的问题，回收农田水稻退水中N、P后，