Technology for preparing biological charcoal applicable to southern and northern rice regions

The invention discloses a technology for preparing biological charcoal applicable to southern and northern rice regions, and belongs to the field of biological charcoal. The technology has the advantages that the biological charcoal prepared by the aid of the technology has ion adsorption and exchange ability and certain adsorption capacity, the nutrient element adsorption ability and the nutrient availability can be improved, the cation or anion exchange capacity of soil further can be improved, accordingly, the fertilizer conservation ability of the soil can be improved, the biological charcoal is applicable to both southern rice and northern rice, and the southern rice increase production rate can be 2-3% or 0.5-1.2%. 本发明公开了种制备适合南北方稻区的生物炭制备技术，属于生物炭领域。本发明制得的生物炭有离子吸附交换能力及定吸附容量，能提高对营养元素的吸附能力和增加养分有效性，还可提高土壤阳离子或阴离子交换量，从而可增加土壤保肥能力，无论使南方还是北方稻都适合使用，对南方的水稻增产率为2～3％，对南方水稻增产率为0.5～1.2％。