Method for promoting combination of iron and carbon in soil by heating and method for detecting content of iron and carbon in soil

The invention belongs to the technical field of soil analysis. The invention particularly relates to a method for promoting iron-carbon combination in soil by heating and a method for detecting the iron-carbon content in soil. The method comprises the following steps: mixing a soil sample with rice straw to obtain a mixture, adjusting the water content of the mixture to be 45-65%, and culturing for 40-50 days to obtain a soil product; the mass ratio of the soil sample to the rice straw is 100: (3-8); the culture temperature is 4-45 DEG C. Data analysis shows that the iron and carbon content in the red soil is reduced by heating, but the iron and carbon content in the black soil is increased by heating. Meanwhile, the organic carbon in the red soil is promoted to be combined with the iron oxide in a surface adsorption manner by heating. The temperature rise promotes the iron oxide to selectively fix fat carbon and polysaccharide carbon from microorganisms. 本申请属于土壤分析技术领域。具体涉及一种升温促进土壤铁碳结合的方法与一种土壤铁碳含量的检测方法。本发明的升温