Know what you know! Page 90 of compulsory biology 3 in senior high school of People's Education Edition clearly points out: "Producer: autotrophic organisms, mainly green plants."

Our teacher added that producers are divided into photoautotrophic types, such as: green plants, photosynthetic bacteria, cyanobacteria; Chemotactic autotrophic bacteria, such as nitrifying bacteria, sulfide bacteria and iron-containing bacteria.

So my answer is yes.

Page 90 on the fifth floor points out that decomposers are organisms that decompose organic matter in animal and plant remains into inorganic matter, while page 105 of compulsory organism I in the same edition points out that nitrifying bacteria can oxidize NH3 into HNO2 and then HNO3, from which energy can be obtained to synthesize carbohydrates from CO2 and water, so as to maintain their life activities. So it is not a decomposer but a producer.