How to manage the cornfield if it is not abandoned?

Straw returning technology can be used. At present, due to the industrial structure problems in China, the land can not be cultivated in contiguous plots, resulting in the disadvantage that large machinery can not work together and the purpose of returning straw to the field can not be realized. In order to save water, farmers have to burn the remaining straw. In addition, the state's support for biomass fuel is not enough, and there is little investment in technology and infrastructure for straw energy conversion. In a word, this is a systematic project, and it is a problem that a country and a society cannot completely solve for the time being. If the state attaches importance to it, it will change in a short time.