Method for returning straws of crops to field by utilizing microbial fermentation

Abstract

The invention discloses a method for returning straws of crops to a field by utilizing microbial fermentation, comprising the following steps of: putting sundried straws of the crops into a methane tank together with floras, adding water until all straws are submerged, isolating the methane tank from air for anaerobic fermentation after water addition is finished, then pumping supernatant liquor to a storage tank for standby after the fermentation is finished, continuously adding new materials in the residual part for fermentation, pumping the part remaining in the methane tank to the land tobe ploughed to use as a base fertilizer after any one fermentation period is finished, and then ploughing the land next day. The straws of the crops are processed by the combination method of microbial community and the traditional methane tank and are returned to a farmland ecosystem so that the purpose of returning the straws to the field is achieved. The method of the invention has no use of special organic fertilizers and reduces fertilizer consumption so as to save cost, protect environment and simultaneously and greatly enhance yields.

Description

technical field [0001] The invention relates to a field returning method in the field of agricultural technology, in particular to a method for returning crop straws to the field using microbial fermentation. Background technique [0002] With the improvement of farmers' living standards and the development of science and technology, farmers no longer need to use straw to cook rice and water, and straw has become a kind of agricultural waste. Farmers generally return the straw to the field by burning it on the spot, which not only wastes resources, but also pollutes the air. At present, the main methods of returning straw to the field include direct deep plowing and returning animals to the field, etc. . The technology of returning to the field after fermentation in a biogas tank has existed for a long time, but there are many shortcomings. The most important thing is that the fermentation time is long, and the pathogenic bacteria and insect eggs cannot be completely killed...

AI Technical Summary

Problems solved by technology

[0003] At present, although biogas digesters have been fully mature technically and have been popularized and applied for a long time, there is no relevant patent registration; there are many patents on straw fermentation technology, but they are all applied to the production of animal feed and straw returning to the field , There is no relevant report on soil improvement