Straw and biogas slurry synchronous returning method and machine

Abstract

The invention provides a straw and biogas slurry synchronous returning method and a machine, and belongs to the farmland preparation technology and machines. The method includes the steps that crop straw and stubbles in fields are smashed and scattered on the fields, biogas slurry generated after anaerobic fermentation of biomass is sprayed on the smashed straw and the stubbles, soil is turned over and tilled by means of a moldboard plow, the smashed straw, the smashed stubbles and the biogas slurry are buried in and covers the soil together, and finally the surfaces of the fields are compacted and leveled. The machine comprises a machine frame assembly, a three-point suspension assembly, a straw and stubble smashing cutter shaft assembly, a walking wheel assembly, a biogas slurry spraying assembly, a moldboard plow assembly and a compacting assembly, wherein the three-point suspension assembly, the straw and stubble smashing cutter shaft assembly, the walking wheel assembly, the biogas slurry spraying assembly, the moldboard plow assembly and the compacting assembly are arranged on the machine frame assembly. The method is simple in process, the straw returning effect is good, quality is high, soil restoration is facilitated, work cost is low, the machine is reasonable in structure, the use requirement for straw and biogas slurry synchronous returning is met, work efficiency is high, and usage is reliable.

Description

technical field [0001] The invention belongs to farmland preparation operation technology and equipment, and mainly relates to an operation method and equipment for synchronously returning straw and biogas slurry to the field. Background technique [0002] my country is a large agricultural country, which produces a large amount of crop straw every year. At present, returning straw to the field is an important way of straw utilization and an important measure for sustainable agricultural development. It has good economic, ecological and social benefits. Although straw returning to the field is a good way to utilize straw, but because the straw is mainly composed of lignin, cellulose and hemicellulose, and the C / N is high, the moisture content is low, which leads to the straw rot and degradation after returning to the field. The slow speed is not conducive to the utilization of straw, and affects the sowing and growth of crops in the next season. It has become a bottleneck pr...

AI Technical Summary

Problems solved by technology

Although straw returning to the field is a good way to utilize straw, but because the straw is mainly composed of lignin, cellulose and hemicellulose, and the C / N is high, the moisture content is low, which leads to the straw rot and degradation after returning to the field. The speed is slow, which is not conducive to the utilization of straw, and affects the sowing and growth of crops in the next season. It has become a bottleneck problem restricting the application and promotion of straw returning technology

For the above problems, in Heilongjiang, Jilin, Inner Mongolia and other areas in northern my country, due to the dry climate and low temperature in autumn, the moisture content of crop straw is lower, the degree of lignification and fibrosis is more serious, and it is more difficult to rot and degrade after returning to the field.

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