Method for improving saline-alkali land by solid-liquid bio-organic fertilizer produced from slaughtering and breeding waste sewage and diseased and dead poultry straw biogas residue and biogas slurry

Abstract

The invention discloses a method for improving saline-alkali land by solid-liquid bio-organic fertilizer produced from slaughtering and breeding waste sewage and diseased and dead poultry straw biogasresidue and biogas slurry, and belongs to the technical field of saline-alkali land improvement. The method is to establish a grid management module; after the fall of the geogas and returning of thestraw to the field in autumn, the solid organic fertilizer and the liquid bio-organic fertilizer are applied to the mild saline-alkali land, the moderate saline-alkali land or the heavy saline-alkaliland that is to be improved, and after the rise of the geogas in spring, sowing is performed, the liquid bio-organic fertilizer is applied, and after the emergence of seedlings, the liquid bio-organic fertilizer is applied by foliar spraying or watering or drip irrigation; the steps are repeated for continuous non-stop cultivation management for 3 years to 5 years. The method of the invention canimprove the saline-alkali soil, does not require irrigation and salt elimination, and can fundamentally solve the problem of saline-alkali hardening, barrenness, no water storage, and almost no microorganisms.

Description

technical field [0001] The invention relates to a method for improving saline-alkali land with solid-liquid bio-organic fertilizer produced from slaughtering and breeding waste sewage and biogas residue from diseased and dead livestock and poultry, and belongs to the technical field of saline-alkali land improvement. Background technique [0002] There are about 99.13 million hectares of saline-alkali land in my country. Most of the formation of alkalized soil in China is related to the accumulation of soluble salts in the soil, which contains more water-soluble salts or alkaline substances. Most of the soil is compacted into lumps and has poor water permeability. It is mainly characterized by being sticky when wet, hard when dry, and poor air permeability. Due to the high salinity and high alkalinity, the content of humic acid and beneficial bacteria in the soil is extremely low; therefore serious In saline-alkali soil areas, plants can hardly survive. Saline-alkali land i...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that saline-alkali land is not suitable for plant growth and the existing treatment methods use more water and are prone to alkali return, the present invention provides a method for comprehensively improving saline-alkali land by using solid and liquid bio-organic fertilizers produced from slaughter waste wastewater. The technical scheme adopted is as follows:

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