Method for improving saline land soil by desulfurized gypsum and microorganism compounding

Abstract

The invention discloses relates to the field of saline land soil improvement and specifically relates to a method for improving saline land soil by desulfurized gypsum and microorganism compounding. The method for improving saline land soil by desulfurized gypsum and microorganism compounding comprises following steps: S1. microorganism selecting; S2. microorganism compounding; S3. soil preliminary processing; S4. microorganism applying; S5. soil reprocessing; S6. microorganism detecting; S7. microorganism replenishing; S8. microorganism re-detecting. According to the provided method for improving saline land soil by desulfurized gypsum and microorganism compounding, after microorganism application, soil nutrients are activated, soil desalination efficiency is increased and crop growth is promoted which provides favorable conditions for desulphurized gypsum improving salinized arable land; after the application of desulphurized gypsum, soil structure is improved and soil pH value is reduced so that the effectiveness of microbial agents is enhanced.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali soil improvement, in particular to a method for improving saline-alkali soil by compounding desulfurized gypsum and microorganisms. Background technique [0002] Saline-alkali land (saline soil) is widely distributed in more than 100 countries and regions in the world, with an area of ​​nearly 1 billion hectares in the world, of which China alone has 36.3 million hectares, accounting for nearly 5% of my country's usable land. Northwest inland, Huanghuaihai Plain, Northeast Songnen Plain, Gansu, Ningxia, Inner Mongolia and other regions. Only 5.766 million hectares of saline-alkali land has been reclaimed and planted in China, but most of the area remains to be utilized. my country's coastal saline-alkali land involves 11 coastal provinces, municipalities, and autonomous regions, mainly located in the provinces north of the Yangtze River Estuary, accounting for about 7% of my country's saline...

AI Technical Summary

Problems solved by technology

[0003] At present, measures to improve saline-alkali land include irrigation and drainage methods (such as "well irrigation and well drainage" method, "strong drainage and strong irrigation" method), which require huge investment in water conservancy facilities and high maintenance costs; Physical methods such as mulching, but this not only needs to transport a large amount of foreign soil or straw, but also often causes huge damage to the farmland where the foreign soil comes from; chemical methods, that is, use some acidic salts to improve saline-alkali land

However, these methods are very limited in effect and difficult to promote for coastal areas, which will be continuously eroded before and after treatment due to directly facing the sea.