Desert area saline-alkali soil amelioration modifying agent and preparation method

Abstract

The invention discloses a desert area saline-alkali soil amelioration modifying agent and a preparation scheme. The desert area saline-alkali soil amelioration modifying agent is prepared from raw materials in parts by mass: 5 to 18 parts of pH conditioning agent, 15 to 36 parts of inorganic fertilizer, 28 to 45 parts of organic fertilizer, 2 to 4 parts of halophilic bacteria, 4 to 6 parts of rhizopus, 1 to 3 parts of humic acid, 3 to 5 parts of actinomycetes, 2 to 4 parts of rhizobium, 3 to 7 parts of yeast, 0.01 to 0.04 part of auximone and 1 to 2 parts of deodorant. The desert area saline-alkali soil amelioration modifying agent disclosed by the invention can obviously improve the germination rate and the survival rate of plants, reduces a pH value and salt content of saline-alkali soil, improves organic content of the soil and enables the soil to be more suitable for plant growth.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land treatment, in particular to a soil improvement agent for saline-alkali land treatment in desert areas and a preparation method thereof. Background technique [0002] Saline-alkali land refers to a type of land where excessive salt accumulation even affects the normal growth of crops. The area of ​​saline-alkali land in the world is 954.38 million hectares, while my country accounts for 99.13 million hectares. The formation of saline-alkali land is often due to low precipitation and evaporation. Large, the salt dissolved in water is easy to accumulate on the soil surface, but the soil in these areas does not always accumulate a large amount of salt. "Desalination", the surface water evaporates strongly in spring, and the salt in the groundwater accumulates on the soil surface as the capillary water rises, resulting in "returning salt". [0003] In recent years, with the interference of hu...

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Problems solved by technology

[0003] In recent years, with the interference of human economic and social activities and the intensification of natural disasters, the ecological environment in the desert Gobi region of Northwest China has continued to deteriorate. The dry climate, poor soil and heavy salinity have greatly reduced the vegetation coverage. A large-scale afforestation project has been carried out in the arid desert heavy saline-alkaline area. In order to improve the survival rate of the planting plants, the salt will be washed according to the principle of "desalination" of the soil itself before planting plants. However, due to the low rainfall in these areas, After washing the salt, the surface of the soil is easy to gather a large amount of salt again, causing the survival rate of the plant species to be too low. This will not only fail to improve the local ecological environment, but also waste a lot of human and financial resources

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