Saline-alkali-soil improvement agent

Abstract

The invention discloses a saline-alkali-soil improvement agent. The saline-alkali-soil improvement agent is prepared from, by weight, 50-60 parts of humic acid, 10-15 parts of zinc sulfate, 22-26 parts of mineral substances and 5-9 parts of plant hormones. The humic acid, the zinc sulfate, the mineral substances and the plant hormones are mixed to be even, and the saline-alkali-soil improvement agent is obtained. According to the saline-alkali-soil improvement agent, the soil alkalinity is neutralized through the humic acid and the zinc sulfate, carbonates in soil are removed, and the pH value, the soil alkalization degree and the total soil salt quantity of saline-alkali soil are reduced; sodium ions absorbed through soil colloid are replaced with active calcium ions and zinc ions, and are eluted out of soil along with rainfall or irrigation; meanwhile, the organic content of soil can be increased, the soil fertility is improved, soil is loosened, and the defects of medium elements and the defects of microelements in saline-alkali soil are overcome. By means of the saline-alkali-soil improvement agent, the improvement cost of saline-alkali soil is reduced, the improvement effect of saline-alkali soil is effectively improved, and the saline-alkali-soil improvement agent has the promoting effects on agricultural development and ecological protective forest construction in saline-alkali areas.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a saline-alkaline soil improver. Background technique [0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. According to unesco According to incomplete statistics from the Food and Agriculture Organization, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which 99.13 million hectares are in my country. my country's alkaline soil and alkaline soil formation, most of which are in the soil carbonate is related to the accumulation of Alkalinity It is generally higher, and plants in severe saline-alkali soil areas can hardly survive. [0003] In the process of utilization of saline-alkali land, simply put, it can be divided into light saline-alkali land, moderate saline-alkali land and heavy saline-alkali land. Light saline-alkali land means that its eme...

AI Technical Summary

Problems solved by technology

[0005] In order to improve the soil structure of saline-alkali soil, reduce the soil alkalinity, total salinity and pH value of saline-alkali soil, so that the improved saline-alkali soil can be used for agricultural development and ecological protection forest construction, the current common afforestation land Saline-alkali soil improvement methods include: (1) Digging ditches in the afforestation site to drain water to remove salt; (2) Applying sulfur, organic acid mixture and farmyard manure to the afforestation site and mixing them at 25 cm above the surface; Among them, the method of digging ditches for drainage and desalination has the problems of labor-intensive and time-consuming, a large waste of water resources and a short duration of effect (salinization can be accelerated after evaporation or irrigation), so this method needs to be repeated many times a year

Although the application of sulfur and gypsum can effectively reduce the pH value and harmful salinity of the soil, the effect is slow, the improved soil layer is shallow (25 cm) and easy to return to salt, and the input cost is high

Likewise, organic acid mixtures are costly and short-lived

Farmyard manure is cheap, but these materials are easy to decompose in high temperature seasons, and their action time is very limited. Excessive application will affect the growth of the root system of seedlings. Salt, and can cause pollution of plastic film, high cost

To sum up, the above several methods of use have the problem of poor improvement effect