Method for improving saline-alkali land by using pioneer plants

Abstract

The invention is applicable to the technical field of saline-alkali land improvement, and provides a method for improving the saline-alkali land by using pioneer plants. The method comprises the stepsof mixing modifiers phosphogypsum and boric acid and then scattering the mixture on the saline-alkali land subjected to tillage for even mixing to obtain primary treated soil; adding the modifiers slow release binder, humic acid, CMC (sodium carboxymethylcellulose) and zeolite powder to the primary treated soil and mixing evenly to obtain improved soil, wherein the modifier in the improved soil comprises 40-50 parts of phosphogypsum, 20-26 parts of boric acid, 10-15 parts of slow-release binder, 8-15 parts of humic acid, 2-8 parts of CMC and 1-6 parts of zeolite powder; raising the ground ofthe improved soil into a mound-like shape, ridging and building a fish scale pit on a ridge; planting the pioneer plants into the fish scale pit. Therefore, the method can increase the content of nitrogen, phosphorus and potassium in the saline-alkali soil, and reduce the pH, the conductivity and the alkalinity of the saline-alkali soil.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a method for improving saline-alkali land by using pioneer plants. Background technique [0002] With the continuous development of the economy, the contradiction of energy shortage in my country is very acute, and the development of biomass energy must ensure the premise of "food security"; the development and utilization of coastal tidal flat saline-alkali land can provide food sources and become the production carrier of important economic plants such as energy; but , Due to the high salt content and poor water and fertilizer retention capacity of saline-alkali land, most plants cannot grow, especially in saline-alkali land, the utilization rate and economic value are relatively low. [0003] Pioneer plants have extremely tenacious vitality and can grow under harsh conditions such as insufficient soil nutrients. For saline-alkali land, their vitality is s...

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Problems solved by technology

[0002] With the continuous development of the economy, the contradiction of energy shortage in my country is very acute, and the development of biomass energy must ensure the premise of "food security"; the development and utilization of coastal tidal flat saline-alkali land can provide food sources and become the production carrier of important economic plants such as energy; but , Due to the high salt content and poor water and fertilizer retention capacity of saline-alkali land, most plants cannot grow, especially in saline-alkali land, the utilization rate and economic value are relatively low

[0003] Pioneer plants have extremely tenacious vitality and can grow under harsh conditions such as insufficient soil nutrients. For saline-alkali land, their vitality is stronger than that of ordinary plants; however, there are few studies on using pioneer plants to improve saline-alkali land and achieve better results.

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