Soil reformation method

Abstract

The invention relates to a soil reformation method, which is characterized by including the steps: firstly, subjecting saline-alkali soil (1) to leaching or flushing with neutral water so as to remove redundant salt and alkali to obtain soil (2) with 6-7 pH value; secondly, detecting nitrogen, phosphorus and potassium in the soil (2) and the content of other medium-trace elements required by crops in the soil (2); thirdly, using organic fertilizer and slow release fertilizer as raw material to make up a 'directive fertilization' scheme (3) according to the element content of the soil (2) and needs of crops to be cultivated; fourthly, allowing the qualitative and quantitative organic fertilizer and slow release fertilizer to evenly permeate into the soil (2) according to the scheme (3) so as to obtain formulated soil (4); and fifthly, loading the formulated soil (4) into crop cultivation containers (5) which are nontoxic, watertight and less apt to degrade. By the method, underground water can be prevented from sending back salt and alkaline into the soil inside the containers at once and for all, and return of the salt and alkali is avoided.

Description

technical field [0001] The invention relates to a method for improving soil, in particular to a method for improving salinized soil. Background technique [0002] 1. Current state of the art: (1) The vegetation in the arid areas of northern my country is weak, and the ability to absorb and digest saline-alkali components is poor. The water-soluble saline-alkali brought up when the groundwater rises and evaporates will be deposited in the surface soil, causing vegetation damage over time. The land is completely salinized. (2) In coastal areas where the concentration of groundwater is high in salinity, a large amount of water-soluble salinity brought up by the evaporation of groundwater is deposited in the surface soil, causing vegetation to be unable to survive at all, and the land is severely salinized. (3) Long-term unreasonable and excessive application of chemical fertilizers and pesticides has accelerated the process of soil salinization and expanded the scope of saline-...

AI Technical Summary

Problems solved by technology

(2) In coastal areas where the concentration of groundwater is high in salinity, a large amount of water-soluble salt-alkali brought up by the rising and evaporating groundwater is deposited in the surface soil, making vegetation unable to survive at all, and the land is severely salinized

2, the problem of prior art or shortcoming: (1) though can wash away redundant saline-alkali with the way of above-mentioned water washing salinity, correct the pH value of soil, also wash away most of soil nutrient simultaneously, have seriously reduced soil Fertility

(2) The process of water elution of salinity does not block the passage of groundwater with saline-alkali rising and evaporation. Therefore, 3-5 years after treatment, the soil will still return to saline-alkali and become salinized again