Method for comprehensively treating saline-alkali soil

A saline-alkali soil and comprehensive management technology, applied in the field of comprehensive saline-alkali soil management, can solve problems such as lack of seedlings, broken ridges or withering, crop root poisoning, and endangering the normal growth of crops, etc., to achieve the effect of improving soil fertility and improving soil

Inactive Publication Date: 2021-03-02
博域环保技术研究院(南京)有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of increasing soil exchangeable sodium ions is called soil alkalization. Because the salinized soil contains a lot of soluble salt, it hinders the root system of crops from absorbing water, affects the survival and growth of crops, and in severe cases leads to lack of seedlings, broken ridges or withering; alkaline soil due to alkali It has strong toxicity, has poisonous effect

Method used

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Examples

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Embodiment

[0028] Example: The engineering measures mainly include ditch drainage: use the ditches at all levels to drain excess surface water and groundwater, which has a significant effect on removing waterlogging and salt discharge and lowering the groundwater level; underground pipe drainage: use buried underground Pipeline trenches can remove excess water in the farmland soil and lower the groundwater level. The drainage of hidden pipes is better than that of open trenches. It occupies less land and buildings, and farming and transportation are not affected. The effect of drainage and salt discharge is stable, and the collapse of open trenches can be avoided. Slope siltation problem, easy to manage and maintain; vertical well drainage: also known as vertical drainage, that is, digging wells to pump groundwater, suitable for areas with sand and gravel aquifers with good water permeability within the depth of the well, and better results include intubation wells, large wells, etc. Aggr...

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Abstract

The invention relates to the technical field of saline-alkali soil treatment, in particular to a method for comprehensively treating saline-alkali soil. The method comprises the following steps of S1,engineering treatment, namely establishing a modern drainage system; S2, agricultural measures, namely including tillage, soil dressing, fertilization, sowing, crop rotation, intercropping, interplanting and rice planting; S3, biological measures, namely including salt-tolerant crop planting, green manure forage grass planting and afforestation; and S4, chemical measures, namely in the treatmentprocess, insisting on the basis of drainage, comprehensively treating the relationship of drainage, irrigation, storage and supplementation, correctly selecting the critical depth of an underground water level, performing irrigating in the drought period, performing draining in the waterlogging period, controlling the underground water level in the period of salt return, and supplementing a watersource after the underground water level is lowered due to the fact that the water source is filled, so that regional water-salt movement can be in a good state so as to achieve the aim of improving the soil. Engineering measures and various measures such as agriculture and biology are closely combined, a good farmland ecosystem of water, fertilizer, gas and heat necessary for crop growth is established according to local conditions, and the purposes of improving soil fertility and increasing agricultural yield are achieved.

Description

technical field [0001] The invention relates to the technical field of controlling saline-alkali soil, in particular to a method for comprehensively controlling saline-alkali soil. Background technique [0002] Saline-alkali land is formed by the comprehensive influence of climate, hydrogeology, terrain and other natural conditions in arid, semi-arid and coastal areas. In arid and semi-arid areas, due to strong ground evaporation, in places where the terrain is gentle, the surface runoff is not drained smoothly, and the groundwater is buried deep, the soluble salt in the soil-forming parent material moves with the water and accumulates in the topsoil layer under the action of evaporation, causing the land to produce salinization phenomenon. In the coastal areas, various coastal salinized lands with different degrees of salinization will also be formed due to seawater intrusion and immersion. [0003] The soil in saline-alkali land includes saline soil, alkaline soil, and v...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G17/00A01G22/00E03B3/08E02B11/00E02B13/00
CPCA01B79/02A01G17/005A01G22/00E02B11/00E02B13/00E03B3/08Y02P60/40Y02A40/10Y02A40/22
Inventor 王国红戈玮焜王成华
Owner 博域环保技术研究院(南京)有限公司
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