Saline-alkali soil deep-improving method by chemical-biological technology

A biotechnology and saline-alkali land technology, applied in the field of deep improvement, can solve problems such as saline-alkali backlash, seawater intrusion, and unsatisfactory effects, and achieve the effects of reducing salinity, preventing underground salt return, and good use value

Active Publication Date: 2015-04-01
SHANDONG SUNWAY LANDSCAPE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method also has obvious defects: it is easy to cause secondary compaction of the soil, and the saline-alkali backlash is serious
Biological improvement requires the smallest investment, but the requirements for salt-tolerant plants are relatively high. It is necessary to have a better understanding of the salt-tolerant mechanism of halophytes, and biological improvement is often slow to take effect
[0017] Therefore, the effect of adopting the traditional single governance method is not ideal, and due to the serious mutual constraints among the various methods, simply integrating the tradition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A method for deeply improving saline-alkali ground with chemical-biological technology, comprising the following steps:

[0058] S1. Using chemical measures to improve the chemical composition of saline-alkali land

[0059] First, add humic acid fertilizers to the saline-alkali soil in an amount of 200kg / mu. The humic acid fertilizers include the following components by weight: 15 parts by weight of biochemical fulvic acid, 6 parts by weight of water-soluble silicon fertilizer, furfural residue 20 parts by weight, 40 parts by weight of straw;

[0060] Then, add chemical acid fertilizer in saline-alkali soil, the selected calcium fertilizer of described chemical acid fertilizer comprises calcium superphosphate and calcium nitrate fertilizer, reduces soil pH value, simultaneously, applies physiological acid fertilizer, comprises ammonium sulfate and nitrate phosphate fertilizer;

[0061] Finally, add mineral chemical fertilizers to the saline-alkali soil in an amount of ...

Embodiment 2

[0078] A method for deeply improving saline-alkali ground with chemical-biological technology, comprising the following steps:

[0079] S1. Using chemical measures to improve the chemical composition of saline-alkali land

[0080] First, add humic acid fertilizers to the saline-alkali land in an amount of 220kg / mu. The humic acid fertilizers include the following components by weight: 20 parts by weight of biochemical fulvic acid, 8 parts by weight of water-soluble silicon fertilizer, furfural residue 25 parts by weight, 50 parts by weight of straw;

[0081] Then, add chemical acid fertilizer in saline-alkali soil, the selected calcium fertilizer of described chemical acid fertilizer comprises calcium superphosphate and calcium nitrate fertilizer, reduces soil pH value, simultaneously, applies physiological acid fertilizer, comprises ammonium sulfate and nitrate phosphate fertilizer;

[0082] Finally, add mineral chemical fertilizer to the saline-alkali land, the addition amo...

Embodiment 3

[0103] A method for deeply improving saline-alkali ground with chemical-biological technology, comprising the following steps:

[0104] S1. Using chemical measures to improve the chemical composition of saline-alkali land

[0105] First, add humic acid fertilizers to the saline-alkali land, the addition amount is 240kg / mu, and the humic acid fertilizers include the following components by weight: 25 parts by weight of biochemical fulvic acid, 10 parts by weight of water-soluble silicon fertilizer, furfural slag 30 parts by weight, 60 parts by weight of straw;

[0106] Then, add chemical acid fertilizer in saline-alkali soil, the selected calcium fertilizer of described chemical acid fertilizer comprises calcium superphosphate and calcium nitrate fertilizer, reduces soil pH value, simultaneously, applies physiological acid fertilizer, comprises ammonium sulfate and nitrate phosphate fertilizer;

[0107] Finally, add mineral chemical fertilizer to the saline-alkali land, the ad...

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Abstract

A saline-alkali soil deep-improving method by chemical-biological technology includes steps of S1, improving chemical components of the saline-alkali soil by chemical measures, firstly, adding humic acid fertilizer into the saline-alkali soil, then adding chemically acidic fertilizer into the saline-alkali soil, applying physiologic acidic fertilizer, and finally adding mineral chemical fertilizer into the saline-alkali soil; S2, improving the saline-alkali soil by biological measures, firstly, planting suaeda salsa of euhalophyte on the saline-alkali soil to be treated, or planting scutellaria strigillosa hemsl when salt content of the saline-alkali soil ranges from 0.2% to 0.3%. The saline-alkali soil deep-improving method provides a feasible, economic and efficient scheme for improving the saline-alkali soil in coastal regions, improvement time is short, effect is good and no backflow is caused after improvement.

Description

technical field [0001] The invention relates to a method for improving saline-alkali land, in particular to a method for deeply improving saline-alkali land by integrating biological technology and chemical technology. Background technique [0002] With the deterioration of the ecological environment, soil salinization is expanding at an unprecedented speed. Therefore, rational use of saline-alkali land, thorough improvement of saline-alkali land, and cultivation of saline-alkali-resistant plant varieties will be the future development direction. [0003] As far as my country is concerned, the total population has reached 1.3 billion, and the total cultivated land area is less than 2 billion mu, but the total area of ​​saline-alkali land has reached 2.045 billion mu, and its area is constantly expanding; the per capita cultivated land and fresh water resources in my country are far lower In addition, in the process of modernization, arable land shrinking, fresh water polluti...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01C21/00C05G3/04C05D11/00C05G3/80
CPCA01B79/00A01B79/02C05B1/02C05G3/80C05C1/00C05C3/00C05C5/04C05F11/02
Inventor 王胜荆瑞英丁雪梅时彦平吴伟斌尹金珠
Owner SHANDONG SUNWAY LANDSCAPE TECH
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