CN104206066B

CN104206066B - Soil improvement method for saline-alkali soil

Info

Publication number: CN104206066B
Application number: CN201410419814.9A
Authority: CN
Inventors: 谢天寿
Original assignee: Huizhou Dongjiang Landscape Engineering Co ltd
Current assignee: Huizhou Dongjiang Landscape Engineering Co ltd
Priority date: 2014-08-25
Filing date: 2014-08-25
Publication date: 2017-01-25
Anticipated expiration: 2034-08-25
Also published as: CN104206066A

Abstract

The invention relates to a soil improvement method for saline-alkali soil. The method is characterized by comprising the following processing steps: bulldozing, i.e. shoving soil on the surface of the saline-alkali soil which needs to be improved; pipe laying, i.e. laying leaky pipeline systems on the ground of which the surface soil is shoved; stone laying, i.e. laying a broken stone layer in gaps between the pipeline systems; fertilizer covering, i.e. covering an organic fertilizer layer on the cobblestone layer; soil leveling, i.e. raking the surface soil in the bulldozing step broken and then covering the organic fertilizer layer with the broken surface soil; alkali washing, i.e. wetting the surface soil with water or aqueous solution to wash out excessive saline-alkali substances in the soil. The broken stone layer in the soil improvement method cuts off salt conveying from soil capillary water to the ground surface, takes a good salt accumulation prevention effect after washing out alkali and is beneficial to durability and stability of improving the saline-alkali soil; moreover, microbiological degradation of the organic fertilizer also can reduce alkalinity of the soil; the method can be used for comprehensively treating the saline-alkali soil.

Description

A kind of saline-alkali soil improvement method

Technical field

The present invention relates to soil improvement field, particularly to a kind of saline-alkali soil improvement method.

Background technology

Salt-soda soil is a species of salt aggregation, refers to that contained salinity inside soil has influence on the normal life of crop Long, according to UNESCO and food and agricultural organization's incomplete statistics, the area in whole world salt-soda soil is 9.5438 hundred million public affairs Hectare, wherein China is 99,130,000 hectares.China's alkaline earth and the formation of alkali-affected soil, most of accumulative with Carbonates In Soil Relevant, thus basicity is generally higher, serious salt affected soil regional plant can hardly be survived.At present, domestic to salt-soda soil Processing method generally comprise salt discharge method and pressure salt method etc., but they all have weak point, and for example, salt discharge method is by using Substantial amounts of fresh water is rinsed for a long time to salt-soda soil and so that the salinity of saline and alkaline ground surface is reduced.Pressure salt method is to utilize natural precipitation Or artificial flood irrigates, partly saline and alkaline hole along soil, crack etc. is made to permeate downwards, by the salinity of topsoil with water band To bottom, although said method can make the salinity of saline and alkaline surface layer reduce, it is permanent not to keep, and needs substantial amounts of Water source, therefore, urgently need to develop a kind of water consumption little and can be permanently effective improvement salt-soda soil method, salt can be made The planting technique in the suitable gardens in alkali ground.

Content of the invention

The technical problem to be solved is to provide a kind of saline-alkali soil improvement method.

The technical problem to be solved is achieved by the following technical programs:

A kind of saline-alkali soil improvement method, including following process step:

Bulldoze, described soil-shifting is that the salt-soda soil surface soil improveing need is pushed open；

Pipe laying, described pipe laying is the tubing laying seepage on the ground pushing topsoil；

Paver, described paver is to lay a metalling in the gap of tubing；

Lid is fertile, and described lid fertilizer is to cover a fertilizer bed of material on cobblestone layer；

Grading, described grading is that the table soil harrow broken in soil-shifting step is then covered by fertilizer layer；

Soda, described soda is with water or solution immersion topsoil, salt alkaloid substance excessive in eluting soil.

Preferably, described metalling is the cobblestone layer of particle diameter 0.5-3cm, and rubble thickness is 3-10cm.

Preferably, described fertilizer thickness of feed layer is 3-10cm.

Preferably, described tubing is interlocked the latticed of connection for pipeline transverse and longitudinal, and the area of the little lattice of any of which is 0.5-1.5 square metre, this tubing at least provided with one can inject effusion be opened on earth's surface, pipe diameter is 3- 7cm, tube wall has the weepage holes that aperture is that 0.5-2mm does not wait.

Preferably, the table soil thickness on the described fertilizer bed of material is more than 30cm.

Further, described soda step can be implemented 1-4 time according to salinization of soil degree, 3-5 days after each soda Table soil is implemented to implement soda next time again within 1-3 days after harrow broken is processed.

Preferably, described effusion is dry yeast and water quality than the aqueous solution for 1:2000-5000.

Preferably, mistake 50 mesh sieve containing humic acidss more than 60% can be mixed in described grading step in the table soil of harrow broken Weathered coal, mixed ratio be every square metre 0.5-3 kilogram.

Preferably, the soil after soda process can put into Lumbricuss loam, and supply volume is not less than 20 for every square metre Only.

The invention has the following beneficial effects:

1. the metalling of the present invention blocks soil capillary water and conveys salinity to earth's surface, serves and prevents the accumulation of salt in the surface soil well Effect, be conducive to salt affected soil improvement persistency and steadiness.

2. the fertilizer bed of material of the present invention is laid on metalling, and fertilizer fertilizer forms humic through microbial decomposition, conversion Matter, can improve the buffer capacity of soil, and can act on formation sodium humate with sodium carbonate, reduce surface soil alkalinity.With pipeline system The seepage of system, moistening, decomposition rate quickening, and in effusion, insert dry yeast, accelerated decomposition speed.

3. the present invention mixes the weathered coal of mistake 50 mesh sieve containing humic acidss more than 60% in table soil, for topsoil Saline and alkaline neutralization serves good effect, and the loam plus Lumbricuss, and the improvement for topsoil salinization of soil is entered One step is consolidated.

Brief description

The cross-sectional view that Fig. 1 is implemented for modification method of the present invention.

Specific embodiment

Below in conjunction with the accompanying drawings 1 and embodiment the present invention will be described in detail.

The present embodiment have chosen the typical beach saline land in two pieces of coastal Huidong County of Huizhou City, is labeled as a, b, wherein a face Amass as 12 mu, be land use for greening in a development of real estate Sea View Room cell；B area is 15 mu, is a typical coastal high salinity Wasteland, almost not even a blade of grass grows.A, b in soil data such as table 1 below is recorded before experiment.

A ground, sequentially passes through six steps such as soil-shifting, pipe laying, paver, lid fertilizer, grading, soda, and wherein metalling 1 thickness is about 7cm, fertilizer thickness of feed layer is about 6cm, and tubing 4 is in little square lattice laying, and each square net area is 1 square Rice, inside pipe wall diameter 5cm, effusion is for dry yeast and water quality than the aqueous solution for 1:3000, table soil 3 thickness about 45cm, air slaking Coal participates in table soil according to the amount of every square of 1.5kg, and soda twice, is implemented at harrow broken for 3 days after first time soda to table soil 3 altogether Reason, implemented soda next time after 2 days, after soda twice on the soil processing the quantity according to 50 every square about Throw in Lumbricuss.Survey data after one week and obtain a1, data measured a2 after four months, record case such as table 1 below.

Sequentially pass through six steps such as soil-shifting, pipe laying, paver, lid fertilizer, grading, soda, wherein metalling 1 thickness is about b 10cm, fertilizer thickness of feed layer is about 7cm, and tubing 4 is in little square lattice laying, and each square net area is flat for 1 Square rice, inside pipe wall diameter 5cm, effusion is for dry yeast and water quality than the aqueous solution for 1:3500, table soil 3 thickness about 40cm, wind Change coal and participate in table soil, soda 3 times altogether according to the amount of every square of 1kg, harrow broken is implemented to table soil 3 and processes within 3 days after first time soda, Implemented second soda after 2 days, through 4 days, harrow broken again is implemented to table soil 3 and processes, then through 3 days, table soil 3 is implemented with the Three times soda is processed.After 3 soda, on the soil processing, the quantity according to 60 every square about throws in Lumbricuss.One Survey data after week and obtain b1, data measured b2 after four months, record case such as table 1 below.

Table 1:(salt ion content %)

	ph	Total salt (%)	hco₃ ^-	cl^-	so₄ ^2-	ca²⁺	mg²⁺	k⁺	na⁺
										a	8.98	0.42	0.0352	0.0447	0.1529	0.0334	0.0125	0.0193	0.0877
b	8.57	0.36	0.0111	0.0047	0.1736	0.0556	0.0156	0.0185	0.0563
										a1	8.25	0.33	0.0177	0.0375	0.1181	0.0246	0.0109	0.079	0.0417
b1	7.93	0.31	0.0102	0.0051	0.1327	0.0342	0.0112	0.069	0.0315
										a2	7.87	0.28	0.0145	0.0367	0.1140	0.0207	0.0092	0.057	0.0254
b2	7.81	0.26	0.0093	0.0062	0.1121	0.0302	0.0101	0.048	0.0213

After treated four months, afforestation cultivation is implemented in the salt-soda soil after two pieces are processed, and plants and is implanted with Flos Plumeriae Acutifoliae, purple The locally common garden plantses such as common vetch flower, common alstonia, fujian tea, pittosporum tobira, all to survive, through months of observations, do not occur Dead and a large amount of blade is withered and yellow the phenomenon such as to come off.

Embodiment described above only have expressed embodiments of the present invention, and its description is more concrete and detailed, but can not Therefore it is interpreted as the restriction to the scope of the claims of the present invention, as long as the skill being obtained in the form of equivalent or equivalent transformation Art scheme, all should fall within the scope and spirit of the invention.

Claims

1. a kind of saline-alkali soil improvement method is it is characterised in that include following process step:

Pipe laying, described pipe laying is the tubing (4) laying seepage on the ground pushing topsoil；

Paver, described paver is to lay a metalling (1) in the gap of tubing；

Lid is fertile, and described lid fertilizer is to cover a fertilizer bed of material (2) on metalling；

Grading, described grading is that table soil (3) harrow broken in soil-shifting step is then covered by the fertilizer bed of material；

Soda, described soda is with water or solution immersion topsoil, salt alkaloid substance excessive in eluting soil；

Described metalling (1) is the cobblestone layer of particle diameter 0.5-3cm, and rubble thickness is 3-10cm,

The described fertilizer bed of material (2) thickness is 3-10cm,

Described tubing (4) is interlocked the latticed of connection for pipeline transverse and longitudinal, and the area of the little lattice of any of which is put down for 0.5-1.5 Square rice, this tubing at least provided with one can inject effusion be opened on earth's surface, pipe diameter is 3-7cm, tube wall On have aperture be 0.5-2mm not wait weepage holes,

Table soil (3) thickness on the described fertilizer bed of material (2) is more than 30cm,

In the inner weathered coal mixing mistake 50 mesh sieve containing humic acidss more than 60% of table soil (3) of harrow broken in described grading step, Mixed ratio is every square metre 0.5-3 kilogram,

Soil after soda is processed puts into Lumbricuss loam, and supply volume is not less than 20 for every square metre；

Described soda step is implemented 1-4 time according to salinization of soil degree, implements rake to table soil (3) within 3-5 days after each soda Implement soda next time again within 1-3 days after broken process；

Described effusion is for dry yeast and water quality than the aqueous solution for 1:2000-5000.