Process improving marine ooze to be used for planting soil

A silt and marine phase technology is applied in the technical field of improving marine silt for planting soil, and achieves the effects of low cost and simple composition.

Inactive Publication Date: 2020-11-10
NAT ENG RES CENT OF DREDGING TECH & EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-cost composite formula and treatment method for improving marine silt into landscaping soil for garden planting, which has solved the technical bottleneck of using marine silt for planting soil after recycling

Method used

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  • Process improving marine ooze to be used for planting soil
  • Process improving marine ooze to be used for planting soil
  • Process improving marine ooze to be used for planting soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The original incoming marine silt is used as the base material, and its mass fraction is 1 part; the mass fractions of other components relative to the marine silt are: 0.5 part of rice husk (and / or straw), 5 parts of sand, and 0.5 part of biochar parts, 8 parts of organic fertilizer, 0.1 part of desulfurization gypsum; Based on above-mentioned compound formula, the steps of using this formula to process marine silt are as follows: s1: reduce the water content of marine silt to 50%; s2: use rotary tiller to The silt is deeply plowed, the soil ploughing depth is greater than 0.5m, and the rotary tillage is carried out 3 times; s3: add rice husk (and / or straw), sand, and desulfurization gypsum. The rice husk (and / or straw), sand, and desulfurized gypsum are formulated into an improved mixture, and the mixture is divided into three equal parts. Before each rotary tillage, an improved mixture is evenly spread on the soil surface. Shell (and / or straw), sand, desulfurized gyp...

Embodiment 2

[0068] The original incoming marine silt is the base material, and its mass fraction is 1 part; the mass fractions of other components relative to the marine silt are: 3 parts of rice husks (and / or straws), 5 parts of sand, and 0.5 parts of biochar parts, 8 parts of organic fertilizer, 0.5 part of desulfurization gypsum; according to the same steps of processing marine silt as in Example 1, after 28 days of soil conservation, the measured indexes are shown in Table 3. The increase of rice husk (and / or straw) content increases the water permeability, air permeability and organic matter content of marine silt. Compared with the data in Table 3, the salinity and alkalinity of the improved marine silt decreased by 25.50, the EC value decreased by 0.56, and the organic matter content increased by 61.44.

[0069] table 3

[0070]

Embodiment 3

[0072] The original incoming marine silt is the base material, and its mass fraction is 1 part; the mass fractions of other components relative to the marine silt are: 1 part of rice husk (and / or straw), 8 parts of sand, and 1 part of biochar parts, 10 parts of organic fertilizer, 1 part of desulfurization gypsum; according to the same steps of processing marine silt as in Example 1, after 28 days of soil conservation, the measured indexes are shown in Table 4. Compared with the data in Table 4, the salinity and alkalinity of the improved marine silt decreased by 25.53, the EC value decreased by 0.91, and the organic matter content increased by 72.44.

[0073] Table 4

[0074]

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Abstract

The invention discloses a process improving marine ooze to be used for planting soil. The process is characterized by comprising a marine ooze improvement formula and a marine ooze improvement process; original incoming material marine ooze is used as a base material, the mass part of the original incoming material marine ooze is 1 part, and the other components are, in parts by mass relative to the marine ooze, 0.5-3 parts of rice husks (and / or straw), 5-10 parts of sand grains, 0.5-2 parts of charcoal, 8-12 parts of organic fertilizers and 0.5-2 parts of desulfurized gypsum; and the processcomprises the following steps that S1, firstly, the water content of the marine ooze is reduced to 50% or below; S2, marine ooze particles are crushed; S3, the rice husks (and / or the straw), the sandgrains and the desulfurized gypsum are added; S4, the EC value of the marine ooze is reduced through irrigation; and S5, finally, the marine ooze is treated through methods such as adding the charcoaland the organic fertilizers to improve soil fertility, and finally the planting soil meeting the soil environment quality II-level standard of "green planting soil" (CJ / T340-2016) is formed. The process has the advantages that the formula composition is simple, the cost is low, and the requirements of the planting soil are met after the marine ooze is improved.

Description

technical field [0001] The invention belongs to the field of marine silt resource utilization, and in particular relates to a process for improving marine silt for planting soil. Background technique [0002] As a kind of sedimentary soil formed by hydraulic reclamation, it has the characteristics of high salinity, heavy texture, poor structure, large specific gravity and bulk density, small porosity and permeability coefficient, and natural desalination rate. , basically does not have the ability to coordinate water, fertilizer, air and heat; in addition, because there is no natural soil formation and biological evolution process, the fertility indicators such as organic matter and available nutrients in the reclaimed soil are generally very low, so the poor physical and chemical properties The nature makes the blowing soil unsuitable for the growth and development of plants. In the past, the method of "blind pipe salt discharge and soil greening" was used, but the cost wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G24/25A01G24/22A01G24/28A01G24/10C05G3/00
CPCA01G24/10A01G24/22A01G24/25A01G24/28C05D3/02C05G3/00C05D9/00C05F5/002C05F7/00C05F11/00C05G1/00
Inventor 冯波孙文博张晴波陶润礼江帅崔勇涛袁超哲郝宇驰罗章石鸿韬曾嘉辰曲嘉铭孙慧周振燕施绍刚
Owner NAT ENG RES CENT OF DREDGING TECH & EQUIP
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