Hydraulic filling sea mud culture substrate

Abstract

The invention provides a hydraulic filling sea mud culture substrate, which relates to a culture substrate. The hydraulic filling sea mud culture substrate comprises the following components in parts by weight: 1 part of desalinated hydraulic filling sea mud compound substrate, 0.02-0.04 part of superphosphate, 0.044-0.091 part of organic fertilizer and 0.159-0.2 part of sludge, wherein the desalinated hydraulic filling sea mud compound substrate is an improved substrate which is formed by adding carbide slag and coarse texture materials into hydraulic filling sea mud to perform desalinating, and the volume parts ratio of the hydraulic filling sea mud, the carbide slag and the coarse texture materials is 0.5-0.65:0.01-0.5:0.25-0.5. Compared with the desalinated hydraulic filling sea mud compound substrate, the hydraulic filling sea mud culture substrate has the advantages of greatly improved physicochemical property, lowered pH value, addition of microaggregate and enhanced fertility, and can be applied to afforestation of more floristics and larger areas. By developing and taking the sludge as the main fertilizer, the invention opens up a new way to handle and utilize the sludge.

Description

technical field [0001] The invention relates to a cultivation substrate, in particular to a dredging sea mud cultivation substrate. Background technique [0002] With the development of the economy and the vigorous development of urban infrastructure, the demand for land resources is increasingly urgent. Using the dredged salt-containing dredging sea mud to reclaim land has become an effective way for coastal cities to alleviate the shortage of land resources. At the same time With the increase of urban greening area and the strengthening of people's awareness of environmental protection, the greening of coastal cities has been paid more and more attention, and the large area of ​​saline-alkali soil resources in coastal cities makes the land resources for urban greening more tense. Dredging reclamation sea mud is deposited by the flocculation of salt in seawater from the alluvium of modern rivers. There is no soil-forming process. It is not natural soil, but the soil-forming...

AI Technical Summary

Problems solved by technology

[0004] Although the above method solves the problems of high salinity, poor structure, and lack of plant planting and survival in dredged reclamation sea mud, there are still the following deficiencies. Desalination through natural rainfall, and then improvement through natural succession of saline vegetation needs The cycle is too long to meet the time requirements of landscaping construction, economic development and human settlements construction. Mixing calcium carbide slag, fly ash, alkali slag, and coarse bone materials solves the problem of rapid desalination of dredged sea mud. The structure of the mixed matrix has also been significantly improved, but the pH value of the mixed matrix after desalination is high, the texture is mainly sand grains, the air permeability is strong, and the water and fertilizer retention capacity is low. At the same time, the organic matter content of the dredged sea mud is low, and the fertility is poor. As a result, when greening with mixed substrates after desalination, problems such as single greening tree species, lack of biodiversity, poor plant growth, low ecological benefits, and monotonous landscapes may occur, and it is impossible to achieve a major breakthrough in large-scale greening, nor can it achieve more. great ecological effect