Salinization removing system for in-greenhouse cultivation soil

Abstract

The invention discloses a salinization removing system for in-greenhouse cultivation soil. The salinization removing system comprises a cultivation medium layer, a salt isolating layer, a salt settled layer and a greenhouse base layer. The cultivation medium layer is prepared from cultivation media, a leaching pipe is arranged at the bottom of the cultivation medium layer, and first downward through holes are formed in the leaching pipe; the salt isolating layer comprises a first non-woven fabric layer; the salt settled layer comprises coal cinder and first gravel, a salt leaching pipe is arranged in the upper middle of the salt settled layer, and second upward through holes and third downward through holes are formed in the salt leaching pipe; the greenhouse base layer is prepared from second gravel, a salt discharging pipe is arranged at the bottom of the greenhouse base layer, a dip angle of 0-10 degrees is formed between the salt discharging pipe and the horizontal plane, saline water is discharged from the low end of the salt discharging pipe, and one section of a water outlet of the salt discharging pipe is sequentially filled with zeolite, scrap iron and activated carbon in the water flow direction, wherein the ratio of the zeolite to the scrap iron to the activated carbon is 1:1:1. The salinization removing system can be controlled by labor, salt of the in-greenhouse soil can be collected, washed and removed, the salinization removing effect on the in-greenhouse cultivation soil is achieved, and meanwhile the hardening problem of in-greenhouse soil is solved.

Description

technical field [0001] The invention relates to the field of horticultural cultivation. More specifically, the present invention relates to a soil desalination system for indoor cultivation in a greenhouse. Background technique [0002] With the acceleration of urbanization in our country, in order to meet the needs of urban residents, the functions of greenhouses have been continuously expanded, and various greenhouses based on modern glass and PC boards have developed rapidly. [0003] In the greenhouse, during the plant growth process, the plant cultivation soil lacks rainwater washing, coupled with long-term high temperature, high humidity, and poor ventilation. With the increase of cultivation years, a series of changes have taken place in the cultivation soil environment, resulting in soil compaction, Soil salinization and secondary salinization and other issues. [0004] Cultivation soil salinization and secondary waterlogging will inhibit the growth and development...

AI Technical Summary

Problems solved by technology

Chinese patent (authorization announcement number CN102499036B) has introduced a kind of cultivation matrix that eliminates indoor planting soil salinization, and this matrix total thickness reaches 3.5m, has eliminated soil salinization to a certain extent, but there are deficiencies, this matrix will Salt accumulates in the lower layer of the cultivation medium and enriches for a long time, which cannot fundamentally eliminate salinization

Chinese patent (Application No.: 201210276003.9) introduces the salt drainage technology of underground pipes to quickly eliminate the secondary salinization of protected cultivation soil. This invention has only salt drainage pipes and no leaching layer, and the salt in the cultivation soil cannot be completely eliminated.

[0006] At present, there is no particularly effective solution to the above defects. How to effectively solve the problem of soil salinization in greenhouse cultivation, there is currently no particularly effective solution

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