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Method for integrated repairing alkali spot soil by furfural slag and Atriplex hortensis

A technology of elm spinach and furfural slag, which is applied in the field of restoration of alkali-spotted bare land and saline-alkali land, which can solve the problems of uneconomical planting of forage plants, unfavorable soil physical and chemical properties, and increased soil salinity, so as to improve soil physical and chemical properties , Improve soil compaction, improve the effect of soil structure

Inactive Publication Date: 2006-11-08
NORTHEAST NORMAL UNIVERSITY
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  • Summary
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AI Technical Summary

Problems solved by technology

It is also uneconomical to grow as a forage plant due to its low yield
Moreover, wild barley is a salt-tolerant plant, and its absorption and accumulation of salt is far less than that of salt-accumulating plants. The surface aggregation of its root system will instead increase the soil salinity, which is not conducive to the improvement of soil physical and chemical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The test site is located in the bare land with alkali spots in the north of Muchang Village, Sanjingzi Town, Fuyu County. Both test sites are 5×9m 2 (One of them is fertilized and the other is not fertilized, and the rest of the steps are the same), and the control land is 3×5m 2 .

[0036] In order to facilitate the comparison with salt-tolerant plants and nitrogen-fixing plants, in addition to the Chenopodiaceae plant spinach (Atriplexhoruensis L.), we also sow the legume plant alfalfa (Medicago sativa L.), the gramineous plant wild barley (Hordeum brevisubulatum ( Trin.) Link).

[0037] Before sowing, a germination test of three plants was carried out, and the germination rates of wild barley, alfalfa and spinach were all above 90% within three days.

[0038] The field test process is divided into the following steps:

[0039] (1) Adding slag First turn over the test site to a depth of about 15-20cm, without leaving any hard, smashed rubbish. Then according to th...

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Abstract

The present invention relates to soil improvement method, and is especially method for repairing alkali spot soil with furfural slag and Atriplex hortensis. Furfural slag as a kind of acid biomass contains rich organic matter, humic acid, nitrogen fertilizer, phosphate fertilizer, potash fertilizer and trace elements essential for plant to grow and has excellent effect of lowering soil pH value, activating calcium and magnesium salt and improving soil physical and chemical properties. The present invention repairs alkali spot soil through turning over soil, adding furfural slag, banking, leaching, seeding Atriplex hortensis, field management and other steps. The present invention has the advantages of environment friendship, low cost, fast effect, etc.

Description

technical field [0001] The invention relates to a soil improvement method, in particular to a method for repairing alkali-spotted bare land and salinized land. Background technique [0002] The anion salt in saline-alkali soil is mostly a mixture of soda, chloride and sulfate, among which soda (NaCO 3 , NaHCO 3 ), accounting for 80% to 90% of the total anion salt content, and the content of chloride and sulfate is very low. The soil is highly alkaline with a pH of around 10. Cationic salts are mainly Na + and K + , accounting for about 90% of the total amount of cations. Soluble sodium ions will cause physiological toxicity to crops, reduce the germination rate of crop seeds, cause poor growth of seedlings, and delay flowering and maturity. Exchangeable sodium ions can replace high-priced ions such as calcium ions on the soil colloid, making the soil colloid change from gel to sol. The increase of exchangeable sodium ions in soil colloids leads to the increase of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B77/00A01B79/00
Inventor 王海军盛连喜李莉莎
Owner NORTHEAST NORMAL UNIVERSITY
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