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Method of modifying Xinjiang saline-alkaline soil

A saline-alkali land and soil improvement technology, applied in the field of soil improvement, can solve the problems of large investment, not a long-term solution, and long planting process, so as to achieve the effects of increasing yield, increasing improvement speed, and maintaining flexibility

Active Publication Date: 2017-10-13
朱拥军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to develop agricultural production in Xinjiang, relevant scientific research teams have improved saline-alkali land in Xinjiang based on their technical achievements. The improvement of saline-alkali land still mainly adopts two methods: (1) Draining by leaching the soil Salt, although this method has transformed tens of thousands of acres of land into fertile fields, it is not a long-term solution due to its high dependence on water resources, and Xinjiang is extremely short of water; (2) planting salt Plants absorb salt through halophytes, but the planting process is long and the investment is large

Method used

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Examples

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Effect test

Embodiment 1

[0029] A method for improving saline-alkali land in Xinjiang, comprising the following steps:

[0030] S1. After soaking the coal cinders in 5 times the weight of water for 7 days, screen the cinders: the particle size ≥ 10mm is large particle cinder, 10mm < particle size ≥ 4mm is medium particle cinder, 4mm < particle size ≥ 2mm is small particle cinder , the rest is fly ash;

[0031] S2. Plow the soil to 27cm deep, and spread small particles of cinder on the unturned soil surface, and the thickness of the laying is 2.5cm;

[0032] S3. mix the upturned soil evenly with desulfurized gypsum, biochar and water retaining agent, CaSO in the desulfurized gypsum 4 2H 2 The weight content of O is more than 82%, the dosage is 1800kg / mu, the dosage of biochar is 13kg / mu, and the dosage of water-retaining agent is 6kg / mu, so the soil can be improved;

[0033] S4. Take 60% of the volume of the improved soil and mix it with medium-sized coal cinders and fly ash. The volume ratio of the...

Embodiment 2

[0043] A method for improving saline-alkali land in Xinjiang, comprising the following steps:

[0044] S1. Add cinders to 3 times the weight of water and soak for 1 day, and then screen the cinders: the particle size ≥ 10mm is large particle cinder, 10mm < particle size ≥ 4mm is medium particle cinder, 4mm < particle size ≥ 2mm is small particle cinder , the rest is fly ash;

[0045] S2. Plow the soil to 40cm deep, and spread small particles of cinder on the surface of the soil that has not been turned up, and the thickness of the laying is 3cm;

[0046] S3. mix the upturned soil evenly with desulfurized gypsum, biochar and water retaining agent, CaSO in the desulfurized gypsum 4 2H 2 The weight content of O is more than 82%, the dosage is 1300kg / mu, the dosage of biochar is 15kg / mu, and the dosage of water-retaining agent is 8kg / mu, so the soil can be improved;

[0047] S4. Take 50% of the volume of the improved soil and mix it with medium-sized coal cinders and fly ash. T...

Embodiment 3

[0056] A method for improving saline-alkali land in Xinjiang, comprising the following steps:

[0057] S1. Add cinders to 5 times the weight of water and soak them for 10 days, then screen the cinders: the particle size ≥ 10mm is large particle cinder, 10mm < particle size ≥ 4mm is medium particle cinder, 4mm < particle size ≥ 2mm is small particle cinder , the rest is fly ash;

[0058] S2. Plow the soil to a depth of 30cm, and spread small particles of cinder on the unturned soil surface, with a thickness of 1.5cm;

[0059] S3. mix the upturned soil evenly with desulfurized gypsum, biochar and water retaining agent, CaSO in the desulfurized gypsum 4 2H 2 The weight content of O is more than 82%, the dosage is 1900kg / mu, the dosage of biochar is 8kg / mu, and the dosage of water-retaining agent is 5kg / mu, so the soil can be improved;

[0060] S4. Take 70% of the volume of the improved soil and mix it with medium-sized coal cinders and fly ash. The volume ratio of the improved...

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Abstract

The invention discloses a method of modifying Xinjiang saline-alkaline soil, comprising the steps of S1, adding coal cinder in water 2-5 times as heavy as the coal cinder for soaking, screening to obtain large-particle coal cinder, medium-particle coal cinder and small-particle coal cinder, as well as the rest of fly ash; S2, deeply plowing the soil to 25-40 cm, and spreading the small-particle coal residue to the surface of the soil not plowed out; S3, mixing well the plowed soil with desulfurization gypsum, biochar and a water-holding agent to obtain modified soil; S4, mixing part by volume of the modified soil with the medium-particle coal cinder and the fly ash to obtain medium soil; S4, mixing the rest of the modified soil with the large-particle coal cinder and the fly ash to obtain top soil. The wastes, coal cinder and desulfurization gypsum, are reused to modify saline-alkaline soil, and the modifying cost is effectively lowered for the saline-alkaline soil; by the aid of the biochar and the water-holding agent, formation of soil aggregate structure is accelerated, microbial ambient of the oil is improved, and saline-alkaline soil can be improved faster.

Description

technical field [0001] The invention relates to the field of soil improvement, in particular to a method for improving saline-alkali land in Xinjiang. Background technique [0002] Xinjiang is the largest saline-alkali soil area in China, and most of the heavily salinized land cannot be used for a long time, which is mainly due to its special climate and geographical reasons. Xinjiang is located in the hinterland of the Eurasian continent. The climate is dry and rainless, and the evaporation is strong. The typical inland arid climate makes agricultural production all dependent on irrigation, and its geographical environment is surrounded by mountains. The formation of saline-alkali land in the basin is even worse. The soluble salt around the basin is brought to the basin along with the agricultural irrigation water. Under the arid climate with strong evaporation and little rainfall, more and more salt is accumulated in the upper part of the soil. [0003] According to stati...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G9/10C09K17/40C09K101/00C09K109/00
CPCA01B79/02C09K17/40C09K2101/00C09K2109/00
Inventor 张豫朱拥军蔡德所黄小玲
Owner 朱拥军
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