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A kind of biological improvement method of saline-alkali land

A saline-alkali soil and biological technology, applied in the field of soil remediation, can solve the problems of consuming a lot of manpower, material and financial resources, unsatisfactory effect, secondary pollution, etc., and achieve the effect of reducing application amount, inhibiting adverse effects, and inhibiting evaporation

Active Publication Date: 2022-03-15
HUNAN HYBRID RICE RES CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among many saline-alkali soil improvement measures, water conservancy engineering measures, agricultural cultivation measures, chemical amendments and other methods have been widely used, but the effect is not ideal
Although chemical improvement measures can quickly change the soil structure, it may also cause secondary pollution; agricultural measures need to consume a lot of manpower, material resources and financial resources

Method used

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  • A kind of biological improvement method of saline-alkali land

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Effect test

Embodiment 1

[0024] A method for biological improvement of saline-alkali land, is characterized in that, comprises the following steps:

[0025] (1) Deep plow the saline-alkali land by 30cm, and lay a 1cm-thick bacterial residue interlayer, and the application rate of the bacterial residue is 1500kg / mu;

[0026] (2) Make ridges after filling the soil back, the ridge distance is 60cm, and apply 1500kg / mu of decomposed organic fertilizer in the ridges, and cover with white biodegradable plastic film;

[0027] (3) Plant kenaf on the ridge, and plant mushrooms in the furrow to form intercropping. The planting method of kenaf is 2 rows per ridge, the seeding rate is 2kg / mu, the sowing depth is 3cm, and the plant spacing is 4cm; the planting method of mushrooms In order to lay a layer of culture material with a thickness of 10cm in the furrow, and then sprinkle the bacteria on the surface, the culture material includes 20 parts by weight of straw, 40 parts of sawdust, 10 parts of bran, 10 parts ...

Embodiment 2

[0029] A method for biological improvement of saline-alkali land, is characterized in that, comprises the following steps:

[0030] (1) Deep plow the saline-alkali land by 30cm, and lay a 2cm-thick bacterial residue interlayer, and the application rate of the bacterial residue is 2000kg / mu;

[0031] (2) Make ridges after filling the soil back, the ridge distance is 60cm, and apply decomposed organic fertilizer 2000kg / mu in the ridges, and cover with white biodegradable plastic film;

[0032] (3) Kenaf is planted on the ridge, and mushrooms are planted in the furrow to form intercropping. The planting method of kenaf is 2 rows per ridge, the seeding rate is 2.1kg / mu, the sowing depth is 4cm, and the plant spacing is 4cm; the planting of mushrooms The method is to lay a layer of culture material with a thickness of 12cm in the furrow, and then sprinkle the bacteria on the surface. The culture material includes 25 parts by weight of straw, 35 parts of sawdust, 15 parts of bran, 1...

Embodiment 3

[0034] A method for biological improvement of saline-alkali land, is characterized in that, comprises the following steps:

[0035] (1) Deep plow the saline-alkali land by 35cm, and lay a 2cm-thick bacterial residue interlayer, and the application rate of the bacterial residue is 2500kg / mu;

[0036] (2) Fill the soil back and make a ridge with a ridge distance of 65 cm, and apply 2500 kg / mu of decomposed organic fertilizer in the furrow, and cover with a white biodegradable plastic film;

[0037] (3) Plant kenaf on the ridge, and plant mushrooms in the furrow to form intercropping. The planting method of kenaf is 2 rows per ridge, the seeding rate is 2.2kg / mu, the sowing depth is 5cm, and the plant spacing is 5cm; the planting of mushrooms The method is to lay a layer of culture material with a thickness of 15cm in the furrow, and then sprinkle the bacteria on the surface. The culture material includes 30 parts by weight of straw, 30 parts of sawdust, 20 parts of bran, 20 part...

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Abstract

The invention relates to the technical field of soil remediation, in particular to a biological improvement method for saline-alkali land. The present invention comprises the following steps: (1) plowing the saline-alkali soil deeply, and laying a slag interlayer; (2) filling the soil back to make a ridge, applying 1500-3000 kg / mu of decomposed organic fertilizer in the ridge, and covering it with a film; ( 3) Plant kenaf on the ridge, 2-3 rows per ridge, sowing rate 2-2.5kg / mu, sowing depth 3-5cm, plant spacing 4-6cm, and lay compost in the ridge to plant mushrooms to form intercropping. The invention can effectively reduce the salinity and alkalinity of soil, improve the growth and quality of kenaf, thereby improving the economic benefits of saline-alkali land, and can be used as normal cultivated land subsequently.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a biological improvement method for saline-alkali land. Background technique [0002] Saline-alkali land is the general term for all kinds of saline soil, alkaline soil and salinized and alkalized soil. According to the amount of saline-alkali content in the soil, it can generally be divided into three types: mild, moderate and severe saline-alkali land. As an important land resource, soil Salinization has seriously affected the regional ecological environment and food production. According to the incomplete statistics of UNESCO and FAO, the saline-alkali land area in the world reaches 955 million hm2, while the total area of ​​saline-alkali land in my country is about 99.14 million hm2, ranking third in the world. Saline-alkali soil is mainly characterized by stickiness when wet and poor air permeability; hard when dry and poor water permeability. In severe cases, salt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02A01G24/10A01G24/22A01G24/23A01G24/25
Inventor 齐绍武刘建兵吴俊吴朝晖
Owner HUNAN HYBRID RICE RES CENT
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