Soil improvement method

A technology for improving soil and land, applied in the restoration of polluted soil, land preparation methods, agricultural machinery and implements, etc. The effect of improving soil air content, improving soil remediation capacity, and improving fertility

Active Publication Date: 2019-05-21
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country has used biochar to restore soil, but the restoration method is simply to sprinkle or bury biochar in the land, and there is no reasonable way to apply biochar. As a result, biochar cannot use its soil improvement function as much as possible, resulting in the inefficient use of biochar and poor soil improvement effects.

Method used

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Effect test

Embodiment 1

[0028] Embodiment 1: a kind of method of improving soil, carry out as follows:

[0029] a. Pyrolyze the mixture of rice husk, straw and bamboo wood at 300°C at a ratio of 1:1:1 to form granular biochar with a diameter of 3 mm. 2 at 340nm) for 380 hours of oxidation, during the oxidation period, spray 10% hydrogen peroxide through the atomizing nozzle every 6 hours at a rate of 0.03L / m per second 2 , the spraying time is maintained for 15s, and the biochar is constantly stirred during the spraying period;

[0030] b. On the land in December of 2017 winter (Land A on the left bank of the Qujiang River in Hangbu Town, Kecheng District, Quzhou City, Zhejiang Province, east longitude 118.80, north latitude 28.92, this place belongs to a typical subtropical monsoon climate zone, with an annual average temperature of 16.3°C) Ditches are opened in the middle to form criss-cross gullies. The depth of the gullies is 5cm, the width is 15cm, and the interval between adjacent gullies is 4...

Embodiment 2

[0033] Embodiment 2: a kind of method of improving soil, carry out according to the following steps:

[0034] a. Pyrolyze the mixture of rice husk and bamboo wood at 500°C at a ratio of 1:2 to form granular biochar with a diameter of 5 mm. 2 at 340nm) for 390 hours of oxidation, during the oxidation period, spray 15% hydrogen peroxide through the atomizing nozzle every 7 hours at a rate of 0.03L / m per second 2 , the spraying time is maintained for 18s, and the biochar is constantly stirred during the spraying period;

[0035] b. On the land in December of 2017 winter (Land B on the left bank of the Qujiang River in Hangbu Town, Kecheng District, Quzhou City, Zhejiang Province, east longitude 118.80, north latitude 28.92, this place belongs to a typical subtropical monsoon climate zone, with an annual average temperature of 16.3°C) The gully is opened in the middle to form criss-cross gullies. The depth of the gully is 10cm, the width is 25cm, and the interval between adjacent...

Embodiment 3

[0038] Embodiment 3: a kind of method of improving soil, carry out as follows:

[0039]a. Pyrolyze the mixture of rice husk and straw at 500°C at a ratio of 1:2 to form granular biochar with a diameter of 8mm. 2 at 340nm) for 400 hours of oxidation, and spray 20% hydrogen peroxide through the atomizing nozzle every 8 hours during the oxidation period, at a rate of 0.03L / m per second 2 , the single spraying time is maintained for 20s, and the biochar is constantly stirred during the spraying period;

[0040] b. On the land in December of 2017 winter (Land C on the left bank of the Qujiang River in Hangbu Town, Kecheng District, Quzhou City, Zhejiang Province, east longitude 118.80, north latitude 28.92, this place belongs to a typical subtropical monsoon climate zone, with an annual average temperature of 16.3°C) Ditches are opened in the middle to form criss-cross gullies. The depth of the gullies is 8cm, the width is 20cm, and the interval between adjacent gullies is 45cm; ...

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Abstract

The invention discloses a soil improvement method which comprises the steps as follows: firstly, oxidizing biomass charcoal under the irradiation of a xenon arc lamp, and spraying a hydrogen peroxidesolution for once every 6 to 9h during oxidization; in winter, ditching in the land to form criss-crossed gullies; mixing original soil obtained after ditching with the oxidized biomass charcoal according to a ratio of 1:(0.5 to 1), applying the mixture of the biomass charcoal and the original soil into the gullies, and applying soil to bury and tamp; and covering the tamped gullies with crop straws, and from the date when tamping is carried out, uniformly applying animal waste to the crop straws every 10 to 20 days until the spring next year. According to the invention, by modifying the biomass charcoal, not only is the environmental restoration ability improved, but also the soil improvement effect is improved in a low-cost mode.

Description

technical field [0001] The invention relates to the field of soil protection, in particular to a soil improvement method. Background technique [0002] At present, my country's forest vegetation is facing the problem of increasing deforestation, leading to soil degradation, soil erosion and other adverse effects are also becoming more and more serious. Biomass charcoal generally refers to a kind of product with rich carbon content and stable properties formed by heating organic materials such as crop straws under the condition of limited oxygen supply. It is a kind of black carbon, and the common ones mainly include charcoal, bamboo charcoal , rice straw charcoal, rice husk charcoal, etc., are mainly used in forestry and agriculture, because of their high stability and strong adsorption, they are now recommended by many scholars as soil improvers. Its functions are mainly reflected in: improving soil, increasing crop yield and quality; reducing fertilizer use, promoting fer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B09C1/10A01B79/02
Inventor 何莉莉杨生茂钟哲科刘玉学吕豪豪汪玉瑛张小平
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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