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A method of soil improvement

A soil improvement and soil technology, applied in the restoration of polluted soil, land preparation methods, agricultural machinery and implements, etc. Improve soil remediation capacity, improve fertility, improve soil air content

Active Publication Date: 2022-01-11
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: a kind of method for soil improvement, carry out according to the following steps:

[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 betw...

Embodiment 2

[0033] Embodiment 2: a kind of method for soil improvement, 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 adja...

Embodiment 3

[0038] Embodiment 3: a kind of method for soil improvement, carry out according to the following steps:

[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 a...

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Abstract

The invention discloses a method for improving soil. Biomass charcoal is firstly oxidized under the irradiation of a xenon arc lamp, and hydrogen peroxide is sprayed every 6-9 hours during the oxidation period; ditches are dug in the land in winter to form criss-cross ravines; Mix the raw soil from the ditch with the oxidized biochar at a ratio of 1:0.5‑1, apply the mixture of biochar and raw soil in the ditch, and bury and tamp it with soil; cover the tamped ditch For crop stalks, evenly sprinkle animal manure on the crop stalks every 10‑20 days from the date of compaction until the next spring. By modifying the biochar, the invention not only improves the environmental restoration capability of the biochar, but also improves the effect of soil improvement in a low-cost manner.

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 Patents(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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