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Straw biochar-based facility soil salt-reducing conditioner and preparation method thereof

A technology of straw biology and conditioner, applied in the agricultural field, can solve the problems of large difference in the adsorption performance of biochar, unfavorable salt-based ion exchange adsorption, nutrient loss, etc., so as to improve soil physical and chemical properties, alleviate soil nutrient loss, pores well-structured effect

Inactive Publication Date: 2019-09-20
SHENYANG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, biochar is generally alkaline, and it is easy to cause nutrient loss, passivation and denaturation when it is used as a substrate; at the same time, due to different carbonization processes, different temperatures, oxygen and residence times have great differences in the adsorption performance of biochar, and too high or too high Low is not conducive to the exchange and adsorption of base ions in the soil

Method used

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  • Straw biochar-based facility soil salt-reducing conditioner and preparation method thereof
  • Straw biochar-based facility soil salt-reducing conditioner and preparation method thereof
  • Straw biochar-based facility soil salt-reducing conditioner and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0029] A soil salt-reducing conditioner for straw biochar-based facilities, comprising the following components in parts by weight: 50 parts of modified straw biochar, 13 parts of chelating agent, 8 parts of compound salt-reducing bacterial agent, 13 parts of acidifier, filling Among them, the chelating agent is EDTA-2Na, carboxymethyl cellulose, and polyacrylamide with a mass ratio of 1:1:1; the compound salt-reducing bacterial agent is composed of sulfur bacteria, nitrifying bacteria, jelly-like bacillus, gigantic The bacillus is mixed according to the mass ratio of 1:1:2:5; the acidifier is prepared by mixing fulvic acid and wood vinegar according to the mass ratio of 8:2; the filler is bentonite.

[0030] Wherein, the preparation method of modified straw biochar comprises the following steps:

[0031] (1) Take corn stalks, rice stalks, wheat stalks and peanut stalks of equal quality, air-dry them and crush them into small pieces of 3-5cm;

[0032] (2) Put the crushed crop...

Embodiment 2

[0039] A soil salt-reducing conditioner for straw biochar-based facilities, comprising the following components in parts by weight: 40 parts of modified straw biochar, 15 parts of chelating agent, 5 parts of compound salt-reducing bacterial agent, 15 parts of acidifier, filling Among them, the chelating agent is EDTA, carboxymethylcellulose, polyacrylamide with a mass ratio of 1:1:1; the compound salt-reducing bacterial agent is composed of sulfur bacteria, nitrifying bacteria, jelly-like bacillus, and megaterium It is prepared by mixing according to the mass ratio of 1:1:2:5; the acidifier is prepared by mixing fulvic acid and wood vinegar according to the mass ratio of 8:2; the filler is bentonite.

[0040] Wherein, the preparation method of modified straw biochar comprises the following steps:

[0041] (1) Take corn stalks and peanut stalks of equal quality, air-dry them and crush them into small pieces of 3-5cm;

[0042] (2) Put the crushed crop stalks in the carbonization ...

Embodiment 3

[0049] A soil salt-reducing conditioner for straw biochar-based facilities, comprising the following components in parts by weight: 60 parts of modified straw biochar, 10 parts of chelating agent, 10 parts of compound salt-reducing bacterial agent, 10 parts of acidifier, filling 15 parts of agents; wherein, the chelating agent is carboxymethyl cellulose; the compound salt-reducing bacteria agent is mixed by sulfur bacteria, nitrifying bacteria, jelly-like bacillus, and megaterium in a mass ratio of 1:1:2:5; The acidulant is made by mixing fulvic acid and wood vinegar in a mass ratio of 8:2; the filler is talcum powder.

[0050] Wherein, the preparation method of modified straw biochar comprises the following steps:

[0051] (1) Take rice stalks and wheat stalks of equal quality, air-dry them and crush them into small sections of 3-5 cm;

[0052] (2) Put the crushed crop stalks in the carbonization furnace, feed nitrogen to control the partial pressure of oxygen ≤ 7.5×10 -14 ...

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Abstract

The invention discloses a straw biochar-based facility soil salt-reducing conditioner and a preparation method thereof, and belongs to the technical field of agriculture. The straw biochar-based facility soil salt-reducing conditioner comprises, in parts by weight, 40-60 parts of modified straw biochar, 10-15 parts of a chelating agent, 5-10 parts of a composite salt-reducing microbial agent, 10-15 parts of an acidifying agent, and 10-15 parts of a filling agent. Carbonization utilization of agricultural and forestry crop straws is beneficial to realizing resource recycling, and straws are returned to the farmland more efficiently. By adopting the straw biochar-based facility soil salt-reducing conditioner, the soil salinity can be reduced by 20-40%, a facility soil pH value is increased by 10% or more, the soil bulk density is reduced by 0.05-0.10 g / cm<3>, and the soil water retention capacity is improved by 30-50%.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to the preparation of a soil desalination agent, in particular to a straw biochar-based soil desalination conditioner and a preparation method thereof. Background technique [0002] Facility agriculture is an important mode of production in modern agriculture. With the increase of facility cultivation years, a series of problems have gradually emerged, among which soil salinization has become an important factor restricting the sustainable development of this industry. Under protected cultivation conditions, the temperature and humidity inside the greenhouse are significantly higher than those in the open field due to the closed environment for crop growth. The high temperature and high humidity environment promotes the accumulation and surface aggregation of soil salt, the rapid decomposition of soil solid phase substances and the release of base ions, which aggravates the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00C09K109/00
CPCC09K17/40C09K2101/00C09K2109/00
Inventor 兰宇杨旭王迪赫天一杨镜秀王庆阳曹殿云
Owner SHENYANG AGRI UNIV
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