Biochar-based multi-element fertilizer and preparation method thereof

A technology of biochar and primary fertilizer, applied in the field of efficient microbial fertilizer preparation, can solve the problems of unfavorable microbial survival, low nutrient content, damaged microbial inoculation rate, etc., to reduce the problem of crop growth inhibition or production reduction, simple preparation method, Effect of increasing inoculum inoculation rate

Active Publication Date: 2019-12-27
GUIZHOU TOBACCO SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most biochars are mainly medium and small pores, which will greatly reduce the inoculation rate of microorganisms; most biochars are strongly alkaline, which is not conducive to the survival of microorganisms; biochar itself has a high carbon content, but other The nutrient content is very low, and the high C / N value is not conducive to the survival of microorganisms

Method used

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  • Biochar-based multi-element fertilizer and preparation method thereof
  • Biochar-based multi-element fertilizer and preparation method thereof
  • Biochar-based multi-element fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of biochar-based multicomponent fertilizer, comprising the steps of:

[0023] (1) Material preparation: pine wood biochar is purchased from the market, and the material parameters are shown in Table 1, and passed through a 2mm sieve for use; ammonium nitrate crystals, nitrogen content 35%, analytically pure, dissolved in 5000 ml of deionized ammonium nitrate crystals per 100 grams of ammonium nitrate crystals The proportion of water is made into ammonium nitrate solution; EM stock solution (composed of more than 80 species of microorganisms in 5 families, 10 genera, etc.) Purchased from Nanjing Amule Environmental Biotechnology Co., Ltd., mixed with 1 part of EM stock solution, 1 part of molasses, and 98 parts of deionized water (volume percentage), and cultured in a sealed environment at 25°C-35°C for 7 days to make EM active liquid (bacteria culture medium).

[0024] Table 1

[0025] carrier material pH C / N Specific surface area (m...

Embodiment 2

[0030] Select the modified biochar prepared in Example 1, according to the mass percentage of modified biochar and strain culture medium in an amount of 1.25:1, add the modified biochar into the strain culture liquid, and put it into 25°C constant temperature oscillation In the box, set the rotating speed to 200rpm, and shake it for 24 hours before taking it out. Put the modified biochar inoculated with EM into an oven, set the temperature to 40° C., and when the moisture content is 6% (less than 8%), the biochar-based multi-component fertilizer is made.

Embodiment 3

[0032] The modified biochar prepared in Example 1 was selected, and the modified biochar was added to the strain culture solution according to the mass percentage of the modified biochar and the strain culture medium as 1.5:1, and then placed in a constant temperature oscillation at 25°C. In the box, set the rotating speed to 200rpm, and shake it for 24 hours before taking it out. Put the modified biochar inoculated with EM into an oven, set the temperature to 40° C., and when the moisture content is 6% (less than 8%), the biochar-based multi-component fertilizer is made.

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Abstract

The invention discloses a preparation method of a biochar-based multi-element fertilizer, and belongs to the field of manufacturing of multifunctional biofertilizers. The preparation method comprisesthe following steps: preparation of modified charcoal: adding charcoal into a container filled with an ammonium nitrate solution according to the mass percent ratio of (20-50):(120-150) of the charcoal to the ammonium nitrate solution, then placing the container into a constant-temperature vibration box for vibrating the solution for 24 +/-1 hours; performing solid-liquid separation in a centrifugal machine, and drying the mixture; preparation of the biochar-based multi-element fertilizer: adding the modified biochar into the strain culture solution according to a mass percentage ratio of themodified biochar to the strain culture solution of (1-1.5):1, then placing the mixture into a constant-temperature vibration box for vibrating the mixture for 24 +/-1 hours, and drying the mixture atlow temperature to obtain the biochar-based multi-element fertilizer. Besides the biochar, the fertilizer also contains ammoniation and nitrifying bacteria with higher activity, and the nitrogen conversion and the utilization efficiency of the fertilizer can be remarkably improved when the fertilizer is applied to soil.

Description

technical field [0001] The invention belongs to the field of multifunctional biological fertilizer production, and relates to a microbial fertilizer with woody biochar as a carrier and a preparation method thereof, in particular to a microbial fertilizer preparation method for improving nitrogen conversion and fertilizer utilization efficiency. Background technique [0002] In order to increase crop yield and increase economic benefits, a total of 600-1 300 kg / ha of nitrogen application in 2-3 seasons throughout the year is very common in my country. Excessive nitrogen fertilizer aggravates the accumulation of nitrate in crops, which threatens human health; the input of nitrogen fertilizer exceeds the demand of crops for nitrogen fertilizer, resulting in a nitrogen utilization rate of only 21% to 36%; excess nitrogen fertilizer leads to nitrate nitrogen in the soil The accumulation of a large amount of nitrate nitrogen causes many production problems such as secondary salini...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05C1/00C05D9/00C05F5/00C05F11/08Y02P60/21
Inventor 熊管乐吴七斤邱桠柳何菁林锴裴丹丹吴问波邵孝候
Owner GUIZHOU TOBACCO SCI RES INST
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