A kind of fast-growing peat-based controlled slow-release ecological fertilizer and its preparation method and application

A fast-growing grass, controlled and slow-release technology, applied in the direction of fertilization methods, applications, potassium fertilizers, etc., can solve the problems of nutrient decomposition and adsorption loss in and out of micropores, and affect the controlled and slow-release effect of biochar-coated carbon-based fertilizers. Effects of nutrient loss, elimination of nutrient deficiency, and enhancement of adsorption capacity

Active Publication Date: 2021-05-14
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the micropore diameter is larger than that of the nutrient elements, the resistance of nutrients entering and leaving the micropores is small, so the physically adsorbed nutrients are easily desorbed and lost, which in turn affects the nutrient controlled and slow release effect of biochar-coated carbon-based fertilizers.

Method used

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  • A kind of fast-growing peat-based controlled slow-release ecological fertilizer and its preparation method and application
  • A kind of fast-growing peat-based controlled slow-release ecological fertilizer and its preparation method and application
  • A kind of fast-growing peat-based controlled slow-release ecological fertilizer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A fast-growing peat-based controlled slow-release ecological fertilizer, its components in parts by weight include: 30 parts of carbon-loaded urea, 25 parts of carbon-loaded potassium fertilizer, 10 parts of carbon-loaded monoammonium phosphate, 10 parts of urea, 5 parts of potassium sulfate, 5 parts of Parts of cytokinin production bacteria agent, 5 parts of potassium silicate and 10 parts of industrial starch; wherein the total nutrients (N+P 2 o 5 +K 2 O) mass content ≥ 30%; N:P 2 o 5 :K 2 The mass ratio of O is 14:6:10; the fast-growing peat-based slow-release ecological fertilizer contains Bacillus megaterium, Bacillus subtilis, Bacillus colloidus and Trichoderma flora, wherein the effective live bacteria of each bacterium Number average≥10×10 9 cfu / g, the total number of effective viable bacteria in the fast-growing peat-based slow-release ecological fertilizer is ≥50×10 9 cfu / g. The carrier charcoal of the charcoal-loaded fertilizer is the fast-growing gra...

Embodiment 2

[0041] A fast-growing peat-based controlled-release ecological fertilizer, its components in parts by weight include: 20 parts of carbon-loaded urea, 40 parts of carbon-loaded potassium fertilizer, 8 parts of urea, 10 parts of potassium sulfate, 12 parts of cytokinin-producing bacteria and 10 parts of parts of industrial starch; of which total nutrients (N+P 2 o 5 +K 2 O) mass content ≥ 30%; N:P 2 o 5 :K 2 The mass ratio of O is 9:4:17; the fast-growing peat-based slow-release ecological fertilizer contains Bacillus megaterium, Bacillus subtilis, Bacillus colloidus and Trichoderma flora, wherein the effective live bacteria of each bacterium Average number≥20×10 9 cfu / g, the total effective number of viable bacteria in the fast-growing peat-based slow-release ecological fertilizer is ≥100×10 9 cfu / g. The carrier charcoal of the charcoal-loaded fertilizer is the fast-growing grass Nandi charcoal (prepared according to the above method). Use a disc granulator to mix the a...

experiment example 1

[0044] As an important rice production base and melon export base in my country, Hunan has a large planting area of ​​rice and melon, and has great potential in the fertilizer market. Therefore, this experimental example is carried out with the special carbon-based ecological fertilizer for rice and the special carbon-based ecological fertilizer for melon prepared in Example 1 and Example 2.

[0045] Determination of the total nutrient content of the configured fertilizer samples: the total phosphorus and potassium content was determined by the microwave digestion ICP method, and the total nitrogen content was determined by the Kjeldahl method. Delayed release of nutrients in the fertilizer samples was tested with reference to the national standard GB / T 23348-2009. Determination result is as follows table 1 and table 2:

[0046] Table 1 Nutrient content of Nandi charcoal-based controlled-release ecological fertilizer specially formulated for rice and melon

[0047]

[004...

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Abstract

The invention relates to a fast-growing peat-based controlled-release ecological fertilizer and its preparation method and application. The active components include slow-acting fertilizer components, quick-acting fertilizer components, cytokinin-producing bacteria agents, or other beneficial components. The total nutrient mass content (N+P) in the ecological fertilizer 2 o 5 +K 2 O) ≥ 30%; wherein the carrier charcoal used in the slow-acting fertilizer is fast-growing peat; the cytokinin-producing bacterial agent contains Bacillus megaterium, Bacillus subtilis, Bacillus colloidus and Trichoderma flora. The quality of the fast-growing peat used in the present invention is superior to that of biochar prepared from traditional agricultural waste: its high carbon yield can reduce the cost of carbon preparation; making fertilizer for paddy fields is conducive to the settlement of carbon base; Adsorption capacity of elements; can improve soil acidification caused by excessive use of chemical fertilizers, and strong alkalinity can reduce the bioavailability of heavy metal ions in the soil by passivating them.

Description

technical field [0001] The invention belongs to the technical field of biological fertilizers, and in particular relates to a fast-growing peat-based controlled slow-release ecological fertilizer and a preparation method and application thereof. Background technique [0002] Fast-growing grass refers to a class of perennial C4 herbaceous plants with tall plants and fast growth, mainly including miscanthus spp., pennisetum purpureum, reed (Phragmites communi), reed bamboo (Arundo dona), elephant grass (Pennisetum purpureum) and so on. This kind of grass generally has a high biomass yield and a high content of cellulose and hemicellulose in the biomass, so it is recognized as the most promising energy plant type. However, the conversion technology of cellulosic ethanol is not mature at present, the economic benefits of biomass direct combustion (for power generation and heating) technology are poor, and other types of utilization methods are scarce, which has led to the "stag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/40C05G3/80C05G5/12A01C21/00
CPCA01C21/00C05B7/00C05G3/20C05G3/80C05G5/12C05C9/00C05D1/00C05D1/02C05D9/00C05F11/08
Inventor 易自力薛帅王惠群喻鹏肖亮
Owner HUNAN AGRICULTURAL UNIV
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