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Compound fertilizer containing humus acid and preparation process thereof

A technology of compound fertilizer and humic acid, which is applied in urea compound fertilizer, ammonium orthophosphate fertilizer, layered/coated fertilizer, etc., can solve the problems of orderly and stable fertilizer release rate, difficulty in obtaining materials, and high cost. , to avoid environmental pollution and soil agglomeration, low cost, and improve the utilization rate

Inactive Publication Date: 2019-01-04
许传高
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of fertilizer waste, a variety of slow and controlled release fertilizer products have been introduced in China. Controlled release fertilizers have become the development direction of agricultural fertilizers in the future. Coating materials are also called coating fertilizers and film fertilizers. A film is formed on the surface to make the dissolution rate of fertilizers consistent with the growth needs of crops, so as to achieve the purpose of saving fertilizers, improving fertilizer utilization rates and increasing agricultural economic benefits, but this material is difficult to degrade in soil, and the coating film is in the soil. Fertilizer nutrients remain in the soil after complete release; some coating materials can be decomposed, but the materials are difficult to obtain and the cost is high, and the fertilizer release rate is difficult to achieve orderly and stable

Method used

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  • Compound fertilizer containing humus acid and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A compound fertilizer containing humic acid, which comprises the following raw materials: coated carrier, urea, monoammonium phosphate, potassium chloride, humic acid, water, and biological agents.

[0028] Specifically, the enveloped carrier is prepared according to the following method:

[0029] Add polybutylene succinate to chloroform, the ratio of polybutylene succinate and chloroform is 1g: 10ml, stir until dissolved, then add one-tenth of polybutylene succinate Parts by weight of starch ether, stirred at 200 rpm for 10 minutes, then added ethanol with the same volume as chloroform, allowed to stand for 30 minutes, collected the precipitate, put it in a freeze dryer, and dried for 12 hours to obtain the product.

[0030] The biological preparation is prepared according to the following method:

[0031] Paenibacillus polymyxa, Trichoderma harzianum, Bacillus megaterium and Azotobacter torus were cultured to a concentration of 1×10 9 The bacterial liquid of cfu / ml ...

Embodiment 2

[0037] A compound fertilizer containing humic acid, which comprises the following raw materials: coated carrier, urea, monoammonium phosphate, potassium chloride, humic acid, water, and biological agents.

[0038] Specifically, the enveloped carrier is prepared according to the following method:

[0039] Add polybutylene succinate to chloroform, the ratio of polybutylene succinate and chloroform is 1g: 10ml, stir until dissolved, then add one-tenth of polybutylene succinate Parts by weight of starch ether, stirred at 200 rpm for 10 minutes, then added ethanol with the same volume as chloroform, allowed to stand for 30 minutes, collected the precipitate, put it in a freeze dryer, and dried for 12 hours to obtain the product.

[0040] The biological preparation is prepared according to the following method:

[0041] Paenibacillus polymyxa, Trichoderma harzianum, Bacillus megaterium and Azotobacter torus were cultured to a concentration of 1×10 9cfu / ml of bacterial liquid, and ...

Embodiment 3

[0049] 1. Urea release time test:

[0050] The test group is Example 1; the control group: the coated carrier prepared in Comparative Example 1 is used, and the rest are the same as Example 1. The test soil is ordinary soil with a water content of 30%, and the fertilizer depth is 15cm. The specific results are shown in Table 1:

[0051] Table 1

[0052] Release rate%

[0053] As shown in Table 1, the release rate of urea in the control group was faster, and all releases were completed within 16 days, while the release rate of urea in the test group was stable and orderly, which was basically synchronized with the absorption of crop nutrients, avoiding the excessive release of most slow-release fertilizers in the early stage. The defect of rapid mass loss, the effect is obviously better than that of chitosan-coated carrier.

[0054] 2. Degradation time test of the coated carrier:

[0055] The test group is the embodiment 1; the control group 1: no compound bacteri...

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Abstract

The invention belongs to the technical field of fertilizers, and discloses a compound fertilizer containing humus acid. The compound fertilizer comprises the following raw materials of a diolame carrier, urea, monoammonium phosphate, potassium chloride, the humus acid, water and a biological agent. The compound fertilizer is lasting in fertilizer efficiency, simple and feasible in preparation process and suitable for large-scale production and has better market prospects.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a compound fertilizer containing humic acid and a preparation process thereof. Background technique [0002] my country's fertilizer field is facing a big bottleneck. In order to increase food production, people have put a lot of inorganic chemical fertilizers into many farmlands to increase production, while ignoring the adverse effects of chemical fertilizers on the quality of agricultural products, soil compaction, groundwater and ecological environment. The sharp decline of organic matter has destroyed the original soil ecological balance, soil compaction, water and soil pollution, environmental deterioration, ecological imbalance, increasing agricultural production costs and declining quality of agricultural products have become increasingly prominent, resulting in a vicious cycle of increasing production without increasing income and environmental pollution. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05G3/00C05G3/80C05G5/30C05C9/00C05D1/02C05F11/02C05F11/08
Inventor 赵兰坤赵凤良宋海波张超垒
Owner 许传高
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