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A kind of biochar-based water retention control slow-release fertilizer and its preparation method and application

A biochar, slow-release fertilizer technology, applied in the application, fertilization device, fertilizer mixture and other directions, can solve the problems of inability to reduce production costs, environmental pollution, soil structure damage, etc., and achieve improved soil, good degradability, and nutrient content. high effect

Active Publication Date: 2016-04-20
济宁益生旺农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, commercial water retaining agents are mainly based on acrylic acid or acrylamide polymers. Although binary or ternary polymers can further improve their performance, they still cannot reduce production costs.
Commonly used organic synthetic superabsorbent resins are difficult to be decomposed by organisms in the soil, and long-term use is likely to cause damage to the soil structure and environmental pollution

Method used

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  • A kind of biochar-based water retention control slow-release fertilizer and its preparation method and application
  • A kind of biochar-based water retention control slow-release fertilizer and its preparation method and application
  • A kind of biochar-based water retention control slow-release fertilizer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 Clivia special fertilizer

[0049] Potassium sulfate (15 parts by weight), potassium dihydrogen phosphate (15 parts by weight), and urea (10 parts by weight) are added into kernel fertilizer granules, cornstarch binder is added, mixed and granulated, and dried. Add 35 parts by weight of corn stalk biochar into the coating machine, add fertilizer core, spray corn starch binder, coat and dry. 25 parts by weight of corn stalk-based water-retaining material were added, coated and dried to obtain a special fertilizer for Clivia.

[0050] figure 1 The infrared spectrum of the biochar-based water-retaining and controlled slow-release fertilizer prepared for this example, the peak information in the spectrum is specifically: 3400cm -1 Nearby are the stretching vibration peaks of O-H and N-H bonds in fertilizers; 2930cm -1 It is the C-H stretching vibration peak of methyl group and methylene group in fertilizer materials, 1670 is the stretching vibration peak of ...

Embodiment 2

[0054] Embodiment 2 Cymbidium special fertilizer

[0055] Potassium sulfate (15 parts by weight), potassium dihydrogen phosphate (15 parts by weight), and urea (15 parts by weight) are added to the core fertilizer granules, cornstarch binder is added, mixed and granulated, and dried. Add 30 parts by weight of corn stalk biochar into the coating machine, add fertilizer core, spray corn starch binder, coat and dry. 25 parts by weight of corn stalk-based water-retaining material are added, coated and dried to obtain a special fertilizer for Cymbidium.

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Abstract

The invention discloses an environmentally friendly charcoal-based water-retention slow-release fertilizer, which takes a nutrition component as a core, takes charcoal base as an internal layer coating material, and a degradable water-retention material as an external layer coating material; the nutrition component is at least one of potassium sulfate, potassium dihydrogen phosphate and urea; the charcoal-based water-retention slow-release fertilizer comprises the following raw materials by mass percentages: 5-30% of degradable water retention material, 10-40% of charcoal base, 0-20% of potassium sulfate, 0-20% of potassium dihydrogen phosphate and 0-40% of urea; wherein potassium sulfate, potassium dihydrogen phosphate and urea can not be zero at same time. The invention also discloses a preparation method and an application of the charcoal-based water-retention slow-release fertilizer, the charcoal-based water-retention slow-release fertilizer has excellent water retention and slow release effects, and has the advantages of green environmental protection and soil improvement, and the raw material has the advantages of low price and wide source, and is benefit for industrial popularization.

Description

technical field [0001] The invention relates to the field of fertilizer preparation, in particular to an environmentally friendly biochar-based water-retaining and controlled slow-release fertilizer, a preparation method and application thereof. Background technique [0002] For a long time, water and fertilizer factors in agriculture are the most important factors affecting crop yield and efficiency. Slow / controlled release fertilizer is a new type of fertilizer that releases nutrients according to the nutritional needs of crops at different growth stages. It has the characteristics of controlled fertilizer nutrient release and long fertilizer effect cycle, which can increase the utilization rate of traditional chemical fertilizers by 50% to more than double. Therefore, slow / controlled release fertilizers are called "21st century fertilizers" due to their characteristics of improving fertilizer utilization, reducing fertilizer application, reducing environmental pollution o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/04C05G3/00C05G3/80
Inventor 裴克梅王伟民杨生茂
Owner 济宁益生旺农业科技有限公司
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