Biomass charcoal-enveloped water-retaining controlled-release fertilizer and preparation method thereof

A technology of biomass charcoal and slow-release fertilizer, applied in fertilizer mixture, fertilization device, application and other directions, can solve the problems of restricting the popularization and application of fertilizer, environmental pollution, high price, etc., achieve excellent slow-release effect, reduce frequent use, save money effect of spending

Inactive Publication Date: 2015-10-14
MAANSHAN KEBANG ECO FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, most of them use fat-soluble substances in the production process, which is easy to pollute the environment

Method used

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  • Biomass charcoal-enveloped water-retaining controlled-release fertilizer and preparation method thereof
  • Biomass charcoal-enveloped water-retaining controlled-release fertilizer and preparation method thereof

Examples

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Embodiment 1

[0026] A biochar-coated water-retaining slow-release fertilizer, characterized in that it is made of the following raw materials in parts by weight: 30 parts by weight of corn stalks, 30 parts by weight of plantain wood chips, 100 parts by weight of sodium hydroxide solution, 10 parts by weight of fine-pore silica gel, and 10 parts by weight of ammonium bicarbonate 26. Calcium phosphate 16, potassium sulfate 15, magnesium chloride 10, zinc sulfate 3, binder 5 and appropriate amount of water;

[0027] The binder is made of the following raw materials in parts by weight: polyvinyl alcohol 15, limestone powder 3, coal tar 4, sodium bicarbonate 1, chitin 2, sodium dodecylbenzene sulfonate 2, tributyl phosphate 0.5, ethanol 6 and water 50; the preparation method is to mix and dilute ethanol and water in a reaction kettle, then add coal tar, sodium dodecylbenzenesulfonate, sodium bicarbonate and tributyl phosphate, and heat to 70~ Stir at 80°C at a constant temperature of 350-600r / m...

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PUM

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Abstract

The invention discloses a biomass charcoal-enveloped water-retaining controlled-release fertilizer and a preparation method thereof. The fertilizer is prepared from the raw materials of, by weight, 25-40 parts of corn straw, 20-35 parts of musa basjoo tree wood chips, 100-140 parts of a 5wt% sodium hydroxide solution, 10-15 parts of fine-pore silica gel, 20-26 parts of ammonium bicarbonate, 12-16 parts of calcium phosphate, 10-15 parts of potassium sulfate, 6-10 parts of magnesium chloride, 3-6 parts of zinc sulfate, 5-7 parts of a binding agent and a proper amount of water. According to the invention, straw is soaked with the low-concentration alkali liquor before charring. After ball milling, the material is divided into a floccule part and a woody part, and the woody part with a high charcoal yield is used for charring. Excellent biomass charcoal has high adsorption capacity, and has water retention and fertilizer retention capacities. The fertilizer is pollution-free, and has an excellent sustained-release effect. With the fertilizer, fertilizer usage frequency can be reduced, and cost can be saved in various aspects of production.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a biochar-coated water-retaining slow-release fertilizer and a preparation method thereof. Background technique [0002] Slow-release fertilizers can not only improve fertilizer use efficiency, but also reduce the negative impact of fertilization on the environment, which has attracted extensive attention of scholars in recent years. The current research on coated slow-release fertilizers mainly focuses on the selection and development of coating materials. Organic polymer coated slow-release fertilizers can slow down nutrient release and improve fertilizer use efficiency, which has been widely recognized. [0003] However, most of them use fat-soluble substances in the production process, which is easy to cause pollution to the environment after application, and the price is high, which limits the popularization and application of this type of fertilizer. Theref...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 张彤彤赵广福周浩陈永山
Owner MAANSHAN KEBANG ECO FERTILIZER
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