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

A coated slow-release, biomass charcoal technology, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve problems such as environmental pollution, high price, and restrictions on the promotion and application of fertilizers, so as to reduce fertilizer usage and improve fertilizer utilization efficiency. , Significant slow release effect

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 after application, and the price is expensive, which limits the popularization and application of this type of fertilizer.

Method used

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

Examples

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Embodiment 1

[0026] A biochar-coated slow-release fertilizer is characterized in that it is made of the following raw materials in parts by weight (Kg): rice husk 30, 3-6wt% sodium hydroxide solution 60, corn stalk 10, urea 20, attapulgite Soil 20, ammonium bicarbonate 10, potassium sulfate 10, trace elements 5, calcium magnesium phosphate fertilizer 25, binder 8 and appropriate amount of water;

[0027] The binder is made of the following raw materials in parts by weight: polyvinyl alcohol 14, limestone powder 4, coal tar 5, sodium bicarbonate 1, chitin 3, sodium dodecylbenzenesulfonate 1, 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 / min for 30-40min, let it stand for 20min under heat preservation until the foam disappears, and finally add polyv...

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Abstract

The invention discloses a biomass charcoal-enveloped controlled-release fertilizer and a preparation method thereof. The fertilizer is prepared from the raw materials of, by weight: 20-30 parts of rice husk, 45-70 parts of a 3-6wt% sodium hydroxide solution, 10-15 parts of corn straw, 20-30 parts of urea, 15-25 parts of attapulgite, 10-15 parts of ammonium bicarbonate, 8-12 parts of potassium sulfate, 4-6 parts of trace elements, 15-25 parts of a calcium-magnesium-phosphorous fertilizer, 6-8 parts of a binding agent and a proper amount of water. Specifically, the enveloped controlled-release fertilizer is prepared with a rice husk and plant straw sealed charring technology and with the binding agent prepared from polyvinyl alcohol. As a result of tests, the biomass charcoal-enveloped controlled-release fertilizer has a significant controlled release effect. According to different plant requirements, the controlled-release speed can be adjusted by adjusting the proportion of the added enveloping agent. Most of the components in the enveloping agent is biomass charcoal, such that the pollution degree to the environment is almost zero. Also, a fertilizer dose is reduced, and fertilizer utilization rate is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a biochar-coated 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. Therefore, it has beco...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 刘善和王晓亭黄会真吴德清
Owner MAANSHAN KEBANG ECO FERTILIZER
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