Eucalyptus controlled release fertilizer and preparation process thereof

A technology for eucalyptus and fertilizer, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of white pollution of polyethylene plastic, inability to effectively release fertilizer, porous or disintegrating, etc., to improve the encapsulation rate and save costs. , the effect of reducing the dosage

Active Publication Date: 2014-04-16
叶长东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent 96105688 discloses a coating fertilizer, wherein the composition of the soil layer is except 0.1~50 parts of animal glue, mainly soluble inorganic salts, such as 1~180 parts of solubilizer (its main components are ammonium sulfate, ammonium nitrate and other inorganic salts) and 0.1 to 200 parts of plant nutrient element compounds (mainly iron and zinc sulfates), resulting in a large amount of soluble inorganic salts in the animal glue-wrapped coating, which dissolve quickly after contact with water and make the fertilizer particles porous shape or disintegration, the actual sustained release (controlled release) ability is very limited
As another example, Chinese patent CN202072642U discloses a special slow-release compound fertilizer for eucalyptus that is included in an organic coating layer, but the main components of the organic coating layer are polyethylene and paraffin, which are difficult to degrade and cannot effectively release the internal fertilizer, even causing polyethylene plastic white pollution

Method used

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  • Eucalyptus controlled release fertilizer and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The wrapping of embodiment 1 inorganic fertilizer

[0027] Take 25 kg of ammonium chloride, 60 kg of diammonium phosphate, 8 kg of potassium chloride, 1 kg of borax, 0.5 kg of zinc sulfate heptahydrate, and 0.5 kg of copper sulfate pentahydrate, mix well, then add 2 kg of urea and 3 kg of water , mixed evenly, crushed, sieved and granulated to make granules with a diameter of about 0.5mm, which is unpacked fertilizer.

[0028] Take 1 kg of BergaFat HTL316 (available from Huixingao Animal Husbandry Co., Ltd., Nanning, Guangxi) and melt it in an oven at 60°C, and then spray it all evenly onto 9 kg of the above-prepared granules with a fluidized granulation coating machine Inorganic fertilizer 1 is obtained by forming an encapsulation layer on the surface of the surface; another 4 kg of BergaFat HTL316 (available from Guangxi Nanning Huixingao Animal Husbandry Co., Ltd.) is melted in a 60°C oven, and then used in a fluidized granulation bag The clothes machine uniformly s...

Embodiment 2

[0029] Embodiment 2 The wrapping of the fertilizer containing fulvic acid

[0030] Take 20 kg of ammonium chloride, 48 kg of diammonium phosphate, 6.4 kg of potassium chloride, 0.8 kg of borax, 0.4 kg of zinc sulfate heptahydrate, and 0.4 kg of copper sulfate pentahydrate. After mixing evenly, add 21 kg of fulvic acid, 1 Kg of urea and 2 kg of water, mixed evenly, crushed, sieved and granulated to make granules with a diameter of about 0.5mm.

[0031] Take 1 kg of BergaFat HTL316 (available from Huixingao Animal Husbandry Co., Ltd., Nanning, Guangxi) and melt it in an oven at 60°C, and then spray it all evenly onto 9 kg of the above-prepared granules with a fluidized granulation coating machine A coating layer is formed on the surface of the fertilizer, that is, a fertilizer containing fulvic acid is obtained.

Embodiment 3

[0032] The dissolution rate test of embodiment 3 package fertilizer

[0033] Get the inorganic fertilizer 1, inorganic fertilizer 2 and the fertilizer containing fulvic acid prepared in Examples 1 and 2, and take the non-wrapped fertilizer prepared in Example 1 and the fertilizer wrapped with polyethylene as a contrast, immerse in clear water, in different Timely water samples were taken to detect the dissolution rate of fertilizers, and the results are shown in the table below:

[0034]

[0035] The unwrapped fertilizer dissolved almost immediately, indicating that it could not have a slow-release effect; the fertilizer wrapped with polyethylene dissolved at the beginning except for the fertilizer particles that were not wrapped and sealed (encapsulated), and then almost no longer released fertilizer; the package of inorganic fertilizer 1 The encapsulation is low, causing a large amount of fertilizer to dissolve at the beginning, but the encapsulated fertilizer can be cont...

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Abstract

The invention provides a eucalyptus controlled release (namely slow release) fertilizer. The fertilizer comprises an outer coating layer and inner fertilizer particles in a weight ratio of (0.8-5):(5-12), wherein the fertilizer particles comprise nitrogen, phosphorus, potassium, boron, zinc and copper. In addition, the invention provides a preparation method and application of the eucalyptus fertilizer, and the like.

Description

technical field [0001] The invention belongs to the field of plant fertilizers, in particular, the invention relates to controlled-release fertilizers for eucalyptus. Background technique [0002] Eucalyptus grows fast and has excellent materials. It is a short-cycle economic tree that is currently popularized and planted in China. Its wood is widely used in papermaking and fiberboard processing. However, the demand for nutrients in the growth process of eucalyptus is greater than that of other tree species, so sufficient fertilizer must be applied to make eucalyptus grow normally. [0003] For this reason, some people have begun to study eucalyptus fertilizer at present. For example, Chinese patent application 03139716 discloses a trace element fertilizer, which contains two or more of B, Cu, Zn, Mn, Fe and Mo elements, and is used to prevent and treat eucalyptus deficiency diseases. [0004] At present, more are compound fertilizers composed of inorganic fertilizers and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 叶长东
Owner 叶长东
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