Special controlled release fertilizer for corn and preparation method thereof

A technology for corn-specific, controlled-release fertilizers, applied in the fields of application, nitrogen, and potassium fertilizers, can solve problems such as lack of nutrient controlled release, lack, and high fertilizer prices, and achieve the goal of reducing labor intensity, labor costs, and fertilizer costs Effect

Active Publication Date: 2008-05-14
KINGENTA ECOLOGICAL ENG GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current controlled-release fertilizers have three problems for corn. First, the fertilizers that can achieve controlled release are expensive, generally several times that of ordinary fertilizers, and unacceptable in production.
Second, some water-soluble coating agents or inorganic coating agents cannot achieve the purpose of controlled release of nutrients during the rainy corn growing season
The third is the lack of controlled-release fertilizers whose nutrient release law matches the nutrient absorption law of corn

Method used

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  • Special controlled release fertilizer for corn and preparation method thereof

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Embodiment Construction

[0006] Technical scheme of the present invention is as follows:

[0007] A special controlled-release fertilizer for corn, the raw material components are as follows, all in parts by weight:

[0008] 5% thermoplastic resin coated urea 30-40 parts

[0009] 6% thermoplastic resin coated urea 5-15 parts

[0010] Sulfur-coated urea 250-350 parts

[0011] Potassium chloride compound fertilizer 400-500 parts

[0012] Potassium chloride 50~150 parts

[0013] 40-50 parts of large granular urea

[0014] 5-15 parts of zinc sulfate.

[0015] Above-mentioned raw material is commercially available product, and wherein:

[0016] 5% thermoplastic resin coated urea means that the quality of the coating layer is 5% of the total mass, produced and sold by Shandong Kingenta Ecological Engineering Co., Ltd., the model is KTP03(43-0-0);

[0017] 6% thermoplastic resin coated urea means that the quality of the coating layer is 6% of the total mass, produced and sold by Shandong Kingenta Ecol...

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Abstract

The invention relates to a special controlled release fertilizer for corn and preparation method, belonging to technical field of slow release and controlled release fertilizer. The invention is characterized in that the invention remix accurately the 5% and 6% of thermoplastic resin membrane urea, the sulfur membrane urea with the potassium chloride compound fertilizer, the potassium chloride, the large granule urea and the zinc sulfate according to fertilizer requirement of the maize to form the special formulation of controlled release fertilizer for maize. The invention has the advantages that the nutrient release law of the controlled release fertilizer is matched with the nutrient absorption law of the maize, in addition, the controlled release fertilizer costs can be decreased, furthermore, after fertilizing once the controlled release fertilizer before semination of maize, no supplementary fertilizer can be needed, the labor intensity and worker costs of farmer can be also reduced.

Description

technical field [0001] The invention relates to a method for a special controlled-release fertilizer for crops, in particular to a special controlled-release fertilizer for corn produced by using sulfur and thermoplastic resin coating and a preparation method thereof, belonging to the technical field of slow-release and controlled-release fertilizers. Background technique [0002] Corn is one of the main food crops in my country, and it is also an important feed crop. Maize has a high biological yield and requires a large amount of fertilizer. Scientific and rational fertilization is an important aspect of high-yield, high-quality and efficient development of maize production. Due to the fast dissolution rate of ordinary fertilizers, in addition to the rapid absorption of crops after being applied to the soil, in case of heavy rain or irrigation, a considerable part of the fertilizer will be washed to the ground with the soil water, resulting in fertilizer loss. In order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G3/08C05C9/00C05D1/00C05B7/00C05G3/90
Inventor 万连步于淑芳解玉洪颜明宵高义武
Owner KINGENTA ECOLOGICAL ENG GRP
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