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Urea-containing formaldehyde slow-release insecticide-fertilizer and preparation method thereof

A urea-formaldehyde, slow-release technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of time-consuming and labor-intensive, low utilization rate, short fertilizer effect period, etc. Effect

Inactive Publication Date: 2016-07-27
锦州硕丰农药集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of its short fertilizer effect period, timely topdressing is required, which is time-consuming and laborious and extremely disproportionate to modern agriculture; and because of its low utilization rate, volatilization, and serious loss, it causes serious pollution of water bodies and the atmosphere; massive waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The urea-formaldehyde-containing slow-release medicinal fertilizer is composed of the following raw materials: 40kg of compound fertilizer, 20kg of humic acid, 5kg of citric acid, 10kg of urea-formaldehyde, 1kg of chlorpyrifos, and 2kg of clothianidin.

[0023] The preparation steps are as follows:

[0024] 1.1 Add 20kg of humic acid, 5kg of citric acid and 10kg of urea-formaldehyde into the reaction kettle, add 150kg of water, and react at 70°C for 80 minutes to prepare a urea-formaldehyde sustained-release solution;

[0025] 1.2 Add 1 kg of chlorpyrifos and 2 kg of clothianidin to the urea-formaldehyde slow-release solution prepared in step 1.1, stir and mix evenly to obtain a urea-formaldehyde pesticide mixture;

[0026] 1.3 Add 40 kg of compound fertilizer raw materials into a granulator, and use the urea-formaldehyde pesticide mixture prepared in step 1.2 to carry out spray granulation to obtain a urea-formaldehyde-containing slow-release medicinal fertilizer. The...

Embodiment 2

[0028] The urea-formaldehyde-containing slow-release medicinal fertilizer is composed of the following raw materials: 70kg of compound fertilizer, 10kg of humic acid, 10kg of citric acid, 5kg of urea-formaldehyde, 2kg of chlorpyrifos, and 1kg of clothianidin.

[0029] The preparation steps are as follows:

[0030] 1.1 Add 10kg of humic acid, 10kg of citric acid and 5kg of urea-formaldehyde into the reactor, add 150kg of water, and react at 80°C for 60 minutes to prepare a urea-formaldehyde sustained-release solution;

[0031] 1.2 Add 2 kg of chlorpyrifos and 1 kg of clothianidin to the urea-formaldehyde slow-release solution prepared in step 1.1, stir and mix evenly to obtain a urea-formaldehyde pesticide mixture;

[0032] 1.3 Add 70kg of compound fertilizer raw materials into a granulator, and use the urea-formaldehyde pesticide mixture prepared in step 1.2 to carry out spray granulation to obtain a urea-formaldehyde-containing slow-release medicinal fertilizer. The medicina...

Embodiment 3

[0034] The urea-formaldehyde-containing slow-release medicinal fertilizer is composed of the following raw materials: 50kg of compound fertilizer, 15kg of humic acid, 8kg of citric acid, 8kg of urea-formaldehyde, 1.5kg of chlorpyrifos, and 1.5kg of clothianidin.

[0035] The preparation steps are as follows:

[0036] 1.1 Add 15kg of humic acid, 8kg of citric acid and 80kg of urea-formaldehyde into the reactor, add 150kg of water, and react at 75°C for 70 minutes to prepare a urea-formaldehyde sustained-release solution;

[0037] 1.2 Add 1.5kg chlorpyrifos and 1.5kg clothianidin to the urea-formaldehyde slow-release solution prepared in step 1.1, stir and mix evenly to obtain a urea-formaldehyde pesticide mixture;

[0038] 1.3 Add 60 kg of compound fertilizer raw materials into a granulator, and use the urea-formaldehyde pesticide mixture prepared in step 1.2 to carry out spray granulation to obtain urea-formaldehyde-containing slow-release medicinal fertilizer. The medicinal ...

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Abstract

The invention provides a urea-containing formaldehyde slow-release insecticide-fertilizer and a preparation method thereof. The fertilizer consists of the following raw materials: composite fertilizer, humic acid, citric acid, urea formaldehyde, chlorpyrifos and clothianidin. A preparation methods is as below: adding humic acid, citric acid and urea formaldehyde into a reaction kettle, and adding water to react, so as to obtain a urea-formaldehyde slow-release solution; adding chlorpyrifos and clothianidin into the urea formaldehyde slow-release solution, stirring and mixing evenly to obtain a urea formaldehyde pesticide mixed solution; adding a composite fertilizer feedstock into a granulator, conducting spray granulation by using the urea formaldehyde pesticide mixed solution obtained in step 1.2, so as to prepare a slow-release insecticide-fertilizer containing urea formaldehyde. The invention has the advantages of extending fertilizer period, improving utilization rate, achieving one time fertilization in agriculture, eliminating the step of dressing; and the invention also saves fertilizer and resources and reduces environmental pollution.

Description

technical field [0001] The invention relates to a slow-release medicinal fertilizer containing urea-formaldehyde and a preparation method thereof. Background technique [0002] In agricultural production, pesticides and fertilizers play an important role in increasing crop production and income. Pesticides can prevent pests and weeds, and fertilizers can provide essential nutrients for crops. With the development of agricultural science and technology, medicinal fertilizers that can prevent pests and weeds and provide nutrition have been produced and used one after another, and good results have been achieved. [0003] At present, most of the fertilizers in medicinal fertilizers are common fertilizers. Most of the nitrogen fertilizers are urea, ammonium chloride and ammonium phosphate. Because of its short fertilizer effect period, timely topdressing is required, which is time-consuming and laborious and extremely disproportionate to modern agriculture; and because of its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/02C05G3/60
Inventor 孟祥光孟薇
Owner 锦州硕丰农药集团有限公司
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