Mixing compound fertilizer special for corn capable of slowly releasing urea formaldehyde

A corn-specific, urea-formaldehyde slow-release technology, applied in urea compound fertilizers, fertilizer mixtures, applications, etc., can solve the problems of high production costs and sales prices, restrictions on large-scale use, etc., to promote the formation of soil aggregate structure and improve fertilizer utilization rate, increase the effect of corn yield

Inactive Publication Date: 2017-05-31
SHANDONG AGRICULTURAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most urea-formaldehyde fertilizers are non-agricultural commodities, mainly used in turf professional households, gardening, nursery farms, etc. The main reason is that its production cost and sales price are significantly higher than traditional fertilizers, which limits its large-scale use in fields of corn and other grain crops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The ratio of various raw materials required for preparation is as follows: 170 kg of granular urea-formaldehyde fertilizer, 210 kg of ordinary urea, 280 kg of granular superphosphate, 280 kg of granular potassium sulfate, 60 kg of granular magnesium sulfate, and 60 kg of granular zinc sulfate. 2 kg, 3 kg of granular borax. The above-mentioned raw materials are blended evenly to prepare the special blended compound fertilizer for the required urea-formaldehyde slow-release corn.

[0017] Two treatment groups were set up in the same corn field for comparison:

[0018] Treatment 1: Fertilize the fertilizer prepared in this example at an application rate of 100 kg per mu. The fertilization method is to sow and fertilize with a fertilizer simulcast machine. The sowing depth is 3-5 cm, and the fertilizer burial depth is 15-20 cm. Corn does not need topdressing during the entire growth period.

[0019] Treatment 2: The farmers' customary fertilization is used as the control ...

Embodiment approach 2

[0022] The ratio of various raw materials required for preparation is: 210 kg of powdered urea-formaldehyde fertilizer, 170 kg of ordinary urea, 320 kg of powdered superphosphate, 320 kg of granular potassium sulfate, 60 kg of powdered magnesium sulfate, and 60 kg of powdered magnesium sulfate. 2 kg of zinc sulfate, 3 kg of powdered borax. The above-mentioned raw materials are put into a pulverizer to be pulverized, mixed evenly, and then put into a granulator for granulation to make a special blended compound fertilizer for urea-formaldehyde slow-release corn.

[0023] Two treatment groups were set up in the same corn field for comparison:

[0024] Treatment 1: Fertilize the fertilizer prepared in this example at an application rate of 100 kg per mu. The fertilization method is to sow and fertilize with a fertilizer simulcast machine. The sowing depth is 3-5 cm, and the fertilizer burial depth is 15-20 cm. Corn does not need topdressing during the entire growth period.

[0...

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PUM

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Abstract

The invention relates to a mixing compound fertilizer special for corn capable of slowly releasing urea formaldehyde. The mixing compound fertilizer comprises the following components in parts by weight: 160-220 parts of urea formaldehyde fertilizer, 180-250 parts of common urea, 250-450 parts of calcium superphosphate, 200-350 parts of potassium sulfate fertilizer, 50-100 parts of magnesium sulfate fertilizer, 2-3 parts of zinc sulfate fertilizer and 2-3 parts of borax fertilizer. In the mixing compound fertilizer, the urea formaldehyde nitrogen is 40%-50% of the total nitrogen application rate; once the fertilizer is applied as a base fertilizer, no topdressing is required in the whole growth period of the corn; according to the invention, the urea formaldehyde fertilizer is reasonably mixed with the common urea; the phosphorous content can be reduced and the potassium content can be increased obviously according to the growth season and fertilizer requiring characteristics of the corn; the requirements for the three nutrient elements, namely, nitrogen, phosphorus and potassium, all the medium elements, namely, calcium, magnesium and sulfur, and the microelements, namely, zinc and boron, which are required by the growth and development of the medium/high-fertility field corn crops can be met; the mixing compound fertilizer has a topdressing-free characteristic and is capable of increasing the economic benefit and saving manpower; compared with the present enveloping controlled-release fertilizer, the mixing compound fertilizer has the advantage that no plastic film residue is remained in the soil.

Description

technical field [0001] The invention relates to a urea-formaldehyde slow-release corn special blended compound fertilizer, which belongs to the technical field of crop special fertilizers. Background technique [0002] Corn is one of the important food crops in my country, with a sown area of ​​240 million hectares, ranking third only to rice and wheat in terms of sown area and yield. The application of chemical fertilizers is one of the measures to maintain a high yield of corn, but the nutrient utilization rate of chemical fertilizers in my country is not high, and the nitrogen fertilizer use rate is only 30-35%. The development and application of slow-release fertilizers is an important and effective measure to improve fertilizer efficiency. Urea-formaldehyde fertilizer is a kind of slow-release fertilizer. While meeting the nutrient needs of crops throughout the growth period, it can maximize the utilization rate of fertilizers and increase economic, social and environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08A01C21/00C05G3/90
CPCA01C21/005C05B1/02C05G3/00C05G3/90C05C9/00C05C9/02C05D1/02C05D5/00C05D9/00C05D9/02Y02P60/21
Inventor 陈宝成李峰马宁周华敏王晓琪朱家辉梁海刘之广王淳李成亮
Owner SHANDONG AGRICULTURAL UNIVERSITY
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