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

A urea-formaldehyde slow-release and compound fertilizer technology, which is applied in urea compound fertilizer, rice cultivation, fertilizer mixture, etc., can solve the problems of high production cost and sales price, and limit the use of large areas, so as to achieve high utilization rate and reduce phosphorus content , the effect of labor saving

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 rice and other food crops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The various raw materials required for preparation are according to the mass ratio: 150 kg of granular urea-formaldehyde fertilizer, 210 kg of ordinary urea, 290 kg of granular superphosphate, 260 kg of granular potassium sulfate fertilizer, 60 kg of granular magnesium sulfate fertilizer, and 60 kg of granular zinc sulfate fertilizer 2 kg, 3 kg of granular borax fertilizer. The above-mentioned raw materials are blended evenly to prepare the required urea-formaldehyde slow-release special blended compound fertilizer for rice.

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

[0018] Treatment 1: Fertilize the fertilizer prepared in this example at an application rate of 100 kilograms per mu. The method of fertilization is to spread the fertilizer evenly on the ground before planting, then plow the soil to a depth of 15-20 cm, then water, plow the ground, and transplant rice seedlings. . During the whole growth period of rice, topdressing...

Embodiment approach 2

[0022] The various raw materials required for preparation are: 200 kg of powdered urea-formaldehyde fertilizer, 180 kg of ordinary urea, 330 kg of powdered superphosphate, 300 kg of granular potassium sulfate fertilizer, 60 kg of powdered magnesium sulfate fertilizer, 60 kg of powdered sulfuric acid 2 kg of zinc fertilizer, 3 kg of powdered borax fertilizer. Put the above-mentioned raw materials into a pulverizer to pulverize, mix them evenly, and put them into a granulator for granulation to make a compound fertilizer specially blended with urea-formaldehyde slow-release rice.

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

[0024] Treatment 1: Fertilize the fertilizer prepared in this example at an application rate of 100 kilograms per mu. The method of fertilization is to spread the fertilizer evenly on the ground before planting, then plow the soil to a depth of 15-20 cm, then water, plow the ground, and transplant rice seedlings. . Duri...

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PUM

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Abstract

The invention relates to a mixing compound fertilizer special for paddy capable of slowly releasing urea formaldehyde. The mixing compound fertilizer comprises the following components in parts by weight: 100-160 parts of urea formaldehyde fertilizer, 180-250 parts of common urea, 280-430 parts of calcium superphosphate, 200-320 parts of potassium sulfate fertilizer, 50-80 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 30%-40% of the total nitrogen application rate; once the fertilizer is applied as a base fertilizer, no topdressing is required; the mixing compound fertilizer can meet the requirements of the growth season and fertilizer requirement of the paddy, can obviously reduce the phosphorous content and increase the potassium content and can meet 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 paddy crops; the mixing compound fertilizer has the characteristics of long nitrogen fertilizer efficiency period, high use ratio, capabilities of boosting the paddy growth, increasing the paddy yield and saving the nitrogen fertilizer dosage; 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 special mixed compound fertilizer for urea-formaldehyde slow-release rice and belongs to the technical field of special crop fertilizers. Background technique [0002] Rice is one of the most important food crops in my country, with a sown area of ​​450 million mu, and its sown area and output rank first among food crops. Applying chemical fertilizers is one of the measures to maintain a high rice yield, 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 environmental benefits. At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00A01B79/02A01G16/00A01G22/22
CPCA01B79/02A01G22/22C05B1/02C05C9/00C05C9/02C05D1/02C05D5/00C05D9/00C05D9/02
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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