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A special slow and controlled release formula fertilizer for citrus crops and its preparation and application method

An application method and a technology of formula fertilizer, applied in the direction of fertilization method, application, fertilization device, etc., can solve the problems of not being able to meet the comprehensive nutrient needs of citrus crops in red soil areas, the number of fertilization times, and the high cost of manpower and material resources, so as to overcome the ability of fertilizer storage poor, high nutrient use efficiency, and the effect of increasing nitrogen use efficiency

Inactive Publication Date: 2017-10-03
INST OF SOIL FERTILIZER & RESOURCE ENVIRONMENT JIANGXI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the purpose of the present invention is to overcome the formula fertilizer in the prior art that cannot satisfy the overall nutritional needs of citrus crops in the red soil area, there are many times of fertilization, and the technical defect that the cost of manpower and material resources is high, thereby providing a fertilizer that can meet the needs of citrus crops in the red soil area. The comprehensive nutrient needs of crops, reducing the frequency of fertilization, reducing manpower and material resources, special slow-release formula fertilizer for citrus crops

Method used

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  • A special slow and controlled release formula fertilizer for citrus crops and its preparation and application method
  • A special slow and controlled release formula fertilizer for citrus crops and its preparation and application method
  • A special slow and controlled release formula fertilizer for citrus crops and its preparation and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The special slow and controlled release formula fertilizer for citrus crops provided in this example first weighed

[0051] 13% sulfur-coated type A coated urea 54kg; 9% resin-coated type B coated urea 161kg; potassium sulfate 240kg; diammonium phosphate 179kg; calcium magnesium phosphate fertilizer 190kg; magnesium sulfate 31kg; borax 10kg; zinc sulfate 10kg ; Synergist 10kg; Bentonite 115kg. Then the above-mentioned raw materials are put into a mixer and stirred until completely mixed uniformly, thereby preparing the formula fertilizer containing 12% nitrogen, 12% phosphorus pentoxide, 12% potassium oxide, and 4.0% calcium as a percentage of the total mass of the formula fertilizer. 1.4% magnesium, 4.8% sulfur, 0.11% boron, 0.22% zinc, 1.0% synergist and a slow and controlled release formula fertilizer with a total mass of 1 ton.

[0052] In this example, Type A coated urea is prepared by fluidized bed coating method by using commercially available urea and sulfur at...

Embodiment 2

[0054] The special slow and controlled release formula fertilizer for citrus crops provided in this example first weighed

[0055] 4% resin-coated type A coated urea 194kg; 10% resin-coated type B coated urea 238kg; potassium sulfate 320kg; diammonium phosphate 144kg; superphosphate 50kg; magnesium sulfate 31kg; borax 4.5kg; zinc sulfate 5kg; synergist 2kg; attapulgite 11.5kg. Then the above-mentioned raw materials are put into a mixer and stirred until they are completely mixed, thereby preparing the formula fertilizer containing 20% ​​nitrogen, 8% phosphorus pentoxide, 16% potassium oxide, and 1.0% calcium as a percentage of the total mass of the formula fertilizer. 0.3% magnesium, 6.7% sulfur, 0.05% boron, 0.11% zinc, 0.2% synergist, and a slow and controlled release formula fertilizer with a total mass of 1 ton.

[0056] In this example, type A coated urea is prepared by drum method using commercially available urea and resin at a mass ratio of 96:4; type B coated urea is...

Embodiment 3

[0058] The special slow and controlled release formula fertilizer for citrus crops provided in this example first weighed

[0059] 4% resin-coated type A coated urea 101kg, 10% resin-coated type B coated urea 152kg; potassium sulfate 360kg; diammonium phosphate 99kg; superphosphate 190kg; magnesium sulfate 50kg; borax 7.3kg; zinc sulfate 8.2kg; synergist 8kg; attapulgite 24.5kg. Then above-mentioned raw material is put into stirrer and stirs, until completely mix uniformly, thereby prepares and accounts for the percentage of described formula fertilizer total mass and contains nitrogen 12%, phosphorus pentoxide 8%, potassium oxide 18%, calcium 4.0%, 0.5% magnesium, 9.2% sulfur, 0.08% boron, 0.18% zinc, 0.8% synergist, and a slow and controlled release formula fertilizer with a total mass of 1 ton.

[0060] In this example, type A coated urea is prepared by disc spray coating method by using commercially available urea and resin at a mass ratio of 96:4; type B coated urea is p...

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Abstract

The invention provides a citrus special-purposed sustained-and-controlled-release formulated fertilizer, and a preparation method and an application method thereof. The formulated fertilizer comprises the following components according to the total mass of the fertilizer: 12-20% of nitrogen, 8-12% of phosphorus pentoxide, 12-18% of potassium oxide, 1-4% of calcium, 0.3-1.4% of magnesium, 4.8-9.2% of sulfur, 0.05-0.11% of boron, 0.11-0.22% of zinc, and 0.2-1% of a synergist. A total nutrient content of nitrogen, phosphorus pentoxide and potassium oxide is higher than 30%. A total nutrient content of nitrogen, phosphorus pentoxide, potassium oxide, calcium, magnesium, sulfur, boron and zinc is higher than 40%. 70% of nitrogen is provided by an A-type nitrogen fertilizer with a controlled-release period of 3-5 months and a B-type nitrogen fertilizer with a controlled-release period of 7-9 months. The nitrogen content of the A-type nitrogen fertilizer accounts for 20-55% of the total nitrogen content of the A-type nitrogen fertilizer and the B-type nitrogen fertilizer. With the formulated fertilizer, citrus yield can be improved, and citrus fruit soluble solid, sugar-acid ratio and VC content can be improved.

Description

technical field [0001] The invention relates to a special slow-controlled release formula fertilizer for citrus crops and a preparation and application method thereof, belonging to the technical field of fertilizer preparation and utilization. Background technique [0002] Citrus is one of the most important fruits in China. The planting area of ​​citrus in my country is about 2.288 million hectares, accounting for 19.3% of the total orchard area in the country. The total output of citrus in China is about 29 million tons every year. The red soil area is the main area for citrus production in my country, but red soil generally has problems such as low soil fertility, unbalanced nutrients, poor nutrient storage capacity, and soil acidification obstacles, which seriously limit the industrial development and economic benefits of citrus planted in red soil areas. promote. [0003] Citrus orchards in Jiangxi Province cover an area of ​​317,000 hectares, with an annual output of 3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/08A01C21/00C05G3/90
Inventor 夏文建刘秀梅刘增兵冀建华李祖章侯红乾王萍王少先张丽芳
Owner INST OF SOIL FERTILIZER & RESOURCE ENVIRONMENT JIANGXI ACAD OF AGRI SCI
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