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Compound fertilizer special for sweet potatoes and preparation method thereof

A special compound fertilizer technology for sweet potatoes, applied in application, fertilization equipment, fertilizer mixture, etc., can solve the problems of excessive nitrogen fertilizer application and yield reduction, and achieve the effects of prolonging fertilizer efficiency, promoting absorption, and promoting the conversion of matter and energy

Inactive Publication Date: 2015-07-22
JIANGSU XUHUAI DISTRICT XUZHOU AGRI SCI INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in production, because sweet potatoes were mostly planted in barren or marginal areas in the past, coupled with the old fertilization concept of many farmers, the relative amount of nitrogen fertilizer was too much, which resulted in high yields on barren land, but on high-fertility land Instead, it will lead to a reduction in production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of special compound fertilizer for sweet potato, each raw material is composed of: 8 parts of urea, 20 parts of monoammonium phosphate, 36 parts of potassium sulfate, 30 parts of weathered coal and 6 parts of bentonite. The bentonite is a bonded cement material.

[0021] The preparation method is as follows:

[0022] Ingredients: First, urea, monoammonium phosphate, potassium sulfate, weathered coal, bentonite and other raw materials are weighed and pulverized according to the proportion, so that the particle diameter of each raw material component is 0.1-0.5mm. Then mix thoroughly with a batch mixer.

[0023] Extrusion granulation: The fully mixed material enters the feed port through the conveyor belt, and then granulates through the extrusion granulator.

[0024] Screening: After multi-stage screening and polishing by a polishing machine, the finished fertilizer with a particle diameter of 2-4.5mm is obtained. Fertilizer granules with a diameter less than 2...

Embodiment 2

[0028] A kind of special compound fertilizer for sweet potato, each raw material is composed of: 10 parts of urea, 20 parts of monoammonium phosphate, 24 parts of potassium sulfate, 40 parts of weathered coal and 6 parts of bentonite. The bentonite is a bonded cement material.

[0029] The preparation method is the same as in Example 1. The nutrient content of the prepared sweet potato special compound fertilizer is N:P 2 o 5 :K 2 O=7:8:12.

[0030] This special compound fertilizer for sweet potato is suitable for use as a base fertilizer in plots with high basic soil fertility, and the application rate is 750kg / hm 2 , which is about 11% higher than farmers' customary fertilization methods.

Embodiment 3

[0032] A kind of special compound fertilizer for sweet potato, each raw material is composed of: 8 parts of urea, 20 parts of monoammonium phosphate, 18 parts of potassium sulfate, 48 parts of weathered coal and 6 parts of bentonite. The bentonite is a bonded cement material.

[0033] The preparation method is the same as in Example 1. The nutrient content of the prepared sweet potato special compound fertilizer is N:P 2 o 5 :K 2 O=6:8:9.

[0034] This special compound fertilizer for sweet potato is suitable for use as a base fertilizer in plots with high basic soil fertility, and the application rate is 750kg / hm 2 , which is about 8% higher than farmers' customary fertilization methods.

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Abstract

The invention relates to a compound fertilizer special for sweet potatoes and a preparation method thereof. The compound fertilizer comprises the following raw materials by mass: 8-16 parts of urea, 20-25 parts of monoammonium phosphate, 24-36 parts of potassium sulfate, 20-50 parts of weathered coal, and 6 parts of bentonite. The compound fertilizer special for sweet potatoes involve in the invention is a compound fertilizer that is formed by mixing of a natural organic matrix and an inorganic fertilizer and has the characteristics of simple production process, low cost, environmental-friendliness, high fertilizer utilization rate, production increase and efficiency improvement, etc.

Description

technical field [0001] The invention relates to a special compound fertilizer for sweet potatoes and a preparation method thereof, belonging to the field of fertilizer production. Background technique [0002] In recent years, the focus of research and development and application of new fertilizers at home and abroad has shifted from single mineral fertilizers to compound fertilizers. Compound fertilizers for crops are very popular in the market due to their rich nutrient elements, reasonable ratio and convenient application. The sown area and total output of sweet potato rank fourth after rice, wheat and corn in my country. In addition to being used as feed and health products, sweet potato is also an important raw material for hundreds of industrial products. It can be called a cheap renewable energy crop and occupies an extremely important position in the national economy. However, in production, because sweet potatoes were mostly planted in barren or marginal areas in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 陈晓光张晓冬后猛李洪民张爱君史新敏唐忠厚魏猛
Owner JIANGSU XUHUAI DISTRICT XUZHOU AGRI SCI INST
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