Special fertilizer for cold water paddy rice, and preparation and application method thereof

A technology of special fertilizer and cold soaking field, which is applied in the agricultural field and achieves the effects of easy-to-obtain raw material sources, significant economic benefits, and simple preparation method

Inactive Publication Date: 2011-10-19
建瓯市光祥莲子专业合作社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This fertilizer effectively changes the physical and chemical properties of alkaline soil, making the soil truly improved and suitable for rice growth, but it cannot be used as an effective fertilizer to meet the needs of planting rice in cold-stained fields due to the inherent defects of cold-stained fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The concrete steps of the preparation method of this special fertilizer for rice comprise:

[0022] 1) Raw material treatment: first crush urea, diammonium phosphate, potassium chloride, calcium magnesium phosphorus, zinc sulfate and weathered coal with a crusher, and all materials are passed through a 80-mesh screen;

[0023] 2) Mixing of materials: weigh each material according to the stated mass fraction, and send them into the mixer to evenly stir them up and down, left and right, inside and outside, so that the materials can be fully mixed;

[0024] 3) Turntable granulation: Firstly, the materials accounting for 40-50% of the total weight of the mixture are transported to the disc granulator for granulation, and the inclination angle of the turntable of the granulator is controlled at 40 0 ~50 0 , the rotation speed of the granulator should be gradually increased, and the final rotation speed should be controlled at 50-60r / min, and the water should be sprayed inte...

Embodiment 1

[0028] Materials such as urea, diammonium phosphate, potassium chloride, calcium magnesium phosphorus, zinc sulfate and weathered coal are sent to the crusher for crushing, and the crushed samples are passed through a 80-mesh sieve. After sieving, the materials are mixed according to a certain ratio, including 210kg of urea, 140kg of diammonium phosphate, 250kg of potassium chloride, 110kg of zinc sulfate, 170kg of calcium magnesium phosphorus and 120kg of weathered coal. Stir evenly inside and outside, so that the material can be fully mixed. Firstly, the material accounting for 40-50% of the total weight of the mixed material is transported to the disc granulator for granulation. The speed of the granulator is controlled at 40-50r / min, and water is intermittently sprayed to allow the material to rotate in the turntable for 7 ~9min, make the wet material on the surface turn over to form a ball core, and then add the remaining material continuously to make the ball core grow g...

Embodiment 2

[0031] Materials such as urea, diammonium phosphate, potassium chloride, calcium magnesium phosphorus, zinc sulfate and weathered coal are sent to the crusher for crushing, and the crushed samples are passed through a 100-mesh sieve. After sieving, the materials are mixed according to a certain proportion, including 220kg of urea, 160kg of diammonium phosphate, 220kg of potassium chloride, 130kg of zinc sulfate, 160kg of calcium magnesium phosphorus and 110kg of weathered coal. Stir evenly inside and outside, so that the material can be fully mixed. First, transport 500 kg of the mixed material to the disc granulator for granulation. The speed of the granulator is controlled at 60r / min, and water is sprayed intermittently, so that the material rotates in the turntable for 8 minutes, so that the wet material on the surface is turned. Form the core, and then add the remaining materials continuously to make the core grow gradually. The entire granulation time is controlled within...

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Abstract

The invention relates to a special fertilizer for cold water paddy rice, and a preparation and application method thereof. Raw materials of the special fertilizer comprise, by weight, 20 to 25 parts of urea, 10 to 20 parts of diammonium phosphate, 20 to 25 parts of potassium chloride, 15 to 20 parts of calcium magnesium phosphor, 10 to 15 parts of zinc sulfate and 10 to 20 parts of weathered coal. The special fertilizer for cold water paddy rice provided in the invention is developed and prepared by composite granulation on basis of characteristics of soil constraints of cold water fields, pattern of nutrient demands of crops and suitability among fertilizer varieties. According to the invention, the preparation method is simple, and the prepared fertilizer has lasting fertility and can effectively overcome soil constraints of cold water fields.

Description

technical field [0001] The invention belongs to the field of agriculture, and more specifically relates to a special fertilizer for rice in cold-soaked field and its preparation and use method. Background technique [0002] At present, my country's urbanization and industrialization are advancing rapidly, and the trend of non-agricultural construction occupying cultivated land is irreversible, and the contradiction between man and land will further increase. Making full use of the limited cultivated land resources to improve the quality of cultivated land and the productivity of cultivated land is a major issue in my country's current agricultural supervision. In order to ensure food security, the state has promulgated the "National Increased Grain Production Capacity Plan of 100 Billion Jin" (2008-2020), and the cold soaking field is the main low-to-medium yield field in the Jiangnan region of my country, with a wide distribution area and low yield. Affected by farming dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00A01C21/00A01G16/00A01G22/22
Inventor 李清华王飞何春梅林诚李昱林新坚
Owner 建瓯市光祥莲子专业合作社
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