Special control-release fertilizer for rape and preparation method thereof

A technology for controlled-release fertilizer and rapeseed, which is applied in the field of special controlled-release fertilizer for rapeseed and its preparation, can solve the problems of long root system distance and unfavorable absorption, and achieves the effects of less nutrients, improved fertilizer utilization rate, and reduced fixation.

Active Publication Date: 2009-02-25
KINGENTA ECOLOGICAL ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rapeseed topdressing is generally applied on the surface, which is not conducive to the absorption of phosphate fertilizers with little mobility due to the long distanc

Method used

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  • Special control-release fertilizer for rape and preparation method thereof

Examples

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Example Embodiment

[0046] Example 1: Special controlled-release fertilizer for rape, total nutrients: nitrogen, phosphorus pentoxide, and potassium oxide content are 23%, 10%, and 10% respectively, all of which are mass percentages. The raw material components are as follows:

[0047] 3% sulfur plus resin coated urea 129kg

[0048] 4% sulfur plus resin coated urea 100kg

[0049] 6% sulfur plus resin coated urea 60kg

[0050] 3% sulfur plus resin coated potassium nitrate 190kg

[0051] 4% sulfur plus resin coated ammonium phosphate 150kg

[0052] Diammonium phosphate 108kg

[0053] Potassium sulfate 80kg

[0054] Urea 170kg

[0055] Zinc sulfate 5kg

[0056] Borax 8kg.

[0057] Preparation method: Put the above-mentioned raw materials into a mixer according to the proportion and stir for 5-10 minutes, and mix well to obtain.

Example Embodiment

[0058] Example 2: Special controlled-release fertilizer for rape, total nutrients: nitrogen, phosphorus pentoxide, and potassium oxide content are 21%, 13%, and 10% respectively, all of which are mass percentages. The raw material components are as follows:

[0059] 3% sulfur plus resin coated urea 117kg

[0060] 4% sulfur plus resin coated urea 85kg

[0061] 6% sulfur plus resin coated urea 45kg

[0062] 3% sulfur plus resin coated potassium nitrate 190kg

[0063] 4% sulfur plus resin coated ammonium phosphate 200kg

[0064] Diammonium phosphate 130kg

[0065] Potassium sulfate 80kg

[0066] Urea 140kg

[0067] Zinc sulfate 5kg

[0068] Borax 8kg.

Example Embodiment

[0069] Example 3: Special controlled-release fertilizer for rape, total nutrients: nitrogen, phosphorus pentoxide, and potassium oxide content are 21%, 13%, and 11% respectively, all of which are mass percentages. The raw material components are as follows:

[0070] 3% sulfur plus resin coated urea 150kg

[0071] 4% sulfur plus resin coated urea 60kg

[0072] 6% sulfur plus resin coated urea 90kg

[0073] 3% sulfur plus resin coated potassium nitrate 140kg

[0074] 4% sulfur plus resin coated ammonium phosphate 180kg

[0075] Diammonium phosphate 150kg

[0076] Potassium sulfate 120kg

[0077] Urea 100kg

[0078] Borax 8kg.

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Abstract

The invention relates to a controlled release fertilizer special for rape and the preparation method thereof, which is prepared with sulphur-plus-resin coated urea of different coating thicknesses, 3 percent of sulphur-plus-resin coated potassium nitrate, 4 percent of sulphur-plus-resin coated ammonium phosphate, diammonium phosphate, potassium sulfate, etc., compound preparations. The controlled release fertilizer special for rape of the invention is applied as base fertilizer in once applied fertilizing before the rape is sowed, thereby saving manpower and efforts, enhancing the utilization ratio of fertilizer, meeting the requirement for nitrogen, phosphor and potassium by rape in the annual growth period and delivering good yield of increase effect.

Description

technical field [0001] The invention relates to a special controlled-release fertilizer for rape and a preparation method thereof, belonging to the technical field of slow / controlled release fertilizers. Background technique [0002] Rapeseed production is distributed all over the world. In 2000, the world's rapeseed planting area was 25.22 million hectares, with an output of 37.6 million tons. Rapeseed is an important source of edible vegetable oil. In 2002, rapeseed oil accounted for 12.4% of the world's vegetable oil and 32.1% of my country's vegetable oil. Rapeseed is also an important industrial raw material and source of feed protein. At present, my country's rapeseed cultivation area is about 6.3 million hectares, which is far from meeting the needs. Improving the cultivation level of rapeseed in our country, increasing yield and improving quality are the main goals at present, and rational fertilization is one of the important measures to achieve these goals. [0...

Claims

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Application Information

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IPC IPC(8): C05G3/08A01C21/00C05C9/00C05C5/02C05D1/02C05D9/00C05B7/00C05G3/90
Inventor 万连步张民吴清伟黄仁现王仕青
Owner KINGENTA ECOLOGICAL ENG GRP
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