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Dedicated controlled-release fertilizer for rape containing long-acting boron nutrients, as well as preparation and application method of dedicated controlled-release fertilizer

A controlled-release fertilizer and rapeseed technology, which is applied in the production and application of controlled-release fertilizers, can solve problems such as the inability to meet the boron nutrition requirements of rapeseed, irrigation, rainfall loss, and difficulty in mixing, so as to increase the cost of coating and prolong the effect , high effectiveness

Active Publication Date: 2013-01-16
菏泽金正大生态工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Though also containing boron element nutrition (borax) in this invention formula, also there is deficiency, the one, borax is powdery, directly mixes with other granular raw materials, is not easy to mix; Because some components in the soil are fixed, the fertilizer effect is lost; moreover, borax is a quick-acting fertilizer, which may be lost due to irrigation, rainfall, etc., making it unable to meet the boron nutrition needs of rapeseed during and after growth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Rapeseed controlled-release fertilizer containing long-acting boron nutrition. The raw materials are: 350 kg of boron-containing weathered coal-coated urea I, 150 kg of boron-containing weathered coal-coated urea II, 300 kg of diammonium phosphate, and 200 kg of granular potassium chloride.

[0049] Preparation:

[0050] (1) Preparation of boron-containing weathered coal-coated urea I and boron-containing weathered coal-coated urea II:

[0051] Take 2 kg of boric acid and dissolve it in 6 kg of 90°C hot water, cool it to below 30°C, spray it on 15 kg of weathered coal, stir evenly while spraying, place it at room temperature for 5 hours, and dry it at 65°C. Grind and pass through a 100-mesh sieve to obtain a boron-containing weathered coal coating agent, which is set aside; take 10 kg of bisphenol A and 1.2 kg of triethylenetetramine, and mix the two evenly to obtain a binder;

[0052] Take granular urea with a particle size of 2 to 3 mm and put it in a drum to preheat t...

Embodiment 2

[0057] Rapeseed controlled-release fertilizer containing long-acting boron nutrition. The raw materials are: 400 kg of boron-containing weathered coal-coated urea I, 100 kg of boron-containing weathered coal-coated urea II, 350 kg of diammonium phosphate, and 150 kg of granular potassium chloride.

[0058] The preparation method is the same as in Example 1.

Embodiment 3

[0060] Rapeseed controlled-release fertilizer containing long-acting boron nutrition. The raw materials are: 300 kg of boron-containing weathered coal-coated urea I, 200 kg of boron-containing weathered coal-coated urea II, 250 kg of diammonium phosphate, and 250 kg of granular potassium chloride.

[0061] The preparation method is the same as in Example 1.

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Abstract

The invention relates to a dedicated controlled-release fertilizer for rape containing long-acting boron nutrients, as well as a preparation and application method of the dedicated controlled-release fertilizer. The dedicated controlled-release fertilizer comprises the components in part by weight: 250 to 450 parts of boron-contained weathered coal sulfur coated urea I, 150 to 300 parts of boron-contained weathered coal sulfur coated urea II, 200 to 400 parts of diammonium phosphate and 100 to 250 parts of granular potassium chloride, wherein boron-contained weathered coal sulfur coated urea I and boron-contained weathered coal sulfur coated urea II are respectively prepared by taking granular urea as core fertilizers through coating in the prior art, while the coating material contains boric acid and weathered coal according to the mass ratio of 1 : (5 to 10). The invention further provides a preparation method and an application of the dedicated controlled-release fertilizer for rape containing long-acting boron nutrients. The boron nutrients in the dedicated controlled-release fertilizer for rape are applied uniformly, the boron release speed is slow, the effective nutrient time of rape is prolonged, the yield increasing effect is good, the fertilizer application is convenient, and the cost is lowered.

Description

technical field [0001] The invention relates to a special controlled-release fertilizer for rape containing long-acting boron nutrition and a preparation and application method thereof, belonging to the technical field of production and application of controlled-release fertilizers. Background technique [0002] Boron is one of the essential micronutrients for higher plants, and an important feature of boron deficiency in plants is the abnormal development of reproductive organs. Rapeseed is one of the most important oil crops in my country, with an average annual planting area of ​​110 million to 120 million mu and a total output of about 10.5 million tons, ranking first in the world. Rapeseed is one of the most sensitive crops to boron, but there are varying degrees of boron-deficient soil in rapeseed producing areas in my country, so it is very easy to have low seed setting rate, resulting in reduced yield or even no yield. According to statistics, about 25% of the soil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00A01C21/00
Inventor 高义武高志光吴晓清
Owner 菏泽金正大生态工程有限公司