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Compound fertilizer for greenhouse crops and preparation method thereof

A compound fertilizer and crop technology, applied in the direction of fertilizer mixture, application, fertilization device, etc., can solve the problems of stiff seedlings and fruit, stagnant fruit development, high cost, etc., to solve the problem of stiff seedlings and fruit, and reduce negative The effect of influencing and improving the utilization rate

Inactive Publication Date: 2012-03-14
NINGXIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These characteristics lead to slow fertilization and low fertilizer utilization efficiency in the low temperature season according to conventional methods
In the solar greenhouse in winter, various conventional fast-acting full water-soluble fertilizers are applied, but the fertilizer effect is not satisfactory, and the cost is high; when there are more than 10 days of cloudy or snowy days, the vegetables and other crops planted in the greenhouse often suffer from vegetative growth stagnation and fruit failure. The phenomenon of growth stagnation is the so-called stiff seedling phenomenon and stiff fruit phenomenon. At this time, the application of conventional quick-acting full water-soluble fertilizers cannot solve the problem of stiff seedlings and stiff fruit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1. produce 5000kg compound fertilizer (packing is 2500 parts), formula and preparation method are as follows: 2000kg 95% sulfuric acid is added in the reaction tank, pour into 250kg diammonium phosphate, stir, after treating that diammonium phosphate dissolves completely, add 2750kg of urea, stirred until the reaction is completed, and after cooling, it is viscous liquid to paste, stirred until the reaction is completed, called compound fertilizer component A1.

[0022] From mid-October to mid-November in 2007, due to cloudy and rainy days for more than 20 days in the early stage, diseases were prevalent and yields decreased in solar greenhouses around Yinchuan, Ningxia. Before the rainy day (October 5th), the compound fertilizer of the tomato application embodiment 1 formula that has 2 greenhouses, the flush fertilizer (as contrast) that the tomato of 10 greenhouses is used around 10 greenhouses is arranged, and greenhouse area is 400 square rice. In the cl...

Embodiment 2

[0023] Embodiment 2: compound fertilizer is produced, and 100kg water is injected reaction tank, then 400kg contains P 2 o 5 30% phosphoric acid is injected into the reaction tank, and then 2000kg95% sulfuric acid is injected into the reaction tank, 2500kg of urea is added, stirred until the reaction is completed, and 7500kg of water is added (2500 parts in subpackage). The reaction product is still liquid below -10°C. It is called compound fertilizer component C4.

[0024] From mid-October to mid-November in 2007, due to 20 days of cloudy and rainy days in the early stage, diseases were prevalent and yields decreased in solar greenhouses around Yinchuan, Ningxia. On October 20th, in the test carried out in 2 solar greenhouses for planting tomatoes, the area of ​​the greenhouse was 400 square meters, half of the shed was applied with conventional type of flushing fertilizer (as a control), and the other half of the shed was only used with the formula of Example 2 of the pres...

Embodiment 3

[0025] Embodiment 3. compound fertilizer production, calculate with 2500 parts, inject 250kg85% phosphoric acid into reaction tank, then inject 2000kg95% sulfuric acid in reaction tank, add 2500kg urea, stir until reaction finishes, add 7500kg water. The reaction product is still liquid below -10°C. It is called compound fertilizer component C5.

[0026] In November 2007, in Wuzhong City, Ningxia, tomato seedlings stiffened in a seedling center due to cloudy weather and low temperature, which caused the seedlings to fail to emerge from the nursery in time and delayed the timely planting of farmers. Apply the fertilizer of the formula of the present invention Invention Example 3 formula to spray on the seedlings, the concentration is 3000 liters of water for each part, and the problem of stiff seedlings is solved after 5 days.

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Abstract

The invention relates to the field of compound fertilizers in agricultural production, in particular to a compound fertilizer for greenhouse crops. The compound fertilizer consists of the following components in mole part: 1 mole of sulfuric acid, 0.01 to 1 mole of phosphate fertilizer, 1 to 10 moles of urea and 1 to 20 moles of water, and the sulfuric acid chemically reacts with the phosphate fertilizer, the urea and the water, so that the compound fertilizer with urea sulfate and urea phosphate as main components is synthesized. The invention can solve the problem of underdeveloped seedlings and underdeveloped fruits of vegetables and other crops in winter sunlight greenhouses.

Description

technical field [0001] The invention relates to the field of mixed fertilizers in agricultural production, in particular to a compound fertilizer for greenhouse crops and a preparation method thereof. Background technique [0002] Among the existing chemical fertilizers of most varieties, in agricultural production, the most prominent problems are low fertilizer utilization rate and slow fertilizer efficiency. The general situation of fertilizer utilization rate in that year is: the utilization rate of ammonium bicarbonate is 20%, urea is 40%, diammonium phosphate 10%, monoammonium phosphate 15%, potassium chloride 40%, and the utilization rate in the current season is lower. The speed of fertilizer effect is also different. Among nitrogen fertilizer varieties, nitrate nitrogen fertilizer has the fastest fertilizer effect, followed by ammonium bicarbonate, ammonium chloride, and ammonium sulfate, and urea is the slowest; after fertilization, the soil temperature has a great ...

Claims

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Application Information

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IPC IPC(8): C05G1/00
Inventor 平吉成
Owner NINGXIA UNIVERSITY
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