Liquid chelated calcium as well as preparation method and use thereof

A technology of liquid chelation and chelation reaction, which is applied in the field of chemical fertilizers in agricultural science and technology, can solve the problems of poor plant growth, high price, loss of mobility, etc., and achieves convenient water use and metering, good crop absorption and stability good sex effect

Inactive Publication Date: 2014-03-12
CHENGDU NEWSUN CROPSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, EDTA-Ca and calcium citrate are not only expensive, but EDTA has adverse effects on plant growth, and calcium citrate has the disadvantage of poor water solubility.
Although amino acid calcium will not have adverse ef

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of liquid chelated calcium of the present invention is to chelate calcium nitrate, polyhydroxy compound and water at 80-120 ℃ for 1-5 hours, cool to make liquid chelated calcium; wherein, calcium nitrate 45-70 weight part, 10-25 parts by weight of a polyhydroxy compound, and the polyhydroxy compound is ethylene glycol, glycerol, mannitol, xylitol or sorbitol. If a surfactant needs to be added, it can be added directly after cooling, and the liquid chelated calcium can be obtained by stirring evenly.

[0026] In order to improve the chelation efficiency, it is preferable to chelate calcium nitrate, polyols and water at 90-98°C for 2 hours; if a surfactant is needed, add it directly after cooling, and stir evenly to obtain a liquid chelate Calcium.

[0027] Another preparation method of liquid chelated calcium of the present invention is to chelate calcium nitrate, glucose and water at 80-85 ° C for 1-5 hours, and cool to make liquid chelated calci...

Embodiment 1

[0033] Take 50g of calcium nitrate, 12g of glucose, and 20g of tap water and pump them into the stirring reactor, then seal the reactor well, turn on the condensing and reflux device, start stirring, and at the same time turn on the steam to heat up the temperature, start timing when the temperature rises to 80°C, and adjust the amount of steam Control the temperature between 80-85°C, and perform the chelation reaction for 3 hours; after the chelation reaction is completed, pass cooling water to lower the temperature in the kettle to below 40°C, add 5g Tween 80, 13g tap water, stir evenly, and let stand After filtering and discharging, liquid chelated calcium 1 is obtained.

Embodiment 2

[0035] Take 45g of calcium nitrate, 25g of mannitol, and 30g of double distilled water and pump them into the stirring reactor, then seal the reactor well, turn on the condensing reflux device, start stirring, and at the same time turn on the steam to heat up, and start timing when the temperature rises to 80°C, and Adjust the amount of steam so that the temperature is controlled between 80-90°C, and perform the chelation reaction for 5 hours; after the chelation reaction is completed, pass cooling water to reduce the temperature in the kettle to below 40°C, and filter and discharge the material after standing still to obtain liquid chelation Calcium2.

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Abstract

The invention relates to liquid chelated calcium as well as a preparation method and use thereof and belongs to the chemical fertilizer filed in agricultural science and farming techniques. The invention provides the liquid chelated calcium and the preparation method thereof. Active ingredients of the liquid chelated calcium disclosed by the invention are prepared by chelating 45-70 parts by weight of calcium nitrate and 10-25 parts by weight of polyhydroxy compounds in water, wherein the polyhydroxy compounds are ethylene glycol, glycerol, mannitol, xylitol, sorbitol or glucose. The liquid chelated calcium disclosed by the invention is high in calcium content which is greater than 120 g/L, safe and non-toxic, free from harmful effect on crops, can be mixed with other pesticides, weakly-acidic and neutral fertilizers for use, good in water solubility for being conveniently mixed with water for using and metering, good in stability, and can be stored by resisting a low temperature; besides, the liquid chelated calcium is produced by adopting a chelating process, so that crops can be absorbed better and quicker.

Description

technical field [0001] The invention relates to liquid chelated calcium and its preparation method and application, belonging to the chemical fertilizer field in agricultural science and technology. Background technique [0002] Calcium has various functions such as maintaining the stability of cell walls, protecting cell membranes, and regulating ion balance. At the same time, calcium is also an activator of various enzyme reactions, which is extremely important to crops. Calcium deficiency in crops can easily lead to a variety of physiological diseases, such as tomato navel rot, apple bitter pit, citrus sunburn, cabbage dry heartburn, etc. Therefore, calcium supplementation of crops is very necessary. At present, the traditional method of calcium supplementation is to spray traditional calcium fertilizers (such as calcium nitrate) on the leaves. This method has a certain effect of calcium supplementation. , Inorganic acid radicals (such as phosphate radicals, sulfate rad...

Claims

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Application Information

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IPC IPC(8): C07F3/04C05D3/00
Inventor 何其明刘文涛李隆权文彦任丹
Owner CHENGDU NEWSUN CROPSCI
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