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A kind of chelate fertilizer and preparation method thereof

A chelate and trace element technology, applied in the agricultural field, can solve problems such as unsatisfactory chelate fertilizer, and achieve the effects of simple and controllable preparation method, balanced nutrient supply, stable and lasting release

Active Publication Date: 2018-07-31
SHENYANG RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention aims to overcome the unsatisfactory technical problems of chelated fertilizers in the prior art in actual use, and provides a more ideal chelated fertilizer that can solve the problem of seedling burning, release stable and long-lasting trace elements, increase efficiency and increase production and its preparation method

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  • A kind of chelate fertilizer and preparation method thereof
  • A kind of chelate fertilizer and preparation method thereof
  • A kind of chelate fertilizer and preparation method thereof

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preparation example Construction

[0028] The present invention also provides the preparation method of the above-mentioned chelated fertilizer at the same time, which comprises mixing the trace element chelate of diethylenetriaminepentamethylenephosphonic acid and the trace element chelate of iminodisuccinic acid, and the mixing method is not limited in the present invention , various mixing methods can be used.

[0029] Specifically, in some embodiments, the preparation method of the trace element chelate of diethylenetriaminepentamethylenephosphonic acid can be as follows: contacting diethylenetriaminepentamethylenephosphonic acid with an alkali until the pH value is 6-7, Then contact with trace element inorganic salt to prepare trace element chelate of diethylene triamine pentamethylene phosphonic acid.

[0030] In some embodiments, preferably, the base is potassium hydroxide. The metal element chelate fertilizer containing three nutritional elements N, P and K can be prepared with more comprehensive nutri...

Embodiment 1

[0043] (1) Preparation of DETPMP trace element chelate:

[0044] Weigh 160g DETPMP (50wt%) and add it to the reaction flask, add 208g water, stir evenly, neutralize the reaction with 225g of 50wt% potassium hydroxide aqueous solution, adjust the pH value of the solution to 6-7, heat up to 50°C, slowly Add dropwise the zinc sulfate heptahydrate aqueous solution of 50wt%, observe the reaction situation of the solution, when the solution becomes turbid, and when a white precipitate is generated, stop dripping the zinc sulfate solution, record the quality of the zinc sulfate aqueous solution added as 200g, insulate and stir the reaction for 30min, The DETPMP chelated zinc is prepared, and the effective chelated zinc content is 12.5 wt%.

[0045] (2) Preparation of IDHA trace element chelate:

[0046] In the reaction kettle, slowly add 54.4 g of IDHA sodium into 28.7 g of 50 wt % zinc sulfate heptahydrate aqueous solution, after completely dissolving, adjust the pH value to 5.0-5....

Embodiment 2

[0051] Adopt the method identical with embodiment 1 to prepare chelate fertilizer, difference is (2) prepare IDHA trace element chelate compound, adopt respectively 15.1g 20wt% manganese sulfate inorganic salt aqueous solution and 16.0g 20wt% copper sulfate in two reactors Inorganic salt solution, IDHA chelate manganese and IDHA chelate copper are prepared respectively, IDHA chelate manganese, IDHA chelate copper and DETPMP chelate zinc are mixed in a mass ratio of 1:1:1. Finally, a multi-trace element amino acid chelate fertilizer with a total zinc content of 0.1 wt%, a total manganese content of 0.1 wt% and a total copper content of 0.1 wt% is obtained.

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Abstract

The invention relates to the field of agriculture, in particular to a chelate fertilizer and a preparation method thereof. The chelated fertilizer provided by the invention comprises diethylenetriaminepentamethylene phosphonic acid trace element chelate and iminodisuccinic acid trace element chelate, which can realize sufficient chelation of free trace metal elements and solve the problem of The problem of burning seedlings caused by the rapid release of nutrients in chelated fertilizers, the two cooperate with each other to achieve stable and long-lasting release of trace elements, more balanced nutrient supply, and increased efficiency and production.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a chelate fertilizer and a preparation method thereof. Background technique [0002] With the increase of agricultural output, the application of chemical fertilizers has been increasing. For a long time, there has been a common phenomenon in my country that attaches great importance to macronutrients and despises microelements, which leads to the low content of microelements in the soil, which cannot meet the needs of crop growth, and also affects the absorption efficiency of macronutrient fertilizers. In recent years, trace element fertilizers have received special attention, and how to promote the absorption of trace elements by crops has become an important issue in the fertilizer industry. Several main metal trace elements, such as zinc, manganese, iron, copper, etc., in the soil with a pH value greater than 6, the ionic state is easy to form insoluble hydroxide precipitates and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 李旭王洪庆龙惊惊王远沈丽红
Owner SHENYANG RES INST OF CHEM IND
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