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Preparation method of alginic acid synergistic carrier for ammonium phosphate suitable for acid soil

A technology of acidic soil and alginic acid, applied in ammonium orthophosphate fertilizer, application, phosphate fertilizer, etc., can solve the problems of alginic acid synergistic carrier for ammonium phosphate, etc.

Inactive Publication Date: 2019-01-25
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no patent applications and related materials related to the alginic acid synergistic carrier for ammonium phosphate suitable for acidic soils.

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  • Preparation method of alginic acid synergistic carrier for ammonium phosphate suitable for acid soil
  • Preparation method of alginic acid synergistic carrier for ammonium phosphate suitable for acid soil

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Embodiment 1

[0076] Example 1: Preparation of alginic acid synergistic carrier suitable for ammonium phosphate in acidic soil

[0077] The implementation steps of this embodiment are as follows:

[0078] A, preparation of alginic acid organic extractant

[0079] Add 30 parts by weight of monoethanolamine, 8 parts by weight of potassium citrate, 8 parts by weight of potassium salicylate and 8 parts by weight of ethylene glycol to 2000 parts by weight of water at a temperature of 60°C, stir and dissolve at a speed of 60 rpm to obtain The solution is cooled to a temperature below 40°C to obtain the alginic acid organic extractant;

[0080] B. Preparation of alginic acid extract

[0081] Add 100 parts by weight of kelp powder with a particle size of less than 2 mm to 800 parts by weight of the alginic acid organic extractant obtained in step A, then gradually raise its temperature to 80° C. under stirring, and keep it at this temperature for 8 hours, Then cooled to room temperature, centrif...

Embodiment 2

[0084] Embodiment 2: Preparation of alginic acid synergistic carrier suitable for ammonium phosphate in acidic soil

[0085] The implementation steps of this embodiment are as follows:

[0086] A, preparation of alginic acid organic extractant

[0087] Add 20 parts by weight of diethanolamine, 5 parts by weight of potassium citrate, 5 parts by weight of potassium salicylate and 5 parts by weight of ethylene glycol to 1400 parts by weight of water at a temperature of 64°C, stir and dissolve at a speed of 120 rpm to obtain The solution is cooled to a temperature below 40°C to obtain the alginic acid organic extractant;

[0088] B. Preparation of alginic acid extract

[0089]Add 100 parts by weight of kelp brown algae powder raw material with a particle size of less than 2 mm to 1000 parts by weight of the alginic acid organic extractant obtained in step A, then gradually raise its temperature to 90° C. under stirring, and keep it at this temperature for 6 hours, Then cooled t...

Embodiment 3

[0092] Example 3: Preparation of alginic acid synergistic carrier suitable for ammonium phosphate in acidic soil

[0093] The implementation steps of this embodiment are as follows:

[0094] A, preparation of alginic acid organic extractant

[0095] Add 40 parts by weight of triethanolamine, 10 parts by weight of potassium citrate, 10 parts by weight of potassium salicylate and 10 parts by weight of ethylene glycol to 1000 parts by weight of water at a temperature of 67°C, stir and dissolve at a speed of 180 rpm to obtain The solution is cooled to a temperature below 40°C to obtain the alginic acid organic extractant;

[0096] B. Preparation of alginic acid extract

[0097] Add 100 parts by weight of Ascophyllum nodosum powder raw material with a particle size of less than 2mm to 1500 parts by weight of the alginic acid organic extractant obtained in step A, then gradually raise its temperature to 70°C under stirring, and keep it at this temperature for 12h , then cooled to...

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Abstract

The invention relates to a preparation method of an alginic acid synergistic carrier for ammonium phosphate suitable for acid soil. The preparation method comprises the steps of preparation of an alginic acid organic extractant, preparation of an alginic acid extracting solution, preparation of the alginic acid synergistic carrier and the like. After the alginic acid synergistic carrier is combined with the ammonium phosphate, the fixation of the ammonium phosphate in the acid soil is significantly retarded by affecting the pH value of fertisphere, thereby improving the effectiveness of phosphorus. The pH value of soil with the fertisphere less than 1cm is reduced by 0.3-1.2 unit, compared with commercially available ammonium phosphate, the available phosphorus content of soil with 2cm offertisphere is improved by 57.3%, and the weight and activity of rice root systems are both improved by 20% or above. Compared with the commercially available ammonium phosphate, the corn yield of alginic acid ammonium phosphate A, B and C is averagely improved by 9.2%, and the utilization ratio of a phosphatic fertilizer is improved by 7.3%.

Description

【Technical field】 [0001] The invention belongs to the technical field of fertilizer production. More specifically, the invention relates to a method for preparing an alginic acid synergistic carrier suitable for acidic soil. 【Background technique】 [0002] my country's phosphorus resource reserves only account for 5.5% of the world's total reserves, and the per capita resource amount is only 39% of the world's average level. Ammonium phosphate is the most important phosphate fertilizer in my country, but because it is easily fixed by calcium, magnesium, iron, aluminum and other metal ions after entering the soil, the utilization rate in the current season is only about 20%, causing huge economic losses and waste of resources. Only when the soil pH is 6-7, the concentration of available phosphorus is the highest. The pH of acidic soil is generally below 5.5, and the content of iron and aluminum ions is high. After phosphorus enters the soil, on the one hand, it is easily fi...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/08C08B37/04C05G3/90
CPCC05B7/00C05G3/00C08B37/0084C05G3/90
Inventor 袁亮赵秉强李燕婷林治安张水勤王薇
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI