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Acid-proof, moisture-holding and superactive special fertilizer technology for forestry and additive

A chemical fertilizer and forestry technology, which is applied in the fields of acid-resistant and water-retaining forestry special fertilizers and additives, can solve the problems of slow-release fertilizers not taking into account the soil moisture content, nutrient loss improvement, etc., to enhance the soil's ability to retain water and fertilizer, and reduce fertilizer nutrient loss , which is conducive to the effect of large-scale use

Inactive Publication Date: 2014-11-05
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing slow-release fertilizers do not take into account the improvement of environmental problems such as soil moisture, nutrient loss, and soil acidification, and cannot meet the needs of contemporary forestry development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) By weight, 20 parts of attapulgite (100 mesh, colloidal grade), 10 parts of power plant straw ash (mass ratio of silicon to carbon is 1:1), 1 part of sodium hexametaphosphate and 1 part of cysteine Amino acid was added to tap water to make a suspension with a concentration of 60g / L, and stirred at 100rpm for 30 minutes at 30°C;

[0026] (2) Take 1L of the suspension prepared in step (1), add 2g of acrylamide, 0.1g of N,N'-methylenebisacrylamide and 0.1g of hydrogen peroxide, stir at 100rpm at 30°C, and simultaneously use gamma Radiation (5MeV, 20kGy) was irradiated for 10 minutes, then dried to constant weight at 40°C, crushed, and passed through a 100-mesh sieve;

[0027] (3) Take 10 parts of powder prepared in step (2) and mix with 1 part of ammonium polyacrylate (200 mesh), which is a forestry special powerful chemical fertilizer additive with water retention, fertilizer retention and acid soil improvement;

[0028] (4) Mix 1 part of additive with 3 parts of ure...

Embodiment 2

[0030] (1) By weight, 25 parts of attapulgite (300 mesh, colloidal grade), 15 parts of power plant straw ash (silicon-carbon ratio of 1:1), 1 part of sodium hexametaphosphate and 2 parts of cysteine The acid was added to tap water to make a suspension with a concentration of 80g / L, and stirred at 100rpm for 40 minutes at 35°C;

[0031](2) Take 1L of the suspension prepared in step (1), add 3g of acrylamide, 0.2g of N,N'-methylenebisacrylamide and 0.2g of hydrogen peroxide, stir at 100rpm at 25°C, and simultaneously use gamma Radiation (3MeV, 5kGy) was irradiated for 30 minutes, then dried to constant weight at 50°C, crushed, and passed through a 100-mesh sieve;

[0032] (3) Take 12 parts of the powder prepared in step (2) and mix with 2 parts of ammonium polyacrylate (200 mesh), which is a special powerful chemical fertilizer additive for forestry with water retention, fertilizer retention and acid soil improvement;

[0033] (4) Mix 1 part of additive and 9 parts of urea even...

Embodiment 3

[0035] (1) By weight, 25 parts of attapulgite (800 mesh, colloidal grade), 12 parts of power plant straw ash (silicon-carbon ratio of 1:2), 2 parts of sodium hexametaphosphate and 2 parts of cysteine The acid was added to tap water to make a suspension with a concentration of 100g / L, and stirred at 200rpm for 20 minutes at 40°C;

[0036] (2) Take 1 L of the suspension in step (1), add 4 g of acrylamide, 0.2 g of N, N'-methylenebisacrylamide and 0.2 g of hydrogen peroxide, stir at 200 rpm at 35 ° C, and simultaneously use gamma rays ( 1MeV, 50kGy) irradiated for 5 minutes, then dried to constant weight at 60°C, crushed, and passed through a 100-mesh sieve;

[0037] (3) Mix 15 parts of the powder of step (2) with 2 parts of ammonium polyacrylate (200 mesh), which is a forestry special powerful chemical fertilizer additive with water retention, fertilizer retention and acid soil improvement; (4) mix 0.5 1 part additive and 9.5 parts urea are evenly mixed, and extruded and granul...

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Abstract

The invention discloses an acid-proof, moisture-holding and superactive special fertilizer technology for forestry and an additive. The technology comprises the steps of mixing and adding attapulgite, straw ash of power plants, sodium hexametaphosphate and aminothiopropionic acid into tap water so as to prepare turbid liquid, adding acrylamide, N,N'-methylene bisacrylamide and hydrogen peroxide into the turbid liquid, carrying out gamma ray irradiation on the obtained mixture, drying the obtained product until the weight of the obtained product is constant, crushing and sieving the obtained product, mixing the obtained powder with ammonium polyacrylate so as to obtain a special fertilizer additive for forestry, adding the additive into a common fertilizer, and granulating the obtained mixture so as to obtain a special fertilizer for forestry. The fertilizer has the advantages of water holding, fertilizer maintenance and capability of improving the acidic soil; meanwhile, through taking straw ash of power plants as a raw material, the straw ash of power plants is changed into things of value, thereby saving the cost, and further facilitating the large-scale application of the technology and the additive in forestry.

Description

technical field [0001] The present invention relates to a kind of special fertilizer technology and auxiliary agent suitable for acidic soil, water retention and powerful forestry, especially relates to a special chemical fertilizer and auxiliary agent for acid resistance and water retention forestry. Background technique [0002] The results of the seventh national forest resources inventory (2004-2008) show that the national forest area is 195.4522 million hectares, the total stock of living trees is 14.913 billion cubic meters, the forest stock is 13.721 billion cubic meters, and the forest coverage rate is 20.36%, compared with 8.6 in 1949. % net increase of 11.76 percentage points. my country's forest area ranks fifth in the world after Russia, Brazil, Canada, and the United States; its forest stock ranks sixth in the world after Brazil, Russia, the United States, Canada, and the Democratic Republic of the Congo. my country's planted forest area is 61.6884 million hect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 蔡冬清吴正岩余增亮吴丽芳张桂龙
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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