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Water-retaining slow-release fertilizer for saline-alkali soil improvement and preparation method thereof

A technology for saline-alkali land and slow-release fertilizer, which is applied to the field of water-retaining slow-release fertilizer for improving saline-alkali land and its preparation, can solve the problem that the soil pH and soil alkalinity cannot be effectively reduced at the same time, and the water retention, water holding and water-holding capacity of the soil cannot be effectively improved. , the ability and effect of reducing soil salinity, to achieve good nutrient release regulation function, reduce secondary damage, and achieve obvious effects of fertilizer conservation

Inactive Publication Date: 2016-11-23
SHANDONG SUNWAY LANDSCAPE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Applying soil improvement fertilizer to saline-alkali land is a means of improving saline-alkali land, but the application of existing soil improvement fertilizers often easily causes the defects of strong fertilizer efficiency in the early stage of application and weakened effect in the later stage. In addition, the existing soil improvement fertilizers also have the following deficiencies: (1) The ability and effect of reducing soil salinity are limited; (2) It cannot effectively reduce soil pH and soil alkalization at the same time; (3) It cannot effectively improve the water retention, water holding capacity, and water content of soil; (4) Soil poor air permeability

Method used

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  • Water-retaining slow-release fertilizer for saline-alkali soil improvement and preparation method thereof

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Effect test

Embodiment 1

[0035] The water-retaining slow-release fertilizer for saline-alkali land improvement of the present invention includes the following raw materials in proportion by weight: 15 parts of maleic anhydride, 6 parts of phosphogypsum, 0.1 part of EDTA, 12 parts of biochemical fulvic acid, 15 parts of potassium humate, livestock and poultry 35 parts of fermented organic fertilizer, 8 parts of wood vinegar, 5 parts of peat, 4 parts of potassium feldspar, 5 parts of vermiculite, 80 parts of long-acting compound fertilizer and 1 part of water retaining agent;

[0036] Among them, the long-acting compound fertilizer includes 0.5 parts of γ-polyglutamic acid, 0.5 parts of urease inhibitor, 0.5 part of nitrification inhibitor and 78.5 parts of compound fertilizer;

[0037] The compound fertilizer used includes nitrogen, phosphorus pentoxide, potassium oxide, and a mixture of medium and trace elements. The content of each component is 35-45 parts of urea with a nitrogen content of 46%, 49% o...

Embodiment 2

[0050] The water-retaining slow-release fertilizer for saline-alkali land improvement of the present invention includes the following raw materials in proportion by weight: 20 parts of maleic anhydride, 10 parts of phosphogypsum, 2 parts of EDTA, 15 parts of biochemical fulvic acid, 25 parts of potassium humate, organic fermented organic fertilizer for livestock and poultry 40 parts of fertilizer, 12 parts of wood vinegar, 10 parts of peat, 6 parts of potassium feldspar, 8 parts of vermiculite, 120 parts of long-acting compound fertilizer and 5 parts of water retaining agent;

[0051] Among them, the long-acting compound fertilizer used includes 2 parts of γ-polyglutamic acid, 1.5 parts of urease inhibitor, 0.5 part of nitrification inhibitor and 116 parts of compound fertilizer;

[0052] The compound fertilizer used includes nitrogen, phosphorus pentoxide, potassium oxide, and a mixture of medium and trace elements. The content of each component is 35-45 parts of urea with a n...

Embodiment 3

[0059] The water-retaining slow-release fertilizer for saline-alkali land improvement of the present invention includes the following raw materials in proportion by weight: 18 parts of maleic anhydride, 8 parts of phosphogypsum, 1 part of EDTA, 13 parts of biochemical fulvic acid, 18 parts of potassium humate, organic 38 parts of fertilizer, 10 parts of wood vinegar, 8 parts of peat, 5 parts of potassium feldspar, 6 parts of vermiculite, 100 parts of long-acting compound fertilizer and 3 parts of water retaining agent;

[0060] The long-acting compound fertilizer includes 1.5 parts of γ-polyglutamic acid, 1 part of urease inhibitor, 0.5 part of nitrification inhibitor and 97 parts of compound fertilizer;

[0061] The compound fertilizer used includes nitrogen, phosphorus pentoxide, potassium oxide, and a mixture of medium and trace elements. The content of each component is 35-45 parts of urea with a nitrogen content of 46%, 49% of phosphorus pentoxide and nitrogen 10-22 parts...

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Abstract

The invention discloses water-retaining slow-release fertilizer for saline-alkali soil improvement and a preparation method thereof. The preparation method comprises the following steps: mixing and stirring 0.5-1.5 parts of a urease inhibitor and 0.2-0.6 part of a nitrification inhibitor with 0.5-2 parts of gamma-polyglutamic acid, uniformly mixing with 79-116 parts of molten compound fertilizer, cooling, drying and granulating to obtain long-lasting compound fertilizer; uniformly mixing 4-6 parts of potassium feldspar, 5-8 parts of vermiculite, 5-10 parts of peat, 15-20 parts of maleic anhydride, 6-10 parts of phosphogypsum, 0.1-2 parts of EDTA, 12-15 parts of biochemical fulvic acid, 15-25 parts of potassium humate, 35-40 parts of livestock and poultry fermented organic fertilizer, 80-120 parts of the long-lasting compound fertilizer and 1-5 parts of a water-retaining agent to obtain the water-retaining slow-release fertilizer. The water-retaining slow-release fertilizer can effectively reduce the salinity and the alkality of saline-alkali soil, can improve the fertilizer utilization ratio, can reduce environment pollution caused by application of a large amount of chemical fertilizer, and has the advantages of long-lasting fertilizer efficiency and environment friendliness of raw materials.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali land improvement, and in particular relates to a water-retaining slow-release fertilizer for saline-alkali land improvement and a preparation method thereof. Background technique [0002] Saline-alkali land is a general term for saline soil, alkaline soil and various salinized and alkalized soils. Saline soil refers to the soil in which the soluble salt content in the soil reaches a certain level, which can cause obvious harm to the growth and development of plants. Alkaline soil refers to the soil that contains a large amount of exchangeable ions in the soil, and the amount reaches the level that can harm the growth and development of plants and change the soil properties. Saline-alkali land is an important land resource, and it is a soil type widely distributed on the earth. The prevention and development of saline-alkali land is an issue that cannot be ignored in the agricultural develo...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05G3/04C05G3/00C05G3/80C05G3/90
CPCC05B7/00C05D1/02C05G1/00C05G3/00C05G3/80C05G3/90C05C3/00C05C9/00C05D5/00C05D9/00C05D9/02C05D3/02C05F9/04C05F11/02Y02P60/21
Inventor 王胜
Owner SHANDONG SUNWAY LANDSCAPE TECH
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