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Composite material and application of a facility vegetable field blocking nitrogen and phosphorus leaching loss

A technology of composite materials and facilities, applied in the fields of application, ammonium orthophosphate fertilizer, alkaline orthophosphate fertilizer, etc., can solve problems such as less research, achieve the effects of easy availability of raw materials, improvement of resource utilization efficiency, and reduction of environmental pollution

Active Publication Date: 2020-09-25
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Leaching process barrier technology is less studied in soil

Method used

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  • Composite material and application of a facility vegetable field blocking nitrogen and phosphorus leaching loss

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Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1. A barrier composite material for preventing and controlling nitrogen and phosphorus leaching loss, comprising the following components in parts by weight: 20 parts of attapulgite powder, 20 parts of sodium pyrophosphate, 35 parts of activated weathered coal, and edible fungus residue 20 parts, 5 parts of iron powder, 15 parts of struvite, 1 part of sucrose.

[0037] The preparation method is:

[0038] (1) Preparation of activated weathered coal: crush the weathered coal through a 2mm sieve, mix the weathered coal, ammonium bicarbonate and ammonium phosphate in a weight ratio of 100:20:5, adjust the humidity to a water content of 40%, mix well and seal at room temperature , placed for 10 to 24 hours, the activated weathered coal with a humic acid content of 58.6% is obtained;

[0039] (2) Weigh the attapulgite powder, sodium pyrophosphate, activated weathered coal, edible fungus slag, iron powder, struvite, and sucrose according to the above parts by weigh...

Embodiment 2

[0040] Embodiment 2. A barrier composite material for preventing and controlling nitrogen and phosphorus leaching loss, comprising the following components in parts by weight: 25 parts of attapulgite powder, 15 parts of sodium pyrophosphate, 40 parts of activated weathered coal, and edible fungus residue 15 parts, 4 parts of iron powder, 18 parts of struvite, 1.5 parts of sucrose.

[0041] The preparation method is:

[0042] (1) Preparation of activated weathered coal: crush the weathered coal through a 2mm sieve, mix weathered coal, ammonium bicarbonate and ammonium phosphate in a weight ratio of 100:15:4, adjust the humidity to a water content of 45%, mix well and seal at room temperature , placed for 10-24 hours, that is, activated weathered coal with a humic acid content of 64.7%;

[0043] (2) Weigh the attapulgite powder, sodium pyrophosphate, activated weathered coal, edible fungus slag, iron powder, struvite, and sucrose according to the above parts by weight, and stir...

Embodiment 3

[0044] Embodiment 3. A barrier composite material for preventing and controlling nitrogen and phosphorus leaching loss, comprising the following components in parts by weight: 28 parts of attapulgite powder, 10 parts of sodium pyrophosphate, 45 parts of activated weathered coal, and edible fungus residue 10 parts, 2 parts of iron powder, 20 parts of struvite, 2 parts of sucrose.

[0045] The preparation method is:

[0046] (1) Preparation of activated weathered coal: crush the weathered coal through a 2mm sieve, mix weathered coal, ammonium bicarbonate and ammonium phosphate in a weight ratio of 100:10:2, adjust the humidity to a water content of 35%, mix well and seal at room temperature , placed for 10-24 hours, that is, activated weathered coal with a humic acid content of 54.2%;

[0047] (2) Weigh the attapulgite powder, sodium pyrophosphate, activated weathered coal, edible fungus slag, iron powder, struvite, and sucrose according to the above parts by weight, and stir e...

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Abstract

The invention provides a composite material for blocking nitrogen and phosphorus leaching loss in protected horticultural vegetable fields and an application. The composite material comprises, in parts by weight, 20-30 parts of attapulgite powder, 10-20 parts of sodium pyrophosphate, 30-45 parts of activated decomposed coal, 10-25 parts of edible fungus residues, 1-5 parts of iron powder, 10-20 parts of struvite, and 1-3 parts of sucrose. According to the invention, the composite material is used for constructing a nitrogen and phosphorus loss blocking layer in greenhouse vegetable field soil, nitrogen and phosphorus immobilization in root layer soil bodies can be improved and conversion is promoted, the leaching loss of nitrogen and phosphorus toward underground water is reduced, phosphorus element recycling is promoted, safe conversion of a nitrogen element is promoted, so that a nutrient utilization rate is improved, and the nitrogen and phosphorus leaching loss is effectively reduced.

Description

technical field [0001] The invention relates to a composite material for blocking nitrogen and phosphorus leaching loss in a facility vegetable field and its application, and belongs to the technical field of process blocking and interception for blocking nitrogen and phosphorus loss in the prevention and control of agricultural non-point source pollution. [0002] technical background [0003] With the rapid development of agriculture, the demand for vegetables is increasing. In 2015, my country's facility production area was nearly 5.75 million hectares, of which facility vegetable fields accounted for about 93%. In the vegetable management system, vegetable farmers blindly apply excessive fertilizers (especially nitrogen fertilizers) in order to increase the yield of vegetable crops. Coupled with the characteristics of high multiple cropping index of facility vegetables, large-scale application of nitrogen fertilizers causes excessive accumulation of nitrate nitrogen in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/90C05G3/80A01B79/02
CPCA01B79/02C05B7/00C05G3/80C05G3/90C05B17/00C05C3/00C05D5/00C05D9/02C05F5/00C05F11/00C05F11/02
Inventor 李彦孙翠平薄录吉马盼罗加法石宁张英鹏井永苹孙明仲子文
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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