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Farmland nitrogen and phosphorus emission combined resistance control method

A technology of resistance control and farmland, applied in the direction of soil preparation, agriculture, fertilizer mixture, etc., can solve the problems of pollution, groundwater nitrate pollution, etc., achieve the effect of material economy, increase utilization rate, and increase carbon-nitrogen ratio

Inactive Publication Date: 2020-07-17
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of nitrogen and phosphorus input by vegetable growers far exceeds the actual demand of crops by several times, and a large amount of nitrogen and phosphorus that are not absorbed by crops accumulates in the soil, which greatly increases the risk of groundwater leaching and nitrate pollution of groundwater, bringing serious pollution problem

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  • Farmland nitrogen and phosphorus emission combined resistance control method
  • Farmland nitrogen and phosphorus emission combined resistance control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for joint prevention and control of nitrogen and phosphorus discharge in farmland, comprising the following steps:

[0047] a In the lower layer of the crop root system, set up a barrier system for the farmland leaching layer, dig the farmland soil of the facility to a depth of 50 cm in the risk layer of leaching loss, lay a barrier layer composite material with a thickness of 6 cm, and compact it. Backfill to the root distribution layer of the crop.

[0048] The composition of the barrier layer composite material is as follows in parts by weight: 25 parts of straw-based hydrogel, 20 parts of edible fungus residue, 35 parts of bentonite, and 5 parts of corn flour.

[0049] b In the distribution layer of the crop root system, according to the ratio of 1:1:1, add the composite microbial agent composed of Bacillus fermentum, Bacillus subtilis, and Bacillus amyloliquefaciens, and add 150% edible fungus slag by weight at the same time. 20 parts of straw-made hydrog...

Embodiment 2

[0055] A method for joint prevention and control of nitrogen and phosphorus discharge in farmland, comprising the following steps:

[0056] a In the lower layer of the crop root system, set up a barrier system for the farmland leaching layer, dig the farmland soil of the facility to a depth of 50 cm in the risk layer of leaching loss, lay a barrier layer composite material with a thickness of 6 cm, and compact it. Backfill to the root distribution layer of the crop.

[0057] The composition of the barrier layer composite material is as follows in parts by weight: 30 parts of straw-based hydrogel, 25 parts of edible fungus residue, 40 parts of bentonite, and 5 parts of corn flour.

[0058] b In the distribution layer of the crop root system, according to the ratio of 1:1:1, add the composite microbial agent composed of Bacillus fermentum, Bacillus subtilis, and Bacillus amyloliquefaciens, and add 150% edible fungus slag by weight at the same time. 20 parts of straw-made hydrog...

Embodiment 3

[0064]A method for joint prevention and control of nitrogen and phosphorus discharge in farmland, comprising the following steps:

[0065] a In the lower layer of the crop root system, set up a barrier system for the farmland leaching layer, dig the farmland soil of the facility to a depth of 50 cm in the risk layer of leaching loss, lay a barrier layer composite material with a thickness of 6 cm, and compact it. Backfill to the root distribution layer of the crop.

[0066] The composition of the barrier layer composite material is as follows in parts by weight: 35 parts of straw-based hydrogel, 30 parts of edible fungus residue, 50 parts of bentonite, and 6 parts of corn flour.

[0067] b In the distribution layer of the crop root system, according to the ratio of 1:1:1, add the composite microbial agent composed of Bacillus fermentum, Bacillus subtilis, and Bacillus amyloliquefaciens, and add 150% edible fungus slag by weight at the same time. 20 parts of straw-made hydroge...

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Abstract

The invention provides a farmland nitrogen and phosphorus emission combined resistance control method; a composite organic material and a chemical fertilizer are cooperatively applied to reduce nitrogen and phosphorus investment during crop sowing or field planting, and the composite organic material comprises the following components in parts by weight: 200-250 parts of edible fungus residues, 300-350 parts of charcoal and 5-10 parts of rhamnolipid; the method further includes constructing a nitrogen and phosphorus immobilization layer by utilizing a compound microbial agent and combining 150parts by weight of edible fungus residues and 20 parts by weight of straw-based hydrogel; building a barrier layer by utilizing a composite material, preventing nitrogen and phosphorus which are notabsorbed by crops in soil from being leached downwards, and wherein the used barrier layer composite material comprises the following components in parts by weight: 25-35 parts of straw-based hydrogel, 20-30 parts of edible fungus residues, 35-55 parts of bentonite and 5-10 parts of corn flour. According to the method, the application amount of chemical fertilizer is reduced, the utilization rateof nitrogen, phosphorus and nutrients by crops is increased, immobilization and conversion of nitrogen and phosphorus by soil are improved, and underground water is prevented from being polluted by downward leaching of nitrogen and phosphorus.

Description

technical field [0001] The invention relates to the technical field of agricultural environmental protection, in particular to a method for joint resistance and control of nitrogen and phosphorus discharge from farmland. Background technique [0002] In my country, the non-point source pollution of nitrogen and phosphorus caused by agriculture to the environment significantly exceeds the point source pollution of industry and life. Among them, the ecological environment problems brought about by the production process of facility agriculture are particularly prominent, mainly due to the large increase in the area of ​​facility vegetables in recent years. In order to achieve high yield and high income, some vegetable growers put too much fertilizer and water into the farmland, coupled with unreasonable management methods, resulting in poor soil quality and reduced ability to retain water and fertilizer in protected farmland. The amount of nitrogen and phosphorus input by veget...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/80C05F17/00A01B79/02A01B79/00
CPCC05D9/00C05G3/00C05F17/00A01B79/02A01B79/00Y02W30/40C05G3/80C05F17/20Y02P20/145C05F17/60
Inventor 李彦付龙云柳修楚井永苹薄录吉孙明仲子文
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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