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Composition with functions of resistance and control of nitrogen and phosphorus loss of protected horticultural vegetable fields and improvement of soil fertility

A composition and technology for vegetable fields, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve problems such as reducing nitrogen loss, and achieve the effects of increasing nitrogen and phosphorus utilization, improving soil physical structure, and improving nutrient utilization.

Inactive Publication Date: 2018-01-26
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patented product has the effect of reducing nitrogen loss, but this product belongs to the field of fertilizer products

Method used

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  • Composition with functions of resistance and control of nitrogen and phosphorus loss of protected horticultural vegetable fields and improvement of soil fertility
  • Composition with functions of resistance and control of nitrogen and phosphorus loss of protected horticultural vegetable fields and improvement of soil fertility
  • Composition with functions of resistance and control of nitrogen and phosphorus loss of protected horticultural vegetable fields and improvement of soil fertility

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Experimental program
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Effect test

Embodiment

[0042] The amount of each component in the composition of the embodiment is shown in Table 1 below, in parts by weight,

[0043] Each component consumption (weight part) in the embodiment of table 1

[0044]

[0045] The preparation method comprises the following steps: (1) weighing the modified straw powder, biochar, shell powder, bentonite, chitosan oligosaccharide, and edible fungus residue according to the above parts by weight; (2) using a dry powder mixer to mix the raw materials evenly, stirring for (3) Extrusion granulation, granulation conditions: the preheating time of raw materials is 30min, the temperature is 50-60°C, the flow rate is 500kg / h; the particles are columnar, the particle size is 3-5mm, and the length is 15- 20mm.

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Abstract

The invention provides a composition with functions of resistance and control of a nitrogen and phosphorus loss of protected horticultural vegetable fields and improvement of soil fertility. The composition comprises 30 to 50 parts of modified straw powder, 20 to 30 parts of biocoke, 15 to 25 parts of shell powder, 10 to 15 parts of bentonite, 5 to 10 parts of chitooligosaccharides and 10 to 15 parts of edible mushroom residues. Through use of strong adsorption of modified straw powder, chemical fixing action of shell powder to phosphorus, fixing action of bentonite to ammonium nitrogen, and denitrification transformation and microbial conversion of nitrate nitrogen based on denitrification bacteria in soil at a high carbon-nitrogen ratio, nitrogen and phosphorus effective use is improvedand the nitrogen and phosphorus loss can be effectively inhibited and controlled under synergism. The composition improves physico-chemical properties of soil and soil fertility, activates soil microbial activity, improves nitrogen and phosphorus availability of soil, reduces fertilizer application and saves a cost.

Description

technical field [0001] The invention relates to a composition capable of controlling nitrogen and phosphorus loss in protected vegetable fields and improving soil fertility, and belongs to the technical field of agricultural non-point source pollution prevention and control. Background technique [0002] In the past 40 years, due to the influence of human factors, the concentration of nitrate in shallow groundwater has shown a continuous increase trend, and the problem of groundwater pollution has attracted special attention in many countries. The vegetable planting area of ​​intensive facilities is the main area of ​​groundwater nitrate pollution. In order to increase the yield of vegetable crops, the vegetable farmers' management method of "fat and water intensive" has seriously led to the accumulation of soil nutrients and the deterioration of the groundwater environment. The average amount of nitrogen applied to greenhouse vegetables is 1382kg N hm -2 , about 6 to 7 ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 孙翠平李彦徐刚薄录吉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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