Method for improving available phosphorus content in moisture soil

A technology of effective phosphorus and fluvo-aquic soil, applied in the agricultural field, can solve the problems of poor pertinence of phosphorus increase, low utilization efficiency of phosphorus fertilizer, cumbersome preparation process, etc. Effect

Inactive Publication Date: 2014-03-12
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the utilization efficiency of phosphate fertilizers is very low, generally between 10% and 25%. Especially in areas with abundant fluvo-aquic soil in northern my country, phosphate fertilizers are mainly water-soluble phosphate fertilizers, such as diammonium phosphate. Therefore, it is an important issue in agricultural production to improve the utilization rate of phosphate fertilizer and reduce the loss of phosphate fertilizer
[0006] At present, there are methods for preparing compound fertilizers by using biochar compound probiotics in the technology, such as Chinese patents CN102701834A and CN102649655A, the purpose of which is to improve the overall fertility of the soil, the phosphorus increase is not targeted, and the preparation process is cumbersome
[0007] So far, there has been no report of using biochar and phosphate solubilizing bacteria solution to make phosphate solubilizing bacteria-biochar composition to increase the available phosphorus content in fluvo-aquic soil

Method used

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  • Method for improving available phosphorus content in moisture soil
  • Method for improving available phosphorus content in moisture soil
  • Method for improving available phosphorus content in moisture soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] (1) Preparation of biochar

[0083] The rice straw is sealed and heated, cooled to room temperature, crushed and passed through a 100-mesh sieve to obtain biochar powder;

[0084] (2) Preparation of phosphate solubilizing bacteria solution:

[0085] Inoculate the Bacillus megaterium species into the beef extract-peptone liquid medium, and culture it on a shaking table at 28°C and 180rpm for 5 days to prepare a phosphate-solubilizing bacteria solution, in which the effective number of phosphate-solubilizing bacteria is >1 billion / ml;

[0086] (3) Mix the phosphate solubilizing bacteria liquid prepared in (2) with the biochar powder prepared in (1) at a volume-to-weight ratio of 4:1 (that is, 40ml bacterial liquid: 10g biochar), and stir evenly , to prepare a phosphate solubilizing bacteria-biochar composition; (4) adding the phosphate solubilizing bacteria-biochar composition and the fluvo-aquic soil prepared in (3) in a weight ratio of 2.5:100 to the fluvo-aquic soil...

Embodiment 2

[0092] (1) Preparation of biochar

[0093] The rice straw is sealed and heated, cooled to room temperature, crushed and passed through a 65-mesh sieve to obtain biochar powder;

[0094] (2) Preparation of phosphate solubilizing bacteria solution:

[0095] Inoculate the Bacillus megaterium species into the beef extract-peptone liquid medium, and culture it on a shaking table at 28°C and 180rpm for 5 days to prepare a phosphate-solubilizing bacteria solution, in which the effective number of phosphate-solubilizing bacteria is >1 billion / ml;

[0096] (3) Mix the phosphate solubilizing bacteria liquid prepared in (2) with the biochar powder prepared in (1) at a volume-to-weight ratio of 3:1 (that is, 30ml bacterial liquid: 10g biochar), and stir evenly , making phosphate solubilizing bacteria-biochar composition;

[0097] (4) Add the phosphate solubilizing bacteria-biochar composition prepared in (3) to the fluvo-aquic soil at a weight ratio of 1.5:100, and stir evenly.

[00...

Embodiment 3

[0103] (1) Preparation of biochar

[0104] The rice straw is sealed and heated, cooled to room temperature, crushed and passed through a 5-mesh sieve to obtain biochar powder;

[0105] (2) Preparation of phosphate solubilizing bacteria solution:

[0106] Inoculate the Bacillus megaterium species on the beef extract-peptone liquid medium, shake and culture it on a shaking table at 28°C and 180rpm for 6 days to prepare the phosphate-solubilizing bacteria liquid, in which the effective number of phosphate-solubilizing bacteria is >1.2 billion / ml;

[0107] (3) Mix the phosphate solubilizing bacteria solution prepared in (2) with the biochar powder prepared in (1) at a volume-to-weight ratio of 1:1 (that is, 10ml bacterial solution: 10g biochar), and stir evenly , making phosphate solubilizing bacteria-biochar composition;

[0108] (4) Add the phosphate solubilizing bacteria-biochar composition prepared in (3) to the fluvo-aquic soil at a weight ratio of 2.0:100, and stir evenl...

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Abstract

The invention discloses a method for improving available phosphorus content in moisture soil. The method comprises two steps of preparing a phosphate solubilizing bacteria-charcoal composition and improving moisture soil. The method provided by the invention can obviously improve available phosphorus content in moisture soil, has long-lasting acting effect and is rich in raw material source, low in cost and environmental-friendly.

Description

technical field [0001] The invention relates to the field of agriculture, belongs to the soil improvement and treatment technology in phosphorus-deficient fluvo-aquic soil areas, and particularly relates to a method capable of effectively increasing the available phosphorus content in fluvi-flux soil. Background technique [0002] Fluvo-aquic soil is a type of dry-farmed soil that develops on river alluvial deposits and is affected by groundwater activities. It is one of the main cultivated soil types in my country. River valley plains, with a total area of ​​12.67 million hectares, have low organic matter content, usually less than 1%, and will be affected by floods, floods, droughts, and barrens. Most of them belong to low- and medium-yield fields. Main production areas, the main food crops are corn, wheat, rice, millet and sweet potato, etc., and the main economic crops are peanuts, cotton, sesame, soybeans, etc., of which the output of grain and cotton accounted for 18.4% ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00C09K17/00C09K101/00
Inventor 陈瑞蕊林先贵魏世平王俊华
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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