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Preparation method of exogenous easily extractable glomalin soil conditioner and use method thereof

The technology of soil conditioner and glocycin, which is applied in the agricultural field, can solve the problems of single preparation raw material, unstable product quality, effect and performance, affecting soil environment and water environment, etc., so as not to pollute the environment and promote soil nutrients. Recycling and eco-economic benefits have obvious effects

Active Publication Date: 2016-11-30
YANGTZE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But the preparation raw material of existing soil conditioner is very wide, comprises various natural mineral matter, agricultural production waste, industrial production by-product, urban and domestic refuse and organic fertilizer, artificial polymer etc., and the soil conditioner of these preparations exists many The deficiency of: (1) preparation raw material is single, and product quality, effect and performance are unstable; (2) be rich in other poisonous and harmful substances, have seriously affected soil environment and water environment

Method used

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  • Preparation method of exogenous easily extractable glomalin soil conditioner and use method thereof
  • Preparation method of exogenous easily extractable glomalin soil conditioner and use method thereof
  • Preparation method of exogenous easily extractable glomalin soil conditioner and use method thereof

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preparation example Construction

[0015] The preparation method of a kind of exogenous easy-to-extract glomycin soil conditioner of the present invention comprises the following steps:

[0016] 1), the preparation of sodium citrate extraction agent: adopt citric acid solution and disodium hydrogen phosphate solution to mix uniformly with the ratio of 13:87 and obtain sodium citrate extraction agent;

[0017] 2) Preparation of exogenous exogenous exogenous glomycin soil conditioner: add air-dried soil to sodium citrate extraction agent, sterilize, centrifuge and collect supernatant to obtain glomycin solution.

[0018] 3) The solution prepared in step 2) is diluted with sodium citrate buffer solution, which is the exogenous glomycin soil conditioner that is easily extracted.

[0019] Preferably, in step 1), the preparation of the citric acid solution is: take 0.42~4.2g C 6 h 8 o 7 ·H 2 O was dissolved in 100-1000mL distilled water to prepare a 0.02mol / L citric acid solution;

[0020] Preferably, in step 1)...

Embodiment 1

[0031] 1. Preparation of exogenous easy-to-extract glomycin

[0032] The 0-20cm soil (yellow soil) was collected in the citrus orchard of Yangtze University, mixed evenly, air-dried, and passed through a 4mm sieve to remove roots, garbage and stones in the soil. Then extract the exogenous easy-to-extract glomycin according to the following method:

[0033] 1), the preparation of sodium citrate extractant:

[0034] The preparation of citric acid solution is: take 4.2g C 6 h 8 o 7 ·H 2 O was dissolved in 1000mL distilled water to prepare a 0.02mol / L citric acid solution;

[0035] The preparation of disodium hydrogen phosphate solution is: take 5.365g Na 2 HPO 4 ·7H 2 O was dissolved to 1000mL to prepare a 0.02mol / L disodium hydrogen phosphate solution;

[0036] Get 26g citric acid solution phosphorus, 174g disodium hydrogenate solution and mix to obtain the sodium citrate extractant of 20mmol / L (pH=7.0) respectively;

[0037] 2), take 25g of air-dried soil samples in a...

Embodiment 2

[0074] 1. Preparation of exogenous easy-to-extract glomycin

[0075] Preparation method is the same as example 1

[0076] 2. Materials and methods

[0077] The experiment was carried out in 2014 at No. 1 Wenzhou tangerine tree in Zhizhen National Day in the Orangery of the West Campus of Changjiang University in Jingzhou City. The experiment was designed as a single factor experiment. A total of 2 treatments, including:

[0078] 1) Zero-intensity exogenous easy-to-extract glomycin solution as a control (denoted as 0): 500mL zero-intensity exogenous easy-to-extract glomycin extract, watering treatment on the east and west sides within the drip line of citrus trees;

[0079] 2) 1 / 2 strength of exogenous easy-to-extract glomycin solution (denoted as 1 / 2): 500mL 1 / 2 strength EE-GRSP extract, watering treatment on the east and west sides within the drip line of citrus trees.

[0080] Each treatment was repeated 4 times, each tree was 1 plot, a total of 8 trees were randomly arr...

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Abstract

The invention relates to a preparation method of an exogenous easily extractable glomalin soil conditioner. The method comprises the steps of: (1) preparation of a sodium citrate extraction agent: mixing a citric acid solution with a disodium hydrogen phosphate solution in a ratio of 13:87 evenly to obtain the sodium citrate extraction agent; (2) preparation of the exogenous easily extractable glomalin soil conditioner: adding air-dried soil into the sodium citrate extraction agent, then conducting sterilization and centrifugation, and collecting the supernate, thus obtaining an exogenous extracted glomalin solution; and (3) dilution of the solution prepared by step (2) with a sodium citrate buffer solution, thus obtaining the exogenous easily extractable glomalin soil conditioner. The exogenous easily extractable glomalin soil conditioner prepared by the method provided by the invention increases the plant rhizosphere endogenous soil glomalin content, promotes plant vegetative growth and formation of plant rhizosphere water-stable macro-aggregates, improves the soil structure, improves the activity of peroxidase, polyphenol oxidase and soil phosphatase in plant rhizosphere soil, and promotes soil nutrient circulation. The preparation method has the advantages of simple process, safety and high efficiency, green and no pollution, and significant ecological and economic benefits.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a preparation method of an exogenous easily-extracted glaucomycin soil conditioner and a method for using the same. Background technique [0002] There are 730 million hectares of arable land in the world, but nearly 5 million hectares of soil are degraded or barren every year, resulting in a decline in plant productivity. Therefore, soil improvement has become a hot issue of current social concern. It is particularly important to carry out soil remediation technology. [0003] The current soil remediation methods can be roughly divided into three categories: physical, chemical and biological, including thermodynamic remediation, thermal desorption remediation, incineration, landfill, chemical leaching, composting, phytoremediation, osmotic reaction walls, biological repair etc. Among them, phytoremediation refers to adding amendments to the soil to improve the physical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/32C09K101/00
CPCC09K17/32C09K2101/00
Inventor 吴强盛邹英宁王双池格格刘春艳
Owner YANGTZE UNIVERSITY
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