Seed coating agent for reducing arsenic absorption of crops and preparation method thereof

A technology of crops and iron oxides, which is applied in the field of preparation of seed coating agents for reducing arsenic absorption by crops and reducing arsenic absorption by crops. Difficulty of application etc.

Active Publication Date: 2018-09-21
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing arsenic-contaminated soil remediation or safe utilization technologies are the application of passivating agents or engineering measures, which not only consume a lot of manpower and material resources, but also have unknown effects on soil properties. There is still a certain degree of difficulty

Method used

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  • Seed coating agent for reducing arsenic absorption of crops and preparation method thereof
  • Seed coating agent for reducing arsenic absorption of crops and preparation method thereof
  • Seed coating agent for reducing arsenic absorption of crops and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Embodiment 1: the preparation of seed coating agent of the present invention

[0078] The implementation steps of this embodiment are as follows:

[0079] A. Preparation of iron oxide-CaCl 2 suspension

[0080] in grams of FeCl 3 ·6H 2 The ratio of O to distilled water in milliliters is 50:500, FeCl 3 ·6H 2 O dissolved in distilled water, followed by FeCl in grams 3 ·6H 2 The ratio of O to the calcium hydroxide aqueous solution in milliliters is 54:330, add 1.0 moles of calcium hydroxide aqueous solution, mix well, and obtain the pH value of the solution using a concentration of 0.5N sulfuric acid or sodium hydroxide aqueous solution to adjust to 7.5, stir, Stand still to get iron oxide-CaCl 2 suspension. The method described in this manual is used to analyze and determine that the iron oxide is ferrihydrite;

[0081] B, preparation Trichoderma aculeatus chlamydospore powder

[0082] I. Preparation of arsenic-containing solid medium

[0083] 100 parts by weigh...

Embodiment 2

[0090] Embodiment 2: the preparation of seed coating agent of the present invention

[0091] The implementation steps of this embodiment are as follows:

[0092] A. Preparation of iron oxide-CaCl 2 suspension

[0093] in grams of FeCl 3 ·6H 2 The ratio of O to distilled water in milliliters is 58:500, FeCl 3 ·6H 2 O dissolved in distilled water followed by FeCl in grams 3 ·6H 2 The ratio of O to the calcium hydroxide aqueous solution in milliliters is 50:330, add 0.8 moles of calcium hydroxide aqueous solution, mix uniformly, obtain the pH value of the solution and use the concentration of 1.0N sulfuric acid or sodium hydroxide aqueous solution to adjust to 7.0, stir, Stand still to get iron oxide-CaCl 2 suspension. The method described in this manual is used to analyze and determine that the iron oxide is ferrihydrite;

[0094] B, preparation Trichoderma aculeatus chlamydospore powder

[0095] I. Preparation of arsenic-containing solid medium

[0096] 95 parts by ...

Embodiment 3

[0103] Embodiment 3: the preparation of seed coating agent of the present invention

[0104] The implementation steps of this embodiment are as follows:

[0105] A. Preparation of iron oxide-CaCl 2 suspension

[0106] in grams of FeCl 3 ·6H 2 The ratio of O to distilled water in milliliters is 54:500, FeCl 3 ·6H 2 O dissolved in distilled water followed by FeCl in grams 3 ·6H 2 The ratio of O to the calcium hydroxide aqueous solution in milliliters is 58:330, add 1.2 moles of calcium hydroxide aqueous solution, mix uniformly, obtain the pH value of the solution and adjust to 8.0 with sulfuric acid or sodium hydroxide aqueous solution with a concentration of 2.0N, stir, Stand still to get iron oxide-CaCl 2 suspension. The method described in this manual is used to analyze and determine that the iron oxide is ferrihydrite;

[0107] B, preparation Trichoderma aculeatus chlamydospore powder

[0108] I. Preparation of arsenic-containing solid medium

[0109] 105 parts b...

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Abstract

The invention relates to a seed coating agent for reducing arsenic absorption of crops and a preparation method thereof. The preparation method comprises the steps that an arsenic-containing solid culture medium is prepared, a culture solution is prepared, trichoderma asperellum chlamydospore powder is prepared, and the seed coating agent is prepared. The seed coating agent improves the seed vitality, has a promotion effect on seed germination, and increases the germination rate by 1-2%. By means of the seed coating agent, accumulation of arsenic in the crops can be blocked, the tolerance of the crops to arsenic of soil can be improved, the arsenic absorption of the crops is greatly reduced, the growth of seeds is effectively promoted, the yield increase of the seeds is promoted, and the safe production of the crops is promoted.

Description

【Technical field】 [0001] The invention belongs to the technical field of plant protection. More specifically, the present invention relates to a seed coating agent for reducing arsenic absorption by crops, and also relates to a preparation method of the seed coating agent for reducing arsenic absorption by crops. 【Background technique】 [0002] my country is one of the countries with serious arsenic pollution in the world. According to the "National Soil Pollution Survey Bulletin" jointly issued by the Ministry of Environmental Protection and the Ministry of Land and Resources in April 2014, the rate of arsenic pollution in my country's soil is 2.7%. Most of them are medium and light pollution. Although the proportion of the total soil area is not high, the polluted areas are relatively concentrated in mining areas, smelting areas, and some suburban areas. The points where the arsenic content in the soil exceeds the standard can reach more than 40% or even higher, and the ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/14A01N63/04A01N59/16A01N59/08A01P21/00C12R1/885
CPCA01N59/08A01N59/16A01N63/30C12N1/14
Inventor 曾希柏张骞苏世鸣王亚男白玲玉黄道友朱奇宏吴翠霞
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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