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A method for reducing the absorption of melamine in soil and fertilizer by crops

A technology of melamine and crops, applied in the field of reducing the absorption of melamine in soil and fertilizer by crops, can solve the problems of difficult metabolism, high cost, easy to form residues, etc., and achieve the effect of improving fertilizer efficiency

Inactive Publication Date: 2016-06-08
上海出入境检验检疫局工业品与原材料检测技术中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN1506337A discloses a controlled-release fertilizer composed of solid by-products of melamine production, quick-acting nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, trace element fertilizer and soil conditioner. These patents directly use melamine as raw material or compound it with nitrogen fertilizer, which is not only expensive , and there are food safety risks caused by direct absorption of melamine by crops
There are other literature reports that after melamine is metabolized, it can keep from being further transformed and metabolized. It can be seen that it is not easy to be metabolized in plants, and it is easy to form residues.

Method used

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  • A method for reducing the absorption of melamine in soil and fertilizer by crops
  • A method for reducing the absorption of melamine in soil and fertilizer by crops

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] After the addition of catalyst in Example 1, the absorption of melamine by crops is significantly reduced

[0016] The experimental steps are:

[0017] Step 1: Prepare the soil with a melamine concentration of 100mg / kg. After grinding, weigh 5kg and distribute it in 3 pots. One of them will not be treated, and the remaining 2 will be mixed with catalysts A and B respectively. The amount of catalyst added is the same as The concentration ratio of melamine was 2%. The experiment consisted of 4 treatments, each with 3 replicates. (catalyst A is a superacid catalyst; B is an acidic molecular sieve);

[0018] Step 2: Plant 25 green vegetables in each pot, and each control group grows naturally under the same external conditions such as light and watering. No pesticides are applied during the growth period, and each pot is watered about 500mL each time;

[0019] Step 3: Wash the obtained vegetables, cut them into pieces, weigh 5g each in a conical flask, add 50mL of 1% tri...

Embodiment 2

[0023] Different additives of embodiment 2 are mixed with melamine to influence on the absorption of green vegetables

[0024] The operating steps of embodiment 2 are the same as embodiment 1, and the difference is that melamine is divided into two kinds, and one is to use 15 N-isotope-labeled melamine, the other is 14 For N melamine, there are three types of catalysts added: A, B, and C, and they are fully mixed for cultivation. The experimental data is shown in attached table 1, in which: Catalyst A is a super-acid catalyst; B is an acidic molecular sieve; C is biochar.

[0025] It can be seen from the attached table 1 that the amount of melamine in green vegetables is the least for all the added species to add catalysts A and B. Explain that catalyst A, B have the effect of reducing the absorption of melamine prepared by green vegetables in soil or fertilizer, by the addition ratio test of melamine isotope, the result shows that in green vegetables 15 N and 14 The propo...

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Abstract

The invention relates to a method for reducing absorption of melamine in soil and fertilizer into crops. According to the method, catalysts of different types are added to soil and fertilizer, so that absorption of melamine into crops is greatly reduced. The method can be popularized to agricultural production, and has great commercial prospect and great social significance in solving the quality safety problem that melamine probably exists in crop products.

Description

1. Technical field [0001] The invention relates to a method for reducing the absorption of melamine in soil and fertilizers by crops. The method has great innovations in the selection and design of catalysts, reducing the absorption of melamine by crops, degrading melamine and improving fertilizer efficiency, etc., and can be truly and effectively The effect of reducing the absorption of melamine by crops is very satisfactory. 2. Background technology [0002] Melamine is a triazine nitrogen-containing heterocyclic organic compound with the molecular formula C 3 N 6 h 6 , its nitrogen content is as high as 66.6%. my country produces a large amount of melamine every year, mainly containing melamine and its hydrolyzed products ammeline, ammeline, cyanuric acid, diatomaceous earth, etc., which are directly discharged, which not only pollutes the environment, but also wastes resources. In fact, the total nitrogen content of the waste residue produced in the melamine producti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G7/00
Inventor 孙明星蔡婧周辉屠虹
Owner 上海出入境检验检疫局工业品与原材料检测技术中心