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Method for ensuring safe output of paddy planted in lead mild-moderate polluted soil and used preparation

A technology of polluted soil and preparations, applied in the direction of application, nitrogen fertilizer, fertilizer mixture, etc., can solve the problems of affecting the absorption and transport efficiency of heavy metals such as lead, the absorption and utilization rate is small, and increase the difficulty of operation, so as to achieve no toxic side effects and easy operation , the effect of promoting rice growth

Active Publication Date: 2015-04-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that, for rice, manganese and selenium are trace elements within a certain concentration range, which are beneficial to the growth of rice, but when they exceed a certain concentration, they become harmful elements, which inhibit the growth of rice and affect the yield of rice. For farmers, it is difficult to grasp and increase the difficulty of operation
In addition, compared with root fertilization, foliar liquid surface spraying has a lower absorption and utilization rate, which relatively affects its absorption and transport efficiency of lead and other heavy metals in rice.

Method used

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  • Method for ensuring safe output of paddy planted in lead mild-moderate polluted soil and used preparation
  • Method for ensuring safe output of paddy planted in lead mild-moderate polluted soil and used preparation
  • Method for ensuring safe output of paddy planted in lead mild-moderate polluted soil and used preparation

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The preparation method of the preparation (preparation for reducing lead content in rice grains) for ensuring the safety of rice planted in mildly polluted soil with lead, carries out the following steps in sequence:

[0037] Add 1L of water to the reaction kettle, adjust the water temperature to 50-60°C, then add 30g of L-methionine, 180g of L-cysteine, 45g of L-selenomethionine, 120g of potassium pyrophosphate, sulfuric acid Ammonium 120g and compound sodium nitrophenolate 14g, after each component is added, react at a constant temperature of 50-60°C for 30 minutes before adding the next component, until the compound compound sodium nitrophenolate is added and kept at a constant temperature of 50-60°C React for 30 minutes. The reaction product is cooled to room temperature, filtered (filtered through a 2500-mesh filter), sterilized (heated at 121°C for 20 minutes), and filled to become a finished product---a preparation for ensuring the safety of rice planted in mildl...

Embodiment 2

[0047] The preparation method of the preparation (preparation for reducing the lead content in rice grains) for ensuring the safety of rice planted in lightly polluted soil with lead includes the following steps in sequence: add 1L of water to the reaction kettle, adjust the water temperature to 50-60°C, and then sequentially Add 25g of L-methionine, 150g of L-cysteine, 40g of L-selenomethionine, 110g of potassium pyrophosphate, 110g of ammonium sulfate and 13g of sodium nitrophenolate. After reacting at a constant temperature at ℃ for 30 minutes, add the next component until the sodium binitrophenolate as the last component is added and react at a constant temperature of 50-60°C for 30 minutes. The reaction product is cooled, filtered, sterilized, and filled to form a finished product --- a preparation for ensuring the safety of rice planted in slightly lead-polluted soil (a preparation for reducing the lead content in rice grains).

[0048] The above-mentioned preparations w...

Embodiment 3

[0054] The preparation method of the preparation (preparation for reducing the lead content in rice grains) for ensuring the safety of rice planted in lightly polluted soil with lead includes the following steps in sequence: add 1L of water to the reaction kettle, adjust the water temperature to 50-60°C, and then sequentially Add 20g of L-methionine, 130g of L-cysteine, 35g of L-selenomethionine, 100g of potassium pyrophosphate, 100g of ammonium sulfate and 12g of sodium nitrophenolate in batches. React at a constant temperature of 60°C for 30 minutes before adding the next component, until sodium binitrophenolate is added as the last component and react at a constant temperature of 50-60°C for 30 minutes. The reaction product is cooled, filtered, sterilized, and filled to form a finished product --- a preparation for ensuring the safety of rice planted in slightly lead-polluted soil (a preparation for reducing the lead content in rice grains).

[0055] The above-mentioned pre...

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Abstract

The invention discloses a preparation for ensuring safety of paddy planted in lead mild-moderate polluted soil, a preparation method comprises the following steps: adding 1L of water in a reaction vessel, adjusting water temperature to 50-60 DEG C; then respectively adding 20-30g of L-methionine, 120-180g of L-cysteine, 30-45g of L-selenomethionine, 100-120g of potassium pyrophosphate, 100-120g of ammonium sulfate and 12-14g of compound sodium nitrophenolate in order for mixing, cooling the obtained object to room temperature, filtering, disinfecting, and loading to obtain the finished product. The invention also provides a method for ensuring safe output of paddy planted in lead mild-moderate polluted soil by using the preparation. By employing the method, lead content of paddy rice grains in mild lead pollution region is lower than a limit value of lead in rice in a food hygienic standard in our country (the total lead amount does not exceed 0.2mg / kg).

Description

technical field [0001] The invention belongs to the field of heavy metal-polluted soil treatment and agricultural product safety in environmental protection, and specifically relates to a preparation for ensuring the safe output of rice grains planted on soil with moderate lead pollution and a usage thereof. Background technique [0002] The situation of heavy metal pollution in soil in my country is serious, which has seriously affected the quality of agricultural products and food safety. The "National Soil Pollution Survey Bulletin" jointly issued by the Ministry of Environmental Protection and the Ministry of Land and Resources on April 17, 2014 shows that the total soil point exceeding the standard rate in the country is 16.1%, and the soil point exceeding rate of cultivated land is as high as 19.4%. is one of the important contributors. Lead is one of the most toxic heavy metal elements known, which can be absorbed by plants and transferred to the aboveground parts, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B17/00C05G3/00C05C3/00C05C11/00C05D9/02
Inventor 谢晓梅廖敏张楠黄宇叶照金
Owner ZHEJIANG UNIV
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