A kind of selenium-enriched and cadmium-reduced foliar fertilizer for rice

A technology of foliar fertilizer and rice, which is applied in the direction of potassium fertilizer, nitrogen fertilizer, phosphorus fertilizer, etc., can solve the problems of lack, unfavorable rice growth, and plant growth impact, and achieve the effect of promoting improvement, promoting rapid and healthy growth, and solving the effect of nutrient element precipitation

Active Publication Date: 2020-07-28
GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plant selenium-enriched and cadmium-reducing ecological nutrition conditioner can promote crops to absorb nutrients efficiently, grow quickly and healthily, reduce various toxic and harmful substances, especially cadmium and arsenic in polluted soil have obvious effects, and at the same time produce high-quality selenium-enriched Agricultural products; it has a wide range of applications and can be used for various crops such as rice, wheat, tea, fruits, vegetables, and medicinal materials. However, the nutritional conditioner lacks the trace elements required by plants, which is not conducive to the growth of rice. In addition, humic acid is used as a chelating agent It is easy to cause precipitation of trace elements such as zinc, magnesium, manganese, copper, etc., and these elements are precisely the nutrients necessary for plant growth, which have a great impact on plant growth

Method used

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  • A kind of selenium-enriched and cadmium-reduced foliar fertilizer for rice

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Experimental program
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Effect test

Embodiment 1

[0026] The rice selenium-rich cadmium-reducing foliar fertilizer of the present embodiment consists of citric acid monohydrate 30g, saponin 0.5g, sodium selenite 15g, urea 220g, potassium chloride 55g, potassium dihydrogen phosphate 90g, Composed of 2g soluble trace element compound (magnesium chloride 1g, ferrous sulfate 1g), soybean polypeptide 7g, tartaric acid 6g.

[0027] The preparation method of the rice selenium-enriched and cadmium-reducing foliar fertilizer of the present embodiment comprises the following steps:

[0028] A. Grind the saponins, dry in vacuum at 45°C for 6 hours, add 60% ethanol with a volume fraction of 35 times the total weight, and extract under the conditions of 1.5MPa extraction pressure, 30min extraction time, and 680W microwave power Perform microwave extraction, filter, and reflux the resulting filtrate for 3 hours, then concentrate to a volume of 10ml and set aside;

[0029] B. Dissolve citric acid monohydrate, sodium selenite, urea, potassi...

Embodiment 2

[0036] The rice selenium-enriched and cadmium-reducing foliar fertilizer of the present embodiment consists of citric acid monohydrate 45g, saponin 2.5g, sodium selenite 25g, urea 160g, potassium chloride 70g, potassium dihydrogen phosphate 70g, Composed of 20g soluble trace element compound (zinc sulfate 5g, magnesium nitrate 7g, manganese chloride 3g, ferrous chloride 5g), soybean polypeptide 3g, tartaric acid 3g.

[0037] The preparation method of the rice selenium-enriched and cadmium-reducing foliar fertilizer of the present embodiment comprises the following steps:

[0038] A. Grind the saponins, dry in vacuum at 30°C for 10 hours, add 80% ethanol with a volume fraction of 30 times the total weight, and extract under the conditions of 0.5 MPa extraction pressure, 50 min extraction time, and 620 watts of microwave power Perform microwave extraction, filter, and reflux the resulting filtrate for 5 hours, then concentrate to a volume of 20ml and set aside;

[0039] B. Diss...

Embodiment 3

[0046] The rice selenium-enriched and cadmium-reducing foliar fertilizer of the present embodiment consists of citric acid monohydrate 35g, saponin 1.8g, sodium selenite 20g, urea 200g, potassium chloride 62g, potassium dihydrogen phosphate 80g, Composed of 11g of soluble trace element compounds (3g of zinc chloride, 4g of magnesium sulfate, 1g of copper sulfate, 1g of manganese sulfate, 2g of ferrous nitrate), 5g of soybean polypeptide, and 4g of tartaric acid.

[0047] The preparation method of the rice selenium-enriched and cadmium-reducing foliar fertilizer of the present embodiment comprises the following steps:

[0048] A. Grind the saponins, dry in vacuum at 37°C for 8 hours, add 70% ethanol with a volume fraction of 32 times the total weight, and carry out under the conditions of extraction pressure of 1 MPa, extraction time of 38 minutes, and microwave power of 650 watts Microwave extraction, filtration, the obtained filtrate was refluxed for 4h, then concentrated to ...

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Abstract

The invention belongs to the technical field of rice planting fertilizers, in particular to a rice selenium-enriching and cadmium-reducing foliar fertilizer. The foliar fertilizer comprises citric acid monohydrate, small fruit saponin, sodium selenite, urea, potassium chloride, potassium dihydrogen phosphate, soluble trace element compounds, soybean peptides and tartrate. The foliar fertilizer greatly improves the absorption and transformation rate of rice for selenium, and further has a good cadmium inhibiting property, and is rich in nutrients, easily absorbed by the rice, high in selenium enriching and cadmium reducing efficiency and stable in effect after being sprayed to the rice, so that the rice is high in yield.

Description

【Technical field】 [0001] The invention relates to the technical field of rice planting fertilizers, in particular to a rice foliar fertilizer enriched in selenium and reduced in cadmium. 【Background technique】 [0002] Rice is one of the main grains in the world, and more than half of China's population takes rice as a staple food. The nutritional value and health quality indicators of rice are closely related to the health of the people. According to reports, the rate of pollutants in China's cultivated land soil points exceeding the standard is 19.1%, and the rate of cadmium exceeding the standard is 7.0%. Rice has the habit of enriching the heavy metal cadmium, and is the bulk cereal crop with the strongest ability to absorb cadmium. Cadmium is a non-essential element for the human body and has toxic effects on the human body, animals and plants. People will face the risk of chronic poisoning if they eat food with excessive cadmium content for a long time. At present, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G5/23
CPCC05B7/00C05G3/00C05G5/20C05C9/00C05D1/02C05D9/00C05D9/02C05F11/00
Inventor 黄太庆江泽普邢颖廖青梁潘霞
Owner GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI
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