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High-yield rice planting method for reducing cadmium content in rice

A planting method and rice technology, applied in the field of agricultural science, can solve the problems of wide pollution area, affecting rice yield and quality, rice cadmium pollution, etc., and achieve the effects of increasing rice yield, improving planting economic benefits, and improving rice quality

Inactive Publication Date: 2018-12-28
YIELEAD RICE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a high-yield rice planting method for reducing the cadmium content in rice. Aiming at the current large area of ​​soil cadmium pollution, the cadmium pollution of the rice planted and produced is relatively serious, which seriously affects the yield and quality of rice. Stop the accumulation of cadmium in rice, reduce the cadmium content in rice, and increase yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The cadmium-contaminated field soil where rice is grown has a pH of 5.3 and brownish-yellow soil. Soil samples are collected to detect the Cd content, and the target rice soil is repaired according to the following methods:

[0030] (1) Selection of rice varieties with low cadmium accumulation, the method is as follows:

[0031] (A) Xiangzao 45, Xiangzao 6, Tyou 167, Xiangzao 17, Zhuliangyou 211, Tyou 167, Sanxiangyou 974, Liangyou 42, Jinyou 463, Lingliangyou 268, Yi Zao 9, Zhuliangyou 120, Jiayu 253, a total of 13 commonly used hybrid rice or conventional rice as the selection range;

[0032] (B) Treat the rice seeds with 1.2% hydrogen peroxide for 24 hours, wash them with distilled water, and place them in a germination box at 30°C to accelerate germination. After the dew is white, they are sown and raised in artificial substrates equipped with perlite and 1 / 2 Hoagland nutrient solution. The weight ratio of rock to nutrient solution is 1:5.

[0033] (C) When the ri...

Embodiment 2

[0051] The rice variety "Zhuliangyou 211" was selected as the rice production variety, and the production method was as follows:

[0052] The cadmium-contaminated field soil where rice is grown has a pH of 6.1 and brownish-yellow soil. Soil samples are collected to detect the Cd content, and the target rice soil is repaired according to the following methods:

[0053] (1) low cadmium accumulation variety screening method is the same as embodiment 1

[0054] (2) Preparation of soil conditioner: 8 parts of peat, 5 parts of red mud, 16 parts of limestone, 8 parts of clinoptilolite, 9 parts of vermiculite, 11 parts of alkali slag, 13 parts of polyvinyl alcohol, arbuscular mycorrhizal fungi 35 parts of bacterial agent, 35 parts of decomposed green manure and 20 parts of sodium carboxymethyl cellulose are fully mixed and set aside.

[0055] (3) Sprinkle the soil improver on the soil surface at a rate of 100kg / mu, use the soil improver to raise the pH of the paddy soil to 7.5, and p...

Embodiment 3

[0067] The rice variety "Sanxiangyou 974" was selected for rice production, and the production method is as follows:

[0068] The cadmium-contaminated field soil where rice is grown has a pH of 5.8 and brownish-yellow soil. Soil samples are collected to detect the Cd content, and the target rice soil is repaired according to the following methods:

[0069] (1) low cadmium accumulation variety screening method is the same as embodiment 1

[0070] (2) Preparation of soil conditioner: 8 parts of peat, 5 parts of red mud, 16 parts of limestone, 8 parts of clinoptilolite, 9 parts of vermiculite, 11 parts of alkali slag, 13 parts of polyvinyl alcohol, arbuscular mycorrhizal fungi 35 parts of bacterial agent, 35 parts of decomposed green manure and 20 parts of sodium carboxymethyl cellulose are fully mixed and set aside.

[0071] (3) Sprinkle the soil improver to the soil surface at a rate of 40kg / mu, use the soil improver to increase the pH of the paddy soil to 6.5, and plant Lishi...

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Abstract

The invention discloses a high-yield rice planting method for reducing the cadmium content in rice. The method comprises the steps of selection of a low-cadmium accumulation variety, soil remediationand various agronomic measures. The method can significantly reduce the cadmium content in the rice planted in cadmium-contaminated rice soil and has the advantages of being simple, efficient and freeof secondary contamination. The method has the advantages of increasing the yield of the rice, the yield is increased while the quality of the rice is improved, the planting economic benefits are increased, and the method is suitable for the production of the low-cadmium rice in cadmium-contaminated rice planting areas and has broad application prospects.

Description

technical field [0001] The invention relates to the field of agricultural science and technology, in particular to a high-yield rice planting method for reducing cadmium content in rice. Background technique [0002] Heavy metals refer to metals with a specific gravity greater than 4 or 5. There are about 45 types, such as copper, cadmium, zinc, iron, cobalt, cadmium, manganese, cadmium, cadmium, tungsten, aluminum, gold, silver, etc. Heavy metals such as cadmium, manganese, copper, and zinc are trace elements needed for life activities, but all heavy metals are toxic to the human body if they exceed a certain concentration. [0003] The area of ​​cultivated land polluted by heavy metals such as Cd, As, Cr, Pb in my country is nearly 20 million hectares, accounting for about 1 / 5 of the total cultivated land area, and the total economic loss is at least 20 billion yuan. The Cd content of paddy soil in some areas in China has seriously exceeded the standard and has reached th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22
CPCA01G22/22
Inventor 乔保建付锡江任代胜夏祥华陶元平彭冲
Owner YIELEAD RICE IND
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