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High-yield rice planting method capable of efficiently reducing cadmium content in rice

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

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 that can efficiently reduce the cadmium content in rice. Aiming at the current large area of ​​cadmium pollution in the soil, the cadmium pollution of the rice planted and produced is relatively serious, which seriously affects the rice yield and quality. Through the systematic planting method Block 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

[0030] The cadmium-contaminated field soil where rice is planted has a pH of 5.4, brownish-yellow soil, soil samples are collected, and the Cd content is detected, and rice is planted according to the following method:

[0031] (1) Selection of rice varieties with low cadmium accumulation, the method is as follows:

[0032] (A) Jianglong Liangyou 237, Longke No. 3, Quanxiangyou 822, Yongyou 7753, Yongyou 25, R Yinzhan, Quanxiang Youmeizhan, Longken 203, Longken 202, Longjing 61, Changyou 2, Xiushui 14, a total of 12 commonly used hybrid rice or conventional rice as the selection range;

[0033] (B) Treat the rice seeds with 1.1% hydrogen peroxide for 24 hours, wash them with distilled water, and place them in a germination box at 28°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 1:7.

[0034] (C) When the rice seed...

Embodiment 2

[0053] The rice variety "Yongyou 25" is selected as the rice production variety, and the production method is as follows:

[0054] The cadmium-contaminated field soil where rice is planted has a pH of 6.2 and brownish-yellow soil. Soil samples are collected to detect the Cd content, and rice is planted according to the following method:

[0055] (1) low cadmium accumulation variety screening method is the same as embodiment 1

[0056] (2) Preparation of soil conditioner: 10 parts of peat, 6 parts of sepiolite, 14 parts of limestone, 10 parts of clinoptilolite, 10 parts of dolomite, 8 parts of basic fly ash, 8 parts of polyacrylamide, solution 40 parts of phosphorus bacteria agent, 25 parts of milk vetch decomposed matter, and 15 parts of sodium carboxymethyl cellulose are fully mixed and set aside.

[0057] (3) Sprinkle the soil improver to the soil surface at a rate of 40kg / mu, use the soil improver to raise the pH of the paddy soil to 7.5, and plant Lishihe with a density o...

Embodiment 3

[0070] The rice variety "R Yinzhan" is selected for production, and the production method is as follows:

[0071] The cadmium-contaminated field soil for rice planting has a pH of 5.5, brownish-yellow soil, soil samples are collected, and the Cd content is detected, and rice is planted according to the following method:

[0072] (1) low cadmium accumulation variety screening method is the same as embodiment 1

[0073] (2) Preparation of soil conditioner: 10 parts of peat, 6 parts of sepiolite, 14 parts of limestone, 10 parts of clinoptilolite, 10 parts of dolomite, 8 parts of basic fly ash, 8 parts of polyacrylamide, solution 40 parts of phosphorus bacteria agent, 25 parts of milk vetch decomposed matter, and 15 parts of sodium carboxymethyl cellulose are fully mixed and set aside.

[0074] (3) Sprinkle the soil improver to the soil surface at a rate of 60kg / mu, use the soil improver to raise the pH of the paddy soil to 6.5, and plant Lishihe with a density of 80 plants / m 2 ...

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Abstract

The invention discloses a high-yield rice planting method capable of efficiently reducing cadmium content in rice. The method comprises the steps of low-cadmium accumulation species selection, soil remediation and multiple agronomic measures. By means of the method, the cadmium content of planted rice on a piece of cadmium-polluting rice land can be significantly reduced, the method has the advantages of being simple, efficient and free from secondary pollution; rice yield is improved, rice quality is improved while the yield is improved, planting economic benefits are improved, and the methodis suitable to low cadmium rice production in a cadmium-polluting rice planting region 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 efficiently 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 ha...

Claims

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Application Information

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