Sustainable rice production method based on improvement of alkaline moderate-light arsenic polluted soil

A soil improvement and continuous production technology, applied in the restoration of polluted soil, etc., can solve the problems of inapplicability, inability to realize safe production of rice, and rise of soil pH, so as to achieve the goal of ensuring yield, realizing sustainable production, and reducing arsenic content Effect

Active Publication Date: 2021-12-07
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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Problems solved by technology

And the innermost layer of the cadmium and arsenic synchronous passivator mentioned in the patent text of CN109122136 A is a hydrogen ion chemical consumption agent, which will cause the soil pH to rise further
Therefore, the passivator mentioned in the patent text of CN109122136 A may not be suitable for the improvement of alkaline arsenic polluted soil
[0007] For the remediation of alkaline soil, the commonly used remediation methods include the use of acidic fertilizers for improvement. However, for the comprehensive improvement and utilization of alkaline arsenic-contaminated soil, it is impossible to achieve safe rice production only with acidic fertilizers. Therefore, how to comprehensively utilize physical remediation technology, chemical remediation technology and biological remediation technology, improving alkaline arsenic contaminated soil, and realizing sustainable utilization with high efficiency and low cost are the technical problems that need to be solved first in the present invention

Method used

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  • Sustainable rice production method based on improvement of alkaline moderate-light arsenic polluted soil
  • Sustainable rice production method based on improvement of alkaline moderate-light arsenic polluted soil
  • Sustainable rice production method based on improvement of alkaline moderate-light arsenic polluted soil

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Embodiment Construction

[0021] Below in conjunction with specific embodiment, further illustrate the present invention. However, these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. The experimental methods that do not indicate specific experimental conditions in the following examples are generally in accordance with conventional conditions.

[0022] There is a large area of ​​alkaline arsenic-contaminated cultivated land in the northern part of Jiangsu Province. The technical solution of the present invention will be further described through a specific example of the treatment of a typical alkaline arsenic-contaminated farmland soil in Jiangsu Province (located in a county in Yancheng City).

[0023] The groundwater level in the implementation area is relatively high, 2.0-3.0m all year round and 1.0-1.5m in summer; the implementation area belongs to the Haizhou Weili agricultural area; the implementation area is oily soil;...

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Abstract

The invention provides a sustainable rice production method based on improvement of alkaline moderate-light arsenic polluted soil, wherein the method effectively reduces the arsenic accumulation of rice by optimizing fertilization and combining with foliar spraying of silicon and selenium fertilizers and efficient moisture management measures, high-safety and efficient safe and sustainable utilization of moderate-light alkaline arsenic polluted farmland is realized, the influence of soil quality, rice yield and rice arsenic content is comprehensively considered, and a safety production technology mode suitable for the alkaline arsenic polluted soil is comprehensively designed.

Description

technical field [0001] The invention relates to the fields of crop cultivation and safe utilization of polluted land, in particular to a method for sustainably producing rice based on the improvement of alkaline medium-light arsenic-polluted soil. Background technique [0002] For the remediation of arsenic-contaminated soil, the current existing technologies are mainly divided into three categories, physical remediation technology, chemical remediation technology and biological remediation technology. Physical remediation technology mainly includes soil replacement, soil covering, turnover and attenuation, and electrodynamic remediation. The technology has quick results, but the treatment cost is high, and it is not suitable for large-scale soil restoration; chemical restoration technology mainly includes soil cleaning and soil fixation, and soil cleaning, whether it is in-situ or ex-situ cleaning, is likely to cause secondary pollution and affect the soil composition. Dest...

Claims

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Application Information

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IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/08B09C1/105B09C2101/00Y02P60/21
Inventor 史高玲高岩李江叶樊广萍刘丽珠童非陈未
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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