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A method for repairing heavy metal cadmium in protected agricultural soil and continuous cropping obstacles

A technology for facility agriculture and continuous cropping obstacles, which is applied in the field of heavy metal cadmium in the soil of facility agriculture and the restoration of continuous cropping obstacles, can solve problems such as affecting economic benefits, declining quality of agricultural products, serious soil pollution, etc. The effect of natural circulation

Active Publication Date: 2022-05-10
GUIZHOU INST OF SOIL & FERTILIZER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Through the above analysis, the existing problems and defects of the existing technology are: the soil pollution of the existing facility agriculture is serious, which affects the economic benefits and leads to the decline of the quality of agricultural products

Method used

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  • A method for repairing heavy metal cadmium in protected agricultural soil and continuous cropping obstacles
  • A method for repairing heavy metal cadmium in protected agricultural soil and continuous cropping obstacles
  • A method for repairing heavy metal cadmium in protected agricultural soil and continuous cropping obstacles

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] Aiming at the problems existing in the prior art, the present invention provides a method for repairing heavy metal cadmium in protected agricultural soil and continuous cropping obstacles. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] Such as figure 1 As shown, the facility agricultural soil heavy metal cadmium and the continuous cropping obstacle restoration provided by the embodiments of the present invention comprise the following steps:

[0039] S101, collecting a soil sample to be repaired, and analyzing the heavy metal content and composition o...

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Abstract

The invention belongs to the technical field of soil improvement, and discloses a method for repairing heavy metal cadmium and continuous cropping obstacles in protected agricultural soil, including: analyzing the content and composition of heavy metals on soil samples; preparation of the agent; applying the prepared soil repair agent to the soil to be repaired, mixing and leveling the soil by rotary tilling; using pre-treated groundwater for soil irrigation; planting repair plants in the watered soil, and harvesting the plants. The invention uses environmentally friendly materials such as activated carbon combined with restoration plants to carry out soil restoration, which can promote the natural circulation of farmland nutrients, achieve the purpose of controlling soil environmental pollution, realize the source control of agricultural product safety, comprehensively improve the quality and safety level of agricultural products, and reduce the exchangeable rate of cadmium ions. It can stabilize the cadmium ion, change the form of heavy metal cadmium in the soil of facility agriculture, reduce the availability of heavy metal cadmium in the soil, and reduce the absorption of cadmium by crops.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, in particular to a method for repairing heavy metal cadmium and continuous cropping obstacles in protected agricultural soil. Background technique [0002] At present, protected agriculture is a modern agricultural method that uses engineering technology to efficiently produce animals and plants under relatively controllable conditions. It is generally divided into multi-span greenhouses, solar greenhouses, plastic greenhouses, and small arched Sheds) are in a semi-closed state and have the characteristics of high temperature, high humidity, large evaporation, no rain washing, no subsidence, high multiple cropping index, large amount of fertilizer (especially organic fertilizer), etc., leading to soil acidification , salinization, nutrient imbalance and excessive accumulation, and heavy metal accumulation, etc., the soil pollution is serious, which affects economic benefits and leads to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/08B09C1/105
Inventor 范成五柴冠群刘桂华罗沐欣键秦松胡岗
Owner GUIZHOU INST OF SOIL & FERTILIZER
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