A selenium-enriched corn planting method that improves quality and efficiency and reduces heavy metal pollution

A technology for improving the quality and efficiency of selenium-enriched corn, applied in the agricultural field, can solve problems such as cadmium pollution and heavy metal pollution in selenium-rich soil, and achieve the effects of simple device structure, improved quality and yield, and increased stress resistance

Active Publication Date: 2022-03-04
黑龙江省农业科学院
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of heavy metal pollution, especially cadmium pollution, in selenium-rich soil in Hailun area, and provide a selenium-enriched corn planting method that improves quality and efficiency and reduces heavy metal pollution

Method used

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  • A selenium-enriched corn planting method that improves quality and efficiency and reduces heavy metal pollution
  • A selenium-enriched corn planting method that improves quality and efficiency and reduces heavy metal pollution
  • A selenium-enriched corn planting method that improves quality and efficiency and reduces heavy metal pollution

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Embodiment 1

[0035] A method for planting selenium-enriched corn that improves quality and efficiency and reduces heavy metal pollution of the present invention, it is carried out according to the following steps:

[0036] Step 1. Select the selenium content greater than 0.4 mg·kg in Hongguang Farm, Hailun, Heilongjiang Province -1 Two soil samples, 1kg of the first soil sample was added to 15L of AB-DTPA extraction solution for 90min extraction, and the extraction solution A was collected; 1kg of the second soil sample was added to 10L of 0.5mol / L NaHCO 3 The extract was extracted for 90 minutes, and the extract B was collected; the extract A and the extract B were mixed according to equal volumes to obtain a selenium-containing extract, wherein the selenium content in the selenium-containing extract was 3 mg / L;

[0037] Step 2: Take Pengyu 14 corn seedlings at the 2-3 leaf stage and place them in the selenium-containing extract solution for 12 hours, then spray 1.0 mmol / L spermidine on t...

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Abstract

A selenium-enriched corn planting method that improves quality and efficiency and reduces heavy metal pollution, which relates to the field of agriculture. The present invention aims to solve the problem of heavy metal pollution, especially cadmium pollution, in selenium-rich soil in the Hailun area. The present invention uses an extract containing cadmium to treat After seedlings, low concentration of selenium was used to reduce the effects of heavy metals, especially cadmium, on maize growth. In addition, through the use of vermicompost to increase fertility, improve the stress resistance of corn, and improve its quality and yield. After the scheme of the present invention is used for the unique selenium-rich land in Hailun, Heilongjiang Province, it can significantly increase the stress resistance of corn crops, especially the stress resistance to heavy metal pollution, the most important is the stress resistance of cadmium. It can also improve the quality and yield of crops. The invention is applied to the field of corn planting.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a selenium-enriched corn planting method that improves quality and efficiency and reduces heavy metal pollution. Background technique [0002] Selenium is a rare dispersed element, which is unevenly distributed in the natural environment, thus forming different selenium-rich regions and selenium-deficient zones around the world. The content of heavy metals in soil directly affects the quality and safety of agricultural products. Heavy metal pollution in farmland soil mainly comes from atmospheric deposition, sewage irrigation, application of agricultural materials (fertilizers, pesticides, mulch, etc.) and solid waste stacking. With the development of industrialization and urbanization, the problem of heavy metals in farmland has become increasingly prominent. Song Wei et al. analyzed the heavy metal pollution of cultivated land soil in 138 typical regions of my country according to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/20A01G7/06A01K67/033A01C21/00A01G25/14B65H75/44B08B3/02
CPCA01G22/20A01G7/06A01K67/0332A01C21/00A01G25/14B65H75/4492B08B3/02
Inventor 赵杨
Owner 黑龙江省农业科学院
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