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Method for planting energy sorghum in cadmium-polluted rice field

A technology of cadmium pollution and sorghum, applied in the restoration of contaminated soil, site preparation methods, applications, etc., can solve the problems of long repair time, low cadmium enrichment coefficient, broken bars and purple seedlings, etc., to shorten the emergence time and improve Seedling emergence rate and wide application range

Inactive Publication Date: 2020-01-17
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, there are some disadvantages to growing energy sorghum on cadmium-contaminated rice fields
First of all, the soil of paddy fields converted into dry fields is more prone to compaction and poorer permeability than ordinary dry fields, which is not conducive to the germination of energy sorghum seeds and the normal growth and development of seedlings. Poor soil conditions often cause the physiological metabolism of energy sorghum to be out of balance, and the field grows unevenly and takes root. Shallow, thin stems, large areas of missing seedlings, broken bars and purple seedlings often occur, and they are prone to lodging during the mature stage, which seriously affects the yield of energy sorghum. The growth of energy sorghum also has certain hazards, and the hazards of some diseases and insect pests are more serious after the water-drought reform; third, the cadmium pollution in rice fields in my country is mostly moderate to light pollution, and the biological activity of cadmium in polluted soil is low. , the enrichment coefficient of energy sorghum to cadmium is also low, resulting in low phytoremediation efficiency and long remediation time

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  • Method for planting energy sorghum in cadmium-polluted rice field

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Embodiment 1

[0051] A method for planting energy sorghum in cadmium polluted rice fields, the steps are:

[0052] A. Land selection and land preparation: Choose a plot with flat terrain, deep soil, loose soil, convenient irrigation and drainage, and good ventilation; in order to loosen the paddy field soil, improve soil temperature and ventilation, deep plowing should be 30cm, and combined with deep plowing, apply 1500kg per mu The decomposed organic fertilizer is dried in the sun for 7 days; after deep plowing, it is harrowed 2 times until the ground is flat and the soil is fine, and the top is pine and the bottom is solid. Ridge sowing, ridge height 20cm, width 2.0m.

[0053] B. Seed treatment: select sorghum seeds with good maturity, no frostbite, high germination rate, and strong bud potential. When the average temperature in spring reaches 15°C, the seeds are seasoned and coated according to the ratio of 1:100 to make the antibacterial The anti-insect growth-promoting seed coating ag...

Embodiment 2

[0067] A method for planting energy sorghum in a cadmium polluted rice field, the steps are as follows:

[0068] A. Land selection and land preparation: Choose a plot with flat terrain, deep soil, loose soil, convenient irrigation and drainage, and good ventilation; in order to loosen the paddy field soil, improve soil temperature and ventilation, deep plowing should be 30cm, and combined with deep plowing, apply 1500kg per mu The decomposed organic fertilizer is dried in the sun for 7 days; after deep plowing, it is harrowed 2 times until the ground is flat and the soil is fine, and the top is pine and the bottom is solid. Ridge sowing, ridge height 20cm, width 2.0m.

[0069] B. Seed treatment: select sorghum seeds with good maturity, no frostbite, high germination rate, and strong bud potential. When the average temperature in spring reaches 15°C, the seeds are seasoned and coated according to the ratio of 1:100 to make the antibacterial The anti-insect growth-promoting see...

Embodiment 3

[0074] A method for planting energy sorghum in a cadmium polluted rice field, the steps are as follows:

[0075]A. Land selection and land preparation: Choose a plot with flat terrain, deep soil, loose soil, convenient irrigation and drainage, and good ventilation; in order to loosen the paddy field soil, improve soil temperature and ventilation, deep plowing should be 30cm, and combined with deep plowing, apply 1500kg per mu The decomposed organic fertilizer is dried in the sun for 7 days; after deep plowing, it is harrowed 2 times until the ground is flat and the soil is fine, and the top is pine and the bottom is solid. Ridge sowing, ridge height 20cm, width 2.0m.

[0076] B. Seed treatment: select sorghum seeds with good maturity, no frostbite, high germination rate, and strong bud potential. When the average temperature in spring reaches 15°C, the seeds are seasoned and coated according to the ratio of 1:100 to make the antibacterial The anti-insect growth-promoting seed...

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Abstract

The invention discloses a method for planting energy sorghum in a cadmium-polluted rice field. The method includes steps: A, selecting and preparing land: selecting land flat in terrain and convenientfor drainage and irrigation, and loosening soil of the rice field to realize flat terrain and fine soil with the upper layer being loose and the lower layer being compact; B, treating seeds: pickingmature sorghum seeds free of frostbite, high in germination rate and strong in bud vigor; C, sowing and fertilizing: applying fertilizer special for sowing during sowing, wherein special fertilizer row and sowing row are on a same line; D, performing field management: supplementing water and applying fertilizer in the jointing period and the booting period; E, harvesting and removing. The method is easy to implement and simple and convenient in operation, and high-yield and efficient cultivation of the energy sorghum in the cadmium-polluted rice field can be realized; bactericidal and insecticidal effects are realized, seed germination can be promoted, and seedling-stage root system activity is improved; through scientific proportioning of organic nutrient and mineral nutrient of the special fertilizer, soil granular structure of the rice field is improved, nutrient needs of the energy sorghum in the whole growth and development period are met, soil cadmium of the rice field is activated, and cadmium enrichment coefficient of the energy sorghum is improved.

Description

technical field [0001] The invention belongs to the technical field of heavy metal polluted cultivated land restoration and crop planting, and more specifically relates to a method for planting energy sorghum in cadmium-contaminated paddy fields, and also relates to a preparation method of an energy sorghum seed coating agent and a special fertilizer for energy sorghum. [0002] technical background [0003] With the continuous advancement of industrialization and urbanization, the problem of heavy metal pollution in my country's soil has been paid more and more attention by people. In 2015, the "National Soil Pollution Survey Bulletin" jointly issued by the Ministry of Environmental Protection and the Ministry of Land and Resources showed that the total point exceeding the standard rate of soil in the country was 16.1%, and the point point pollutant exceeding rate of cultivated land in my country was 19.4%. Exceeding the standard rate reached 7.0%. According to statistics, m...

Claims

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Application Information

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IPC IPC(8): A01G22/20A01B79/02B09C1/00C05G3/60C05G3/80
CPCA01G22/20A01B79/02B09C1/00C05B1/02C05D9/02C05G3/00B09C2101/00
Inventor 李佰重黄道友陈心胜朱奇宏朱捍华许超王帅
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI