Combined application of zinc-selenium agricultural preparation and soil heavy metal repairing agent

A heavy metal and soil technology, applied in the restoration of polluted soil, etc., can solve the problems of narrow application, difficult repeated implementation, difficult to promote, etc.

Active Publication Date: 2014-10-29
CHENGDU NEWSUN CROPSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese patent 200910115020 discloses a soil remediation method. By digging a liquid injection well and building a reaction wall, the chitosan eluent is injected into the soil. However, the inventors found that this method has a large amount of engineering, is inconvenient to apply, and is difficult to popularize. ;
[0006] Chinese patent 201110413145 discloses a method for remediating heavy metal cadmium-contaminated soil, using cadmiu...

Method used

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  • Combined application of zinc-selenium agricultural preparation and soil heavy metal repairing agent
  • Combined application of zinc-selenium agricultural preparation and soil heavy metal repairing agent
  • Combined application of zinc-selenium agricultural preparation and soil heavy metal repairing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1 The preparation of soil remediation agent of the present invention

[0057] Chitosan (Chengdu Qimei Biological Technology Co., Ltd.) and lentinan contained in the soil remediation agent of the present invention can all adopt commercially available products, but preferably the lentinan with a larger amount of consumption can be prepared according to the following method, so that its cost is lower Low, more suitable for promotion and application.

[0058] (1) Preparation of Lentinan

[0059]Crush the fruiting bodies of shiitake mushrooms, pass through a 30-mesh sieve, take 200kg of powder that can pass through the sieve (the particles that cannot pass the sieve will be returned to the pulverizer for crushing), add 1000L of water and soak at 80°C for 1 hour, stir during the period, and then filter to retain the clear liquid; Add 1000L water to soak for 1 hour at 80°C for the first soaking residue, stir during the period, then filter to retain the clear...

Embodiment 2

[0064] Embodiment 2 Soil remediation agent of the present invention studies on soil heavy metal remediation and plant quality improvement

[0065] The Soil and Fertilizer Research Institute of Sichuan Academy of Agricultural Sciences was entrusted to conduct a field test in Pujiang County in a tea garden planted with the No. 9 variety of Chuancha. At the beginning of the test, the following soil repair agent or control was directly applied to the randomly grouped plots, and the soil was turned over. The rest refers to the conventional management of tea gardens:

[0066] A, negative control group: negative control, 90kg / mu;

[0067] B, positive control group 1: positive control group 1, 90kg / mu;

[0068] C, positive control group 2: positive control group 2, 90kg / mu;

[0069] D, low-dose experimental group: soil remediation agent of the present invention, 22.5kg / mu;

[0070] E, middle dose experimental group: soil remediation agent of the present invention, 45kg / mu; ...

Embodiment 3

[0082] Embodiment 3 The preparation of zinc-selenium agricultural preparation of the present invention

[0083] Take 0.1 g of sodium selenite, mix it with 0.1 g of zinc sulfate heptahydrate (calculated as zinc sulfate), add it into water together, make up to 1 L with water, mix well and then use it as the foliar spraying agent of the present invention. The foliar spray is preferably formulated just before use.

[0084]

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Abstract

The invention provides combined application of an agricultural preparation containing zinc-selenium and a soil heavy metal repairing agent. The soil heavy metal repairing agent comprises lentinan and chitosan. With the combined application, the effect of the soil heavy metal repairing agent is enhanced while the plane yield is improved, and the content of heavy metal, such as cadmium, in plants (especially in plant seeds) is obviously reduced.

Description

technical field [0001] The invention belongs to the field of pollutant treatment and the field of agricultural compositions. Specifically, the invention relates to the joint application of zinc-selenium agricultural preparations and soil heavy metal remediation agents. Background technique [0002] In recent years, the problem of heavy metal pollution in my country's soil has become increasingly prominent, posing a serious threat to the ecological environment, food safety and human health, which cannot be ignored. Waste gas, waste water, and waste residues discharged from industries such as dyestuffs, chemicals, tanning, mineral mining, smelting, and processing contain a large amount of heavy metals. Into the soil through other methods, resulting in an increase in the content of heavy metals in the soil, especially the exchangeable heavy metals, which are directly absorbed and enriched by crops, directly threatening human health. [0003] At present, the soil is repaired by...

Claims

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Application Information

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IPC IPC(8): B09C1/08
Inventor 何其明国锦琳杨锡良廖立群詹绍军姜勇
Owner CHENGDU NEWSUN CROPSCI
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