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Leaf surface control agent for vegetables polluted by heavy metal, preparation method thereof and use method thereof

A technology of heavy metals and control agents, applied in application, fertilizer mixtures, fertilization devices, etc., can solve the problems of limiting heavy metal pollution, long growth cycle, and low biomass, so as to reduce the incidence of nitrate and soil-borne diseases and insect pests and the input of pesticides , less investment in equipment, full-bodied fruit

Active Publication Date: 2014-08-27
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the heavy metal hyperaccumulator plants found in nature have certain limitations in practice, such as long growth cycle, low biomass, and short plants, which limit the development of phytoremediation of soil heavy metal pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A foliar control agent for heavy metal pollution in vegetables, 2.5 mmol·L in weight percentage -1 Ethyl orthosilicate (C 8 H 20 O 4 Si), 10~40μmol / L sucrose, 0.1~0.2wt% glycine and 0.1~0.2wt% alanine, 0.5wt% EM inoculum as raw materials, according to the following steps:

[0028] a. Preparation of organic compound: Mix 10~40μmol / L sucrose, 0.1~0.2wt% glycine and 0.1~0.2wt% alanine, add 0.5~1 times the amount of water to the mixture, stir evenly, that is, to obtain organic compounds;

[0029] b. Preparation of ethyl orthosilicate solution: take the amount of ethyl orthosilicate, add 1 to 2 times the amount of water as the ethyl orthosilicate, and dissolve it at 50 to 60° C. Ethyl silicate solution;

[0030] c. Mix the organic compound prepared in step a and the ethyl orthosilicate prepared in step b. After cooling, add 0.5wt% EM bacterial agent, stir evenly, and add an appropriate amount of water to the stated concentration, that is, Foliar control agent for hea...

Embodiment 2

[0035] A foliar control agent for heavy metal pollution in vegetables, 2.5 mmol·L in weight percentage -1 Sodium Silicate (Na 4 SiO 4 ), 10~40μmol / L sucrose, 0.1~0.2wt% glycine and 0.1~0.2wt% alanine aqueous solution and 0.5wt% EM inoculum as raw materials, according to the following steps:

[0036] a. Preparation of organic compound: Mix 10~40μmol / L sucrose, 0.1~0.2wt% glycine and 0.1~0.2wt% alanine, add 0.5~1 times the amount of water to the mixture, stir evenly, that is, to obtain organic compounds;

[0037] b. Preparation of sodium silicate solution: take the amount of sodium silicate, add water 1 to 2 times the amount of sodium silicate, and fully dissolve it at 50 to 60 ° C to obtain a sodium silicate solution;

[0038] c. Mix the organic compound prepared in step a and the sodium silicate solution prepared in step b evenly, after cooling, add 0.5wt% EM bacterial agent, stir evenly, add an appropriate amount of water to the stated concentration, that is, Foliar co...

Embodiment 3

[0043] A foliar control agent polluted by heavy metals in vegetables, 0.1 to 0.3 wt % KH by weight percentage 2 PO 4 , 10~40umol / L sucrose, 0.1~0.2wt% glycine and alanine solution and 0.5wt% EM inoculum as raw materials, and proceed according to the following steps:

[0044] a. Preparation of organic compound: mix 10~40umol / L sucrose, 0.1~0.2wt% glycine and 0.1~0.2wt% alanine, add 0.5~1 times the amount of water to the mixture, stir evenly, that is, to obtain organic compounds;

[0045] b. KH 2 PO 4 Preparation of the solution: take the stated amount of KH 2 PO 4 , added as the KH 2 PO 4 1 to 2 times the amount of water, fully dissolve it at 50 to 60 ° C, that is, KH 2 PO 4 solution;

[0046] c. Combine the organic compound obtained in step a and the KH obtained in step b 2 PO 4 The solution is mixed evenly, and after cooling, 0.5wt% EM bacterial agent is added, stirred evenly, and an appropriate amount of water is added to the stated concentration to obtain a ...

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Abstract

The invention provides a leaf surface control agent for vegetables polluted by Cadmium. The leaf surface control agent comprises one or more of 2.5 mmol / L tetraethoxysilane, 2.5 mmol / L sodium silicate, 0.1 wt% to 0.3 wt% monopotassium phosphate, 100 mumol / L to 400 mumol / L zinc sulfate and 100 mumol / L to 200 mumol / L ferric sulfate and further comprises 0.1 wt% to 0.2 wt% glycine, 0.1 wt% to 0.2 wt% alanine and 0.5 wt% EM fungicide. By the adoption of the leaf surface control agent, Cadmium is effectively prevented from being absorbed and transferred to the edible portions of the vegetables, the damage to growth of the vegetables of Cadmium is reduced, the yield of the vegetables is greatly increased, and the quality of the vegetables is greatly improved.

Description

technical field [0001] The invention relates to a foliar fertilizer for vegetables, in particular to a foliar fertilizer for controlling cadmium pollution. Background technique [0002] Cadmium (Cd) is widely found in nature and is a heavy metal trace element. Among the five heavy metal pollutants of Cd, Hg, As, Cr, and Pb, Cd is listed as the first, and among the 12 dangerous chemicals of global significance proposed by the United Nations Environment Program, Cd is listed as the first. Cd in soil mainly comes from human activities, such as wastewater, waste gas, and waste residues produced by mining, smelting, electroplating, and basic chemical industries, and the application of Cd-containing fertilizers, pesticides, and agricultural sludge. Vegetable Cd pollution in the soil of suburban vegetable gardens exists in large and medium-sized cities in my country, and it is becoming more and more serious. At present, the area of ​​cultivated land polluted by heavy metals such ...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 徐卫红周坤刘俊张海波张明中李仰锐
Owner SOUTHWEST UNIVERSITY