Nutrient regulation and control agent for reducing lead and cadmium content of leaf vegetables and using method thereof

A regulator and nutritional technology, applied in fertilization methods, applications, fertilizer mixtures, etc., can solve the problems of unable to replenish soil nutrients in time, affecting the continuous application of regulators, and unsatisfactory remediation effects, so as to improve soil environmental quality and improve Crop yield and quality, and the effect of improving the quality of leafy vegetables

Active Publication Date: 2010-12-22
INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the complex relationship between the chemical properties of vegetable soil and crop absorption, the amount of existing heavy metal-polluted soil regulators is much higher than that of normal fertilizers, and the effect is often unstable or adversely a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh the raw material (kg) according to the following weight:

[0026] Sodium silicate 21, calcium carbonate 20, magnesium sulfate 12, urea 22, diammonium hydrogen phosphate 9, potassium sulfate 16.

[0027] Sodium silicate: This embodiment adopts the industrial grade instant powdery sodium silicate produced by Dali Zhongfashui Glass Factory, Nanhai District, Foshan City, Guangdong Province, molecular formula Na 2 O.nSiO 2 , SiO 2 The content is 55.0%;

[0028] Calcium carbonate: This embodiment adopts the industrial-grade white powdery calcium carbonate produced by Keke Calcium Industry Technology Co., Ltd., Dongguan City, Guangdong Province, with the molecular formula CaCO 3 , CaO content 56.0%;

[0029] Magnesium sulfate: This embodiment adopts industrial-grade white powder anhydrous magnesium sulfate produced by Shandong Zibo Jinxing Chemical Co., Ltd., molecular formula MgSO 4 , MgO content 32.7%;

[0030] Urea: This embodiment adopts the white solid granula...

Embodiment 2

[0037] Weigh the raw material (kg) according to the following weight:

[0038] Sodium silicate 18, calcium carbonate 16, magnesium sulfate 9, urea 29, diammonium hydrogen phosphate 11, potassium sulfate 17.

[0039] How to use nutritional regulators:

[0040] Before vegetable sowing, fully mix 18kg sodium silicate, 16kg calcium carbonate, 9kg magnesium sulfate, 29kg urea, 11kg diammonium hydrogen phosphate and 17kg potassium sulfate to obtain a mixture. Apply one-half of the mixture to the base, then plow and rake evenly to mix the control agent with the contaminated soil evenly, then sow, and after the seedlings are established, sprinkle the other half of the mixture evenly into the soil to loosen the soil , Sprinkle with water.

[0041] After using the present embodiment to plant mustard, the yield per mu of mustard increased by 12%, and the lead content in the aboveground part decreased by 25%, which effectively reduced the lead content in the aboveground part of mustard;...

Embodiment 3

[0043] Weigh the raw material (kg) according to the following weight:

[0044] Sodium silicate 23, calcium carbonate 17, magnesium sulfate 10, urea 24, diammonium hydrogen phosphate 10, potassium sulfate 16.

[0045] How to use nutritional regulators:

[0046] After the last batch of vegetables was harvested, 23kg of sodium silicate, 17kg of calcium carbonate, 10kg of magnesium sulfate, 24kg of urea, 10kg of diammonium hydrogen phosphate and 16kg of potassium sulfate were thoroughly mixed to obtain a mixture, which was based on the mixture of 60kg per mu. , apply all the mixture to the base, then plow and rake evenly, so that the regulator and the contaminated soil are evenly mixed, and then transplant the lettuce seedlings.

[0047] After using this embodiment, the yield per mu of lettuce increases by 23.5%, the cadmium content in the aboveground part decreases by 46%, and the lead content reduces by 29%, which effectively reduces the lead and cadmium content in the abovegro...

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Abstract

The invention discloses a nutrient regulation and control agent for reducing the lead and cadmium content of leaf vegetables, which comprises the following substances in percentage by weight: 18%-24% of sodium silicate, 16%-20% of calcium carbonate, 9%-12% of magnesium sulfate, 22%-30% of urea, 9%-11% of diammonium phosphate and 16%-21% of potassium sulfate. The using method of the nutrient regulation and control agent comprises the following steps: before planting the vegetable, uniformly mixing the sodium silicate, calcium carbonate, magnesium sulfate, urea, diammonium phosphate and potassium sulfate to obtain a mixture; base-applying all of the mixture, 20-60 kg per mu; turning over and harrowing uniformly so that the regulation and control agent and the polluted soil are uniformly mixed and seeding or transplanting can be performed; or base-applying half of the mixture, and uniformly dispersing the other half of the mixture into the soil after final singling of seedlings; and loosening the soil and sprinkling water. The regulation and control agent of the embodiment of the invention reduces the bioactivity of heavy metals in the soil, reduces absorption of the heavy metals of the leaf vegetable and improves the soil fertility.

Description

technical field [0001] The invention relates to a regulating agent, in particular to a nutritional regulating agent for reducing the content of lead and cadmium in leafy vegetables. Background technique [0002] Due to the unreasonable application of urban sludge, garbage and agricultural chemicals and the discharge of industrial "three wastes", the input of heavy metals in vegetable soil is increasing, which intensifies the pollution of heavy metals to vegetable soil, resulting in the detection of heavy metals in agricultural products. The yield is high. Green leafy vegetables have a strong ability to absorb and enrich heavy metals, and are the most vulnerable vegetables to heavy metal pollution. It is difficult to guarantee their safety when planted on vegetable fields polluted by heavy metals. In addition, in the process of vegetable production, a large number of continuous and unreasonable fertilization has resulted in the deterioration of the physical and chemical prop...

Claims

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Application Information

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IPC IPC(8): C05G1/00A01C21/00
Inventor 王艳红艾绍英姚建武李盟军杨少海唐明灯罗英健曾招兵
Owner INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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