CN106106517B - A kind of pouring root type resistance control agent preparation method and application reducing pakchoi cadmium content - Google Patents
A kind of pouring root type resistance control agent preparation method and application reducing pakchoi cadmium content Download PDFInfo
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- CN106106517B CN106106517B CN201610488946.6A CN201610488946A CN106106517B CN 106106517 B CN106106517 B CN 106106517B CN 201610488946 A CN201610488946 A CN 201610488946A CN 106106517 B CN106106517 B CN 106106517B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/06—Aluminium; Calcium; Magnesium; Compounds thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/46—N-acyl derivatives
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- Health & Medical Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a kind of pouring root types to hinder control agent preparation method and application, it is made of a certain proportion of chelating calcium, potassium silicate, Polyurethane-epoxy resin, deionized water, its step: A, weighing a certain proportion of Polyurethane-epoxy resin and mixed in mass ratio with water, stirring to dissolution；B, a certain proportion of chelating calcium is weighed, is dissolved with water, is stirred until homogeneous solution；C, it weighs a certain proportion of potassium silicate to be dissolved with water, is stirred until homogeneous solution；D, the chelating calcium dissolved, potassium silicate solution are mixed with Polyurethane-epoxy resin, is stirred evenly, obtain mixture with water constant volume, obtain the resistance control agent of pouring root type cadmium.Application of the agent in pakchoi is kept the safety in production.The constituent of resistance control agent is easily obtained, easy to operation；Effect is obvious, significantly reduces the intracorporal cadmium content of plant；Environment will not be polluted.Pakchoi overground part cadmium content can be effectively reduced in the resistance control agent combination of pouring root type cadmium, and the amplitude that reduces is 70.30%, improves the nutritional quality of pakchoi.
Description
Technical field
The invention belongs to agricultural environment child care and recovery technique field, are more particularly to a kind of pakchoi overground part cadmium content
Control agent is carried out, the preparation method that a kind of pakchoi overground part cadmium content carries out control agent is also related to, further relates to a kind of pouring root type
The purposes of cadmium resistance control agent, is suitable for vegetable plot cadmium pollution soil.
Background technique
Since Metallurgical Factory and Cadmium treated factory rely on urban development, along with population of city districts is intensive, it is limited etc. to plough
Reason, the agricultural product such as the agricultural product of suburban area especially vegetables become the main source of major urban vegetable supply.But with
Various municipal refuses and sewage be poured into and outskirts of a town vegetable grower is pursues maximum return and excessive fertilization, while using surrounding city
Water source is irrigated, and a variety of factors cause suburb soil cadmium content to increase, and urban vegetable cadmium excessive problem occurs in succession, Ha Er
There is the report of cadmium pollution on the ground such as shore, zhuzhou,hunan and the western Hunan, Guangdong, Guangxi, Guizhou, Sichuan, Zhejiang Foochow.Feng Hongyan exists
Pollution situation to aluminium cadmium in Jiangsu Province seaweed in 2014 carries out Risk Monitoring, and the exceeding standard rate (studying and judging value≤0.2mg/kg) of cadmium reaches
To 89.5%；Qin Zhiying etc. (2007) is to 5 city agricultural product lead cadmium pollution analysis of Guangxi the result shows that Nanning City's vegetables exceeding standard rate
It is 24.3%；2002 sources Nian Tangshu etc. acquire 349 vegetables samples in 42, the district small towns of Chongqing City 29 and carry out quality safety
Research show that the exceeding standard rate of cadmium is 11.5% and the exceeded conclusion the most serious of leaf vegetables, the above result shows that China vegetable plot is native
Than more serious, vegetables cadmium pollution is administered extremely urgent for earth and vegetables cadmium pollution.
There are two types of different approach for the improvement of current heavy-metal contaminated soil both at home and abroad: first is that it is fixed or heavy metal-passivated,
Invalid state is converted by available state, the effective concentration of heavy metal-polluted soil is made to be reduced to harmless level, to reduce a soil huge sum of money
Belong to the bio-toxicity of element, control heavy metal enters food chain and pollution surrounding enviroment (Ling Weiwei 2011；Tian Weidong 2008)；Two
It is activation heavy metal, the removal efficiency of heavy metal-polluted soil is improved by promotion bio-absorbable, reduces the total amount of heavy metal-polluted soil
To harmless level (Siegel S M et al 1986；Zeng M et al 2008；Once quick to wait 2005).Currently, lime, furnace
The alkaline matters such as slag are passivated cadmium in soil because soil pH value can be improved for it, effect be widely used rapidly and with
Base Shi Weizhu, but chronic administration these substances will cause soil hardening, be not in the long run solve the problems, such as cadmium pollution it is basic it
Method.With the development of agricultural, the advanced mechanical agricultural measures of various agriculturals emerge one after another, and apply the resistance control agent of type cadmium compared to base, fill
The resistance control agent of root type cadmium has better development prospect.
Summary of the invention
It is to be the provision of a kind of pouring root the object of the invention is that existing base is overcome to apply type cadmium resistance control agent Shortcomings
The resistance control agent of type cadmium, main component silicon, the calcium of pouring root type cadmium resistance control agent are nutrient molecule required for vegetables, Polyurethane-epoxy resin
Also there is soil moisture conservation getting fat, active balance soil PH other than having the transfer effect for inhibiting cadmium, avoid that chemical fertilizer is used for a long time
The effect of acid soil property caused by material, and be formulated rationally, it is easy to use.
Another object of the present invention is to be the provision of a kind of preparation method of pouring root type cadmium resistance control agent, easy to implement the method,
It is easy to operate, complicated production technology is not needed, and prepared cadmium resistance control agent property is stablized, and a huge sum of money can be widely used in
Belong to cadmium pollution and administers aspect.
A further object of the invention is the provision of a kind of pouring root type cadmium resistance control agent in pakchoi safety in production
Using being applicable in the vegetable plot of cadmium pollution, can not only inhibit vegetables to Cadmium accumulation, quality of vegetable can also be improved.
In order to achieve the above purpose, the present invention uses following technical measures:
Basic ideas of the invention are: outskirts of a town vegetable plot is a city " vegetable basket ", and the cadmium pollution of outskirts of a town vegetable plot is seriously endangered
The health for having done harm to city dweller, influences social stability.Existing base applies type cadmium resistance control agent, and there is organic resistance control agent effects
Not lasting, inorganic resistance control agent amount of application is big, easily causes the problems such as soil hardening, how to screen that a kind of ratio is suitable, takes effect rapidly
And the resistance control agent combination being free from side effects is the most important thing of the research of cadmium resistance control agent.Therefore, the present invention is by organic resistance control agent
Inorganic resistance control agent combination with having control cadmium effect, improves embodiment, and filtering out one kind more greatly reduces on vegetable field
The pouring root type cadmium resistance control agent of portion's cadmium content.
A kind of pouring root type cadmium resistance control agent, it is made of raw material from the following weight:
Chelating calcium and potassium silicate are to analyze pure or chemically pure reagent；
Water is deionized water.
A kind of pouring root type cadmium resistance control agent, it is made of raw material from the following weight (preferred scope):
A kind of pouring root type cadmium resistance control agent, it is made of raw material from the following weight (preferable range):
A kind of pouring root type cadmium resistance control agent, it is made of raw material from the following weight (best range):
A kind of pouring root type cadmium resistance control agent, it is made of raw material from the following weight (optimum value):
A kind of preparation method of pouring root type cadmium resistance control agent, the steps include:
A, weigh a certain proportion of Polyurethane-epoxy resin (γ-PGA) with water is that 1:10 is mixed in mass ratio, and stirring is extremely
It is completely dissolved；
B, it weighs a certain proportion of chelating calcium (EDTA-Ca), be in mass ratio that 1:100 is dissolved with water, stir to equal
Even solution；
C, a certain proportion of potassium silicate (K is weighed2SiO3·nH2It O), is in mass ratio that 1:100 dissolved (can be with water
Accelerate to dissolve with ultrasonic wave), it is stirred until homogeneous solution；
D, chelating calcium (EDTA-Ca), the potassium silicate (K that will have been dissolved2SiO3·nH2O) solution and Polyurethane-epoxy resin
(γ-PGA) is carried out uniformly mixed, is carried out constant volume with about the 60% of required water, obtain mixture, obtain a kind of pouring root type cadmium resistance
Agent is controlled, it is spare.
A kind of application of the pouring root type cadmium resistance control agent in pakchoi safety in production, the steps include:
1. being uniformly mixed by the component dissolution of pouring root type cadmium resistance control agent；
2. it is primary every 7 days pouring roots to before mature after emergence, altogether three times, each every plant of 10ml；
3. between centered on crop root, radius is no more than 5cm and carries out pouring root.
The working mechanism of this resistance control agent:
1, interionic is there is antagonism, competitive binding site between calcium, silicon and cadmium ion, oxidative stress and anti-oxidant system
System and Ca2+And calmodulin is related, calcium promotes the generation of chelating agent in plant, enhancing Process of chelating and detoxicification, with other calcium element phases
Than the lasting effect of EDTA-Ca is good, and effect is fast；Silicon can improve the resistance of vegetables, improve self protecting for pakchoi Photosynthetic
Shield ability, the polyphenoils enzymatic activity for reducing the injury of plasmalemmae of root and blade under Cd stress, improving plant leaf under Cd stress,
Inhibit the accumulation of free radical.
2, Polyurethane-epoxy resin (γ-PGA) is a kind of high molecular material, is generated by microbial fermentation in nature, due to not having
It is toxic, without harm, natural decomposition and can there is good fertilizer synergistic to act on and receive extensive attention, γ-PGA strand
Upper a large amount of free carboxy, these groups make it with very strong water imbibition while can have in conjunction with cation as ligand
Certain metal-chelating effect, can be used for Heavy Metal Pollution Control.
Compared with prior art, the present invention having the advantages that:
1. the constituent of this resistance control agent is easily obtained, easy to operation；
2. this resistance control agent agent effect is obvious, the intracorporal cadmium content of plant is significantly reduced；
3. this resistance control agent not will cause secondary pollution to environment.
Pakchoi overground part cadmium content can be effectively reduced in pouring root type cadmium resistance control agent combination of the present invention, and reduction amplitude is
70.30%, while the nutritional quality of pakchoi can be improved.
Specific embodiment
Embodiment 1:
A kind of pouring root type cadmium resistance control agent, it is made of raw material from the following weight:
A kind of preparation method of pouring root type cadmium resistance control agent, the steps include:
A, weigh a certain proportion of Polyurethane-epoxy resin (γ-PGA) with water is that 1:10 is mixed in mass ratio, and stirring is extremely
It is completely dissolved；
B, a certain proportion of chelating calcium (EDTA-Ca), potassium silicate (K are weighed2SiO3·nH2O), in mass ratio it is 1 with water:
100 are dissolved；
C, chelating calcium (EDTA-Ca), the potassium silicate (K that will have been dissolved2SiO3·nH2O) solution and Polyurethane-epoxy resin
(γ-PGA) is carried out uniformly mixed, is carried out constant volume with about the 60% of required water, obtain mixture, spare；
A kind of pouring root type cadmium resistance control agent, it is made of raw material from the following weight:
Following preparation step is same as Example 1
| Embodiment and raw material | 2 | 3 | 4 | 5 | 6 |
| Chelate calcium | 0.18 | 0.18 | 0.2 | 0.22 | 0.23 |
| Potassium silicate | 0.18 | 0.2 | 0.18 | 0.22 | 0.23 |
| γ-PGA | 0.02 | 0.015 | 0.015 | 0.01 | 0.008 |
| Water | 99.62 | 99.605 | 99.605 | 99.55 | 99.532 |
| It amounts to | 100 | 100 | 100 | 100 | 100 |
Embodiment 7:
A kind of application of the pouring root type cadmium resistance control agent in pakchoi safety in production, the steps include:
1. being dissolved by the component that pouring root type cadmium hinders control agent with water, it is uniformly mixed；
2. it is primary every 7 days pouring roots to before mature after emergence, altogether three times, each every plant of 10ml；
3. between centered on crop root, radius is no more than 5cm and carries out pouring root.
Embodiment 8:
Below with reference to example in detail:
Test period: 2015；Test site: Wuhan.
A kind of application of the pouring root type cadmium resistance control agent in pakchoi safety in production, the steps include:
1) long-term cropping: pakchoi
2) soil
Wuhan City, Hubei Province Hongshan District Hua Zhong Agriculture University Lion Rock yellowish soil, the full cadmium content of soil itself are
0.0516mg/kg, pH 6.20, then caddy 1.0mg/kg soil is added by external source.
3) pot experiment is arranged
1. potting soil cadmium cures: pot experiment uses Hua Zhong Agriculture University's Lion Rock yellowish soil with soil, will adopt back
Soil dries, and after mixing sieving, fills basin, cadmium (CdCl is added by the concentration of 1mg/kg soil in every basin 3kg soil2·2.5H2O, AR), to soil
After earth is slightly dry, every basin soil is mixed thoroughly and is cured (on October 10th, 2015 on 2 16th, 2016).
2. on 2 23rd, 2016 are sowed, every basin carries out root irrigation after being colonized 6 plants, 15 days after emergence, with 0.2%
Ca, 0.2%Si and 0.01% γ-PGA carry out pouring root as control, compare application effect.
3. primary every sprinkling in 7 days or so, every plant of each 10ml cadmium resistance control agent amounts to 3 times
4. on 04 07th, 2016 harvests, amount to growth 44 days.
4) it tests
1. test method
After the pakchoi sample of harvest is cleaned with deionized water, finish by 105 DEG C, and drying to constant weight in 65 DEG C,
It is ground with stainless steel plant sample grinding machine, crosses 60 meshes and be used for Cadmium detrmination；Using nitration mixture (nitric acid+perchloric acid 9+1) digestion-atom
Absorption spectrophotometer measures cadmium content, content such as table 1.Another part for the index of quality (vitamin C, soluble protein,
Soluble sugar and nitrate) measurement, content such as table 2.
2. test result
Influence of 1 pouring root type cadmium of the table resistance control agent to pakchoi overground part cadmium content
| Root irrigation | Overground part cadmium content (mgkg-1FW) |
| Deionized water (control) | 0.330a |
| Ca | 0.135c |
| Si | 0.240b |
| γ-PGA | 0.208b |
| Ca+Si+γ-PGA | 0.098c |
70.30% is reduced in pakchoi overground part cadmium content and contrast ratio with cadmium of the present invention resistance control agent and reaches conspicuousness
Difference (P=0.05) reduces 27.41% with individually calcium is chelated with application, and potassium silicate, which is administered alone, reduces 59.17%, list
Solely application PGA reduces 52.88%, and it is bigger to illustrate that this cadmium resistance control agent reduces amplitude to pakchoi overground part cadmium content.
Influence of 2 pouring root type cadmium of the table resistance control agent to the pakchoi overground part index of quality
It is analyzed by table 2 it is found that compared with the control, different component of the present invention is to pakchoi overground part vitamin C, solubility
Sugar, soluble protein content suffer from different degrees of improvement result, and chelating calcium and potassium silicate processing has nitrate content
Certain decreasing trend, and cadmium of the present invention resistance control agent combination is to pakchoi overground part vitamin C, soluble sugar, soluble protein
Also improvement result is obvious for content, although nitrate content is increased not up to significant difference.
In conclusion pakchoi overground part cadmium content can be effectively reduced in pouring root type cadmium resistance control agent combination of the present invention, reduce
Amplitude is 70.30%, while can improve the nutritional quality of pakchoi.
Claims (3)
1. a kind of pouring root type cadmium resistance control agent is reducing the application in the not equal cadmium contents in pakchoi ground, its step are as follows:
A, weigh a certain proportion of Polyurethane-epoxy resin with water is that 1:10 is mixed in mass ratio, stirring to dissolution；
B, a certain proportion of chelating calcium is weighed, is in mass ratio that 1:100 is dissolved with water, is stirred until homogeneous solution；
C, a certain proportion of potassium silicate is weighed, is in mass ratio that 1:100 is dissolved with water, is stirred until homogeneous solution；
D, the chelating calcium dissolved, potassium silicate solution are mixed with Polyurethane-epoxy resin, with about the 60% of required water into
Row constant volume obtains mixture, obtains a kind of pouring root type cadmium resistance control agent；
E, primary every 7 days pouring roots after pakchoi emergence to before mature, altogether three times, each every plant of 10ml；
F, between centered on crop root, radius is no more than 5cm and carries out pouring root；
The water is deionized water；
The cadmium resistance control agent is made of raw material from the following weight:
2. a kind of pouring root type cadmium resistance control agent according to claim 1 is reducing answering in the not equal cadmium contents in pakchoi ground
With, it is characterised in that: the cadmium resistance control agent is made of raw material from the following weight:
3. a kind of pouring root type cadmium resistance control agent according to claim 1 is reducing answering in the not equal cadmium contents in pakchoi ground
With, it is characterised in that: the cadmium resistance control agent is made of raw material from the following weight:
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