CN106576809A - Method for lowering heavy-metal lead-cadmium content of Ipomoea aquatica - Google Patents
Method for lowering heavy-metal lead-cadmium content of Ipomoea aquatica Download PDFInfo
- Publication number
- CN106576809A CN106576809A CN201611126135.8A CN201611126135A CN106576809A CN 106576809 A CN106576809 A CN 106576809A CN 201611126135 A CN201611126135 A CN 201611126135A CN 106576809 A CN106576809 A CN 106576809A
- Authority
- CN
- China
- Prior art keywords
- soil
- caulis
- heavy metal
- water
- cadmium content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
Abstract
The invention discloses a method for lowering heavy-metal lead-cadmium content of Ipomoea aquatica. The method is characterized by comprising the steps: applying 5g to 8g of lime or bio-carbon granules to soil per kilogram in a full basal application manner, then, carrying out uniform turning so as to uniformly mix the lime or bio-carbon granules with contaminated soil, carrying out water drenching, carrying out balancing for 20 days, and then, carrying out sowing or transplanting, wherein a water layer of 1cm to 2cm is always kept on a soil surface during the growth of the Ipomoea aquatica. According to the method, under the condition of Ipomoea aquatica water-cultivation, the actions of lowering the heavy-metal lead-cadmium content of vegetables and improving the yield and quality of the vegetables can be better achieved compared with dry cultivation, so that the method can be extensively applied to the remediation of soil of lead-cadmium medium-/light-polluted or heavy-polluted acidic vegetable plots.
Description
Technical field
The present invention relates to heavy metal in vegetable safety planting technology and soil amelioration techniques, more particularly to a kind of reduction Caulis et Folium Ipomoeae aquaticae
The method of lead cadmium content, to reduce heavy metal lead cadmium pollution soil in Caulis et Folium Ipomoeae aquaticae pollution risk.
Background technology
Lead (Pb) and cadmium (Cd) are the toxic heavy metal received much concern in environment, its Farmland Soil Pollution for being brought and vegetable
Dish heavy metals exceeding standard is particularly problematic.Because available state ratios of the Cd in soil is higher, activity is stronger, it is easy to by crop
Absorb and contaminated food chain, jeopardize human health；And Pb is of many uses due to its, pollute most rapid.Vegetable is daily as people
The maximum agricultural product type of amount, reduces its heavy metal pollution risk and ensures that vegetables quality is particularly important safely.Its
In, Caulis et Folium Ipomoeae aquaticae as a kind of long vegetable of cultivation history, with abundant germ plasm resource and more kind quantity.Its growth
Hurry up, strong adaptability, by drought plant and water plant two kinds of planting types can grow very well.And water spinach is used as the height of heavy metal pollution
Risk kind, due to the severe contamination of water source and soil in recent years so that the cultivation of this very popular aquatic leaf vegetables and quality
Safety receives strong influence, and to the healthy and life security of consumer hidden danger is brought, it has also become society extensively closes
The problem of note.
The method for administering heavy metal pollution of soil both at home and abroad at present can be divided mainly into two big class：One refers to by engineering disposal
Measure, i.e., the method repaired by soil moved in improve the original, soil removal and replacement, isolation, drip washing and electricity is directly acted on contaminated soil layer and realizes improvement and repair
Multiple, its repairing effect is good, it is adaptable to nearly all contaminated soil type, but it is high to invest excessive rehabilitation cost, it is difficult to extensive examination
With；Two is to change occurrence patterns of the heavy metal element in soil by biological, chemistry or agronomic measures, stablizes its active life
Thing available state, though its total metals can not be reduced substantially, can effectively prevent heavy metal biological available state in ecological environment
Migration and conversion, contain its pass through food chain, subsoil water etc. form be detrimental to health., dirt in short supply for cultivated land resource
The relatively light surrounding city farm environment of dye degree, agronomy regulation measure is because its is simple, it is excellent not interrupt agricultural production etc.
More property and receive much concern.More and more it was verified that taking suitable agronomy regulation measure (as changed planting type, addition
Modifying agent etc.) chance that heavy metal enters human body by food chain is effectively reduced, it is on the light intermediate pollution soil of heavy metal
Persistently carry out vegetable safety and produce most economical effective approach.
Under different planting types, soil moisture content and state, pH value, organic matter, redox state etc. are
Change, so as to affect the biological effectiveness and transportion and transformation of heavy metal.Many researchs show, moisture can notable shadow
Ring plant in-vivo heavy metal content.Water regime of soil can strongly affect the reallocation of heavy metal in soil.Submerging treatment soil
Heavy metal (particularly Pb and Cd) is tended to be changed into ferrimanganic combination from the easily extraction state such as exchange state and carbonate combine state in earth
The more stable form such as state and organically-bound.In organic matter and the more rich soil of sulfur-containing compound, waterflooding can make Fe
Competitive Adsorption effect and the co-precipitation of S and Cd Deng metal ion and Cd is strengthened, and makes the biological effectiveness of Cd in soil
Substantially reduce.But the research for reducing crops in-vivo heavy metal content by regulating and controlling soil water content is less, at present only
A small amount of document report soil moisture absorbs to Oryza sativa L., Semen Maydiss, Fructus Hordei Vulgaris etc. the impact of heavy metal cadmium.
In addition, chemical improvement agent is used as a kind of based technique for in-situ remediation of the controlling area-source pollution of economical and efficient, because of its cost
It is cheap, easy to implement, meet the needs that China's sustainable agriculture sends out exhibition, development recently is very fast.Calx is used as a kind of effective
On the one hand modifying agent, liming can improve soil pH, promote heavy metal generation carbonate combine state or sulfide combined state heavy
Form sediment to reduce its biological effectiveness, reduce the injury of heavy metal on plants；On the other hand, pH regulator to neutrality is conducive to plant to inhale
Other nutrient elements are received, promotes plant growing.Charcoal is widely used in greenhouse as a kind of effective soil conditioner
The aspects such as gas abatement, contaminated soil remediation and biological effectiveness regulation and control.At present, planting type is combined with chemical improvement agent
The research for getting up to control heavy metal pollution risk is also more rare, this measure to by heavy metal pollution risk it is higher and have concurrently it is aquatic and
It is particularly important that the water spinach of the raw habit of drought launches Safety control technology.With carrying for expanding economy and living standards of the people
Height, consumer is to the quality safety of the agricultural product such as vegetable also pay attention to day by day.But farmland soil heavy metals pollution problem is increasingly tight
Weight, makes the areas such as script cultivated land resource Pearl River Delta just very in short supply face more challenges.From adjustment vegetable growing mode with
And active remediation Heavy-metal Polluted Environment improves two angles of planting conditions in the vegetable place of production and sets out, inquiring into heavy metal pollution affects
Under vegetable safety production control technology, to improve Cultivated Land Use rate while ensure that agricultural product quality and safety seems particularly
It is important, it is significant to ensureing people's health and agro based economic development.
The content of the invention
It is an object of the invention to overcome problem present on existing Caulis et Folium Ipomoeae aquaticae lead cadmium pollution improvement, there is provided one kind reduces Caulis et Folium Ipomoeae aquaticae
The method of middle heavy metal lead cadmium content, to reduce heavy metal lead cadmium pollution soil in Caulis et Folium Ipomoeae aquaticae pollution risk.
To achieve these goals, the present invention creatively proposes following technical scheme：
The method of heavy metal lead cadmium content, according to every kilogram of soil 5-8 gram of Calx or charcoal are applied in a kind of reduction Caulis et Folium Ipomoeae aquaticae
Granule whole base is applied, and then carries out turning over even, makes Calx or charcoal granule mix homogeneously with contaminated soil, water drenching, balance 20 days
Can be sowed or be transplanted afterwards；In Caulis et Folium Ipomoeae aquaticae growth period, Tu Mianshang remains 1～2cm water layers.
Charcoal of the present invention is prepared by procedure below：Dry Oryza sativa L. bar is cut into into the segment of 10～20cm
Afterwards, it is placed in vacuum box type atmosphere furnace, is passed through N2As shielding gas, constant temperature carbonization after being warming up to 600 DEG C with 10 DEG C/min speed
1.5-2h, after being cooled to room temperature, it is the charcoal granule by 20 mesh sieve holes to grind particle diameter.
Calx of the present invention is analysis pure cerium hydroxide calcium, wherein Ca (OH)2Content >=95.0%, hydrochloric acid insoluble substance≤
0.05%, chloride (Cl)≤0.01%, sulfate is (with SO4Meter)≤0.2%, ferrum≤0.01%, heavy metal (in terms of Pb)≤
0.002%, magnesium salt and alkali metal (MgO)≤0.5%, precipitate≤0.25% in ammonium hydroxide.
The Caulis et Folium Ipomoeae aquaticae kind is blue or green stalk great Ye water spinaches and Thailand Folium Salicis Babylonicae water spinach.
The beneficial effect of technical solution of the present invention is：
The modifying agent of the present invention, in the case where Caulis et Folium Ipomoeae aquaticae water is cultivated, compared with can preferably reduce vegetable under dry farming cultivation
Dish heavy metal lead cadmium content, improves the effect of vegetable yields and quality, can be widely used for the pollution of lead cadmium mild or moderate or serious pollution
Acid vegetable field soil reparation.
The charcoal that the present invention is used, adopts Oryza sativa L. bar common in agricultural wastes for raw material, and raw material is sufficient, technique letter
Single, easy to operate, easily production and enforcement, change traditional Caulis et Folium Ipomoeae aquaticae dry farming mode and make mode for water, and control expense is relatively low, are a kind of
Safely, effectively, lasting Heavy Metal Pollution Control method, in addition, charcoal is carried as a kind of environmentally friendly soil conditioner
A kind of preferable agricultural wastes recycling approach is supplied.
Description of the drawings
Fig. 1 is two kinds grown in lead cadmium pollution soil for examination Caulis et Folium Ipomoeae aquaticae kind biomass of individual tree situation of change；
Fig. 2 is the two kinds of lead content situations of change for examination Caulis et Folium Ipomoeae aquaticae kind grown in lead cadmium pollution soil；
Two kinds of cadmium content situations of change for examination Caulis et Folium Ipomoeae aquaticae kind that Fig. 3 grows in lead cadmium pollution soil.
Specific embodiment
Embodiment 1：Charcoal reduces the potted plant of Caulis et Folium Ipomoeae aquaticae lead cadmium content
A kind of modifying agent for reducing Caulis et Folium Ipomoeae aquaticae pollution risk in heavy metal lead cadmium pollution soil, is prepared by procedure below：
Dry Oryza sativa L. bar is cut into after the segment of 15cm, is placed in vacuum box type atmosphere furnace, be passed through N2As shielding gas, with 10 DEG C/
Min speed be warming up to 600 DEG C after constant temperature carbonization 2h, after being cooled to room temperature, it is charcoal by 20 mesh sieve holes to grind particle diameter
Grain.
Pb in Soil, cadmium pollution are horizontally placed to 400mgkg-1And 5.0mgkg-1.6 grams of lifes are applied according to every kilogram of soil
Thing charcoal granule whole base is applied, and then carries out turning over even, makes charcoal mix homogeneously with contaminated soil, and water drenching, balance are after 20 days
Sowed or transplanted.It is hollow from 2 kinds of commercially available common Caulis et Folium Ipomoeae aquaticae (Ipomoea aquatica Forsk) kind green grass or young crops stalk great Ye
Dish and Thailand Folium Salicis Babylonicae water spinach.30 seeds that health even one is respectively selected from for examination Caulis et Folium Ipomoeae aquaticae kind are sown in basin, treat seedling length
During to 5 true leaves, thinning retains 7 plants per basin, and period is according to weather and plant growing situation regular watering.In its growth period,
1～2cm water layers are remained on native face.Growth is sampled after 40 days after height of seedling is more than 35cm.
As shown in Fig. 1,2,3, the lead cadmium content of green grass or young crops stalk great Ye water spinaches reduces respectively 9.84% and 43.43%, Thailand
The lead cadmium content of Folium Salicis Babylonicae water spinach reduces respectively 52.30% and 56.35%.And the biomass of individual tree difference of two Caulis et Folium Ipomoeae aquaticae kinds
Increased 29.34% and 82.09%.In the abscissa of each figure, 1 represents blue or green stalk great Ye water spinaches, and 2 to represent Thailand's Folium Salicis Babylonicae hollow
Dish；Not add modifying agent to process, B is charcoal to CK, and L is Calx.
Embodiment 2：Calx reduces the potted plant of Caulis et Folium Ipomoeae aquaticae lead cadmium content
It is analysis pure cerium hydroxide calcium, wherein Ca (OH) from Calx2Content >=95.0%, hydrochloric acid insoluble substance≤0.05%,
Chloride (Cl)≤0.01%, sulfate is (with SO4Meter)≤0.2%, ferrum≤0.01%, heavy metal (in terms of Pb)≤0.002%,
Magnesium salt and alkali metal (MgO)≤0.5%, precipitate≤0.25% in ammonium hydroxide.
Pb in Soil, cadmium pollution are horizontally placed to 400mgkg-1And 5.0mgkg-1.6 grams of stones are applied according to every kilogram of soil
Grey whole base is applied, and then carries out turning over even, makes Calx mix homogeneously with contaminated soil, and water drenching, balance can be sowed after 20 days
Or transplant.From 2 kinds of commercially available common Caulis et Folium Ipomoeae aquaticae kind green grass or young crops stalk great Ye water spinaches and Thailand Folium Salicis Babylonicae water spinach.From for examination Caulis et Folium Ipomoeae aquaticae kind
In respectively select health even one 30 seeds be sown in basin, when seedling grows to 5 true leaves, thinning, per basin retain 7 plants, period
According to weather and plant growing situation regular watering.In its growth period, Tu Mianshang remains 1～2cm water layers.Growth 40 days
After after height of seedling is more than 35cm sample.
As shown in Fig. 1,2,3, under the conditions of Pb in Soil cadmium pollution, add lead cadmium in 2 Caulis et Folium Ipomoeae aquaticae kinds of lime treatment and contain
Measure and do not add the Caulis et Folium Ipomoeae aquaticae lead cadmium content that modifying agent is processed all to be decreased obviously, wherein, the lead cadmium content of green grass or young crops stalk great Ye water spinaches is distinguished
40.16% and 35.65% is reduced, the lead cadmium content of Thailand Folium Salicis Babylonicae water spinach reduces respectively 31.59% and 40.02%.And
The biomass of individual tree of two Caulis et Folium Ipomoeae aquaticae kinds increased respectively 2.15%～6.76%.
To sum up, the Caulis et Folium Ipomoeae aquaticae yield that the present invention is planted to lead cadmium combined pollution soil can effectively reduce its lead without negative interaction
Cadmium pollution risk.
Claims (4)
1. it is a kind of reduce Caulis et Folium Ipomoeae aquaticae in heavy metal lead cadmium content method, it is characterised in that：5-8 gram of Calx is applied according to every kilogram of soil
Or charcoal granule whole base is applied, and then carries out turning over even, makes Calx or charcoal granule mix homogeneously with contaminated soil, water drenching,
Balance can be sowed or transplanted after 20 days；In Caulis et Folium Ipomoeae aquaticae growth period, Tu Mianshang remains 1～2cm water layers.
2. it is according to claim 1 it is a kind of reduce Caulis et Folium Ipomoeae aquaticae in heavy metal lead cadmium content method, it is characterised in that：The life
Thing charcoal is prepared by procedure below：Dry Oryza sativa L. bar is cut into after the segment of 10～20cm, vacuum box type atmosphere furnace is placed on
It is interior, it is passed through N2Used as shielding gas, constant temperature carbonization 1.5-2h, after being cooled to room temperature, grinds after being warming up to 600 DEG C with 10 DEG C/min speed
Abrasive particle footpath is the charcoal granule by 20 mesh sieve holes.
3. it is according to claim 1 it is a kind of reduce Caulis et Folium Ipomoeae aquaticae in heavy metal lead cadmium content method, it is characterised in that：Described
Calx is analysis pure cerium hydroxide calcium.
4. it is according to claim 1 it is a kind of reduce Caulis et Folium Ipomoeae aquaticae in heavy metal lead cadmium content method, it is characterised in that：The water spinach
Vegetable kind is blue or green stalk great Ye water spinaches and Thailand Folium Salicis Babylonicae water spinach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126135.8A CN106576809A (en) | 2016-12-09 | 2016-12-09 | Method for lowering heavy-metal lead-cadmium content of Ipomoea aquatica |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126135.8A CN106576809A (en) | 2016-12-09 | 2016-12-09 | Method for lowering heavy-metal lead-cadmium content of Ipomoea aquatica |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106576809A true CN106576809A (en) | 2017-04-26 |
Family
ID=58597736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611126135.8A Pending CN106576809A (en) | 2016-12-09 | 2016-12-09 | Method for lowering heavy-metal lead-cadmium content of Ipomoea aquatica |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106576809A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107801461A (en) * | 2017-11-23 | 2018-03-16 | 中国科学院南京土壤研究所 | Rice field base applies passivating material drop living imposed with tillering stage and combining for zinc fertilizer antagonism drops cadmium method |
| CN108641722A (en) * | 2018-05-22 | 2018-10-12 | 江西农业大学 | A kind of soil improvement method of rare-earth tailing |
| CN113848289A (en) * | 2021-12-01 | 2021-12-28 | 广东省农业科学院农业质量标准与监测技术研究所 | Aquatic vegetable quality evaluation method and system based on production place environment data |
-
2016
- 2016-12-09 CN CN201611126135.8A patent/CN106576809A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107801461A (en) * | 2017-11-23 | 2018-03-16 | 中国科学院南京土壤研究所 | Rice field base applies passivating material drop living imposed with tillering stage and combining for zinc fertilizer antagonism drops cadmium method |
| CN108641722A (en) * | 2018-05-22 | 2018-10-12 | 江西农业大学 | A kind of soil improvement method of rare-earth tailing |
| CN113848289A (en) * | 2021-12-01 | 2021-12-28 | 广东省农业科学院农业质量标准与监测技术研究所 | Aquatic vegetable quality evaluation method and system based on production place environment data |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103922846B (en) | Saline-alkali soil improvement method | |
| CN101627706B (en) | Vegetable seedling substrate compounded by earthworm casts and preparation method thereof | |
| CN104813885B (en) | Production method for cadmium-polluted rice land governing and rice cadmium reduction | |
| CN104446767A (en) | Method for preparing seaweed-containing special fertilizer for flowers and plants | |
| CN105344708A (en) | Remediation method for heavy metal contaminated soil of saline and alkaline land | |
| CN102986513A (en) | Soilless culture substrate for fruits and vegetables | |
| CN103518506A (en) | Planting method for root of red-rooted salvia | |
| CN104782463A (en) | Eco-organic type soilless culture technology | |
| CN102992840A (en) | Special seedling medium for solanaceous vegetables | |
| CN103621279A (en) | Cucumber cultivation method | |
| CN105290103A (en) | Method for utilizing cadmium-resisting fungus aspergillus aculeatus for promoting festuca arundinacea to remedy cadmium contaminated soil | |
| CN103460954A (en) | Early-stage culture method for white gourd | |
| KR20180079227A (en) | Method for purifying heavy metal contaminated soil | |
| CN108184567A (en) | A kind of arid, semiarid zone tomato seeds nursery implantation methods | |
| CN107318448A (en) | A kind of cultural method rich in micro- chrysanthemum | |
| CN110156541A (en) | A kind of restorative procedure of secondary salinization soil | |
| CN104025874A (en) | Organic planting method of celery | |
| CN107155595A (en) | A kind of implantation methods of shed for pepper | |
| CN104620834A (en) | Selenium-enriched cultivation method for leading romaine lettuce | |
| CN107484601A (en) | A kind of implantation methods for improving walnut volume increase | |
| CN106576809A (en) | Method for lowering heavy-metal lead-cadmium content of Ipomoea aquatica | |
| CN108476877A (en) | A kind of ecology planting method improving eggplant disease resistance ability | |
| CN109168846A (en) | The ecology planting method in tea place | |
| CN108083931A (en) | A kind of soilless culture substrate of organic strawberry | |
| CN106171746A (en) | The plantation of a kind of salt-soda soil and the method transplanting Paulownia |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170426 |