CN106881338A - The method for promoting heavy metal lead in enriching plant rye grass absorption soil using interplanting crops garlic bolt - Google Patents
The method for promoting heavy metal lead in enriching plant rye grass absorption soil using interplanting crops garlic bolt Download PDFInfo
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- CN106881338A CN106881338A CN201710107091.2A CN201710107091A CN106881338A CN 106881338 A CN106881338 A CN 106881338A CN 201710107091 A CN201710107091 A CN 201710107091A CN 106881338 A CN106881338 A CN 106881338A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
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Abstract
This application discloses a kind of method that utilization interplanting crops garlic bolt promotes heavy metal lead in enriching plant rye grass absorption soil, different operations are carried out for different degrees of heavy metal lead pollution, soil for lead content more than or equal to 80mg/kg, using the interplanting method for planting rye grass and garlic simultaneously, soil for lead content less than 80mg/kg, using first planting garlic, then the interplanting method of rye grass is planted again, the invention provides a kind of plantation of lead contamination agriculture plantation and reparation aggregative model；Interplanting mode of the present invention can effectively improve absorption of the enriching plant to some heavy metals.
Description
Technical field
The application belongs to field of plant breeding, specifically, is related to a kind of using interplanting crops garlic bolt promotion enriching plant
The method that rye grass absorbs heavy metal lead in soil.
Background technology
With developing rapidly and economic globalization for industrial or agricultural, the pollutant containing heavy metal is big with chemical fertilizer by agricultural chemicals
Amount is applied, and the approach such as the discharge of industrial wastewater and atmospheric sedimentation is entered into soil environment, causes serious soil pollution；
And the lead contamination owner of soil is caused by discarding containing lead accumulator and gasoline anti-knock agent.Soil is not only influenceed containing land pollutant
The physicochemical property of earth can cause tremendous influence with the water level of edaphon and structure to the yield and quality of agricultural product,
So as to further endanger the health of the mankind.The pollution that soil is particularly the heavy metal in agricultural arable land is that agricultural production is smoothed out must
The problem that must be faced, and the reparation of heavy-metal contaminated soil is the inevitable approach for solving the problem.Heavy metal pollution of soil is repaired
Technology mainly include peripheral doses, chemical remediation with it is biological prosthetic.A wherein biological prosthetic important measures are phytoremediations.
Phytoremediation technology has obtained the extensive accreditation of people and has used as a kind of emerging biological prosthetic approach.Repaiied for plant
Multiple research, is generally concentrated at the screening aspect of super enrichment (enrichment) plant, and microorganisms promote with the interaction of plant
Enter plant absorption aspect, and addition chelating agent promotes the aspects such as the absorption of plant heavy metal.It is now rare on plant at present
Promote or weaken the research in terms of plant absorption heavy metal.Under the conditions of the cultivating soil of severe or intermediate pollution, necessarily
Interplanting mode can be effectively promoted the absorption of enriching plant heavy metal；Under the conditions of the cultivating soil of slight pollution, pass through
The crop of the adjustment low enriched character of selection of growing structures transplanted, it is ensured that agricultural production is smoothed out.For agricultural soil
The reparation of the reparation of earth, particularly cultivating soil, if ensureing that minimum level influence agricultural production is the problem that must take into consideration.This
Apparently, the interplanting for entering row crop and enriching plant is a kind of effective measures to sample.
Rye grass is annual gramineae monocotyledon, and its power of regeneration is strong, it is easy to plant, biomass is larger, disease-resistant
Insect pest ability is strong.Have been reported that display rye grass heavy metal has very strong resistance, and heavy metal has accumulation to act on.
Garlic, perennial herb has strong alliaceous odor.Happiness is warm, cold-hartliness is strong, is advisable with the plantation of time spring, summer, autumn and winter.
Geographical distribution garlic is relatively wide respectively in China, is mainly distributed on the ground such as North China, northwest and northeast, is important industrial crops, and
And interplanting garlic is also important biocontrol of plant disease means.
Typically just individually carrying out plantation enriching plant in the past carries out the reparation of polluted heavy metals pollution；Or apply micro- life
Thing preparation or chelating agent promote absorption of the enriching plant to heavy metal-polluted soil, and promote enriching plant pair using crop less
The absorption of heavy metal.Microorganism usually less stable, it is colonized without simple visual；And there is price using chelating agent
Shortcoming expensive, that other pollutions are caused to environment.
As important industrial crops and the garlic of important biological and ecological methods to prevent plant disease, pests, and erosion crop, and important restoring heavy metal-polluted soil by plants
Rye grass, is interplanted in the cultivating soil by lead contamination, influencing each other for the absorption of the two heavy metal lead, is particularly covered
Plant the emphasis that garlic is this research concern to the influence that enriching plant rye grass absorbs heavy metal lead.
The content of the invention
In view of this, the application is directed to above-mentioned problem, there is provided one kind promotes enrichment to plant using interplanting crops garlic bolt
The method that thing rye grass absorbs heavy metal lead in soil.
In order to solve the above-mentioned technical problem, enriching plant rye is promoted using interplanting crops garlic bolt this application discloses one kind
The method that grass absorbs heavy metal lead in soil, the method is carried out for heavy metal in soil lead content more than or equal to 80mg/kg
, comprise the following steps：
Step 1, pretreatment of raw material：Before broadcasting sowing ryegrass seed sowing, ryegrass seed warm water and root-growing agent are soaked,
Pick up and drain, it is standby；Garlic is soaked one day before sowing, it is standby；
Step 2, plantation rye grass：Ryegrass seed after treatment is mixed into upper fine sand to broadcast sowing, seeding method is typically used and opened
The mode of railway carriage or compartment bracing wire drilling is carried out；
Step 3, plantation garlic：After sowing ryegrass seed, the plant of garlic is carried out, insert the garlic clove after immersion during sowing
In burying, it is advisable with micro- dew tip；
Step 4, for heavy metal lead pollution soil, after planting irrigated, keep ground moistening promote germination life
It is long.
Further, ryegrass seed soak time is 5~7h in step 1.
Further, in step 2 application rate between 1.5~2kg/ mus.
Further, it is 40-50cm that spacing in the rows is sowed in step 3.
Enriching plant rye grass is promoted to absorb heavy metal in soil using interplanting crops garlic bolt the invention also discloses one kind
The method of lead, the method is carried out for heavy metal in soil lead content less than 80mg/kg, is comprised the following steps：
Step 1, plantation garlic：The plant of garlic is carried out, by garlic clove insertion soil during sowing, is advisable with micro- dew tip；
Step 2, results garlic：When garlic is harvested, the garlic bolt of commodity difference is retained in every square metre of planting site；Commodity
Poor garlic bolt is the garlic bolt thinner relative to the garlic bolt growing way for harvesting；
Step 3, pretreatment of raw material：Before broadcasting sowing ryegrass seed sowing, ryegrass seed warm water and root-growing agent are soaked,
Pick up and drain, it is standby；
Step 4, garlic plant the ryegrass seed handled well after harvesting, and are after planting irrigated, and keep ground moistening to promote
Enter germination growth.
Further, in step 2 when garlic is harvested, 2-3 plants of garlic bolt is retained in every square metre of planting site.
Further, ryegrass seed soak time is 5~7h in step 3.
Further, application rate is 1.5~2kg/ mus in step 4.
Compared with prior art, the application can be obtained including following technique effect：
1) enriching plant is promoted to absorb the process of heavy metal using crop, the field planting and growth of crop are visible；
2) avoid applying chelating agent promotion enriching plant absorption heavy metal, probably due to chelating agent environment caused in itself
Pollution；And general chelating agent is costly.
3) enriching plant is promoted to absorb the process of heavy metal using crop, crop is generally the crop of low enriched character, should
Interplanting measure is organically combined agricultural production and soil remediation process, is conducive to carrying out agriculture plantation in real process
Repair.
Certainly, any product for implementing the application must be not necessarily required to while reaching all the above technique effect.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please does not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the Ryegrass Growth situation under the potted plant treatment of the application, wherein, A is that garlic interplants rye grass group, and B is single
Solely plant rye grass group.
Specific embodiment
Describe presently filed embodiment in detail below in conjunction with embodiment, thereby to the application how application technology hand
Section can fully understand and implement according to this to solve technical problem and reach the implementation process of technology effect.
Heavy metal lead in a kind of utilization interplanting crops garlic bolt promotion enriching plant rye grass absorption soil of present invention offer
Method, comprises the following steps：
Step 1, pretreatment of raw material：Before broadcasting sowing ryegrass seed sowing, by ryegrass seed warm water and root-growing agent immersion 5
~7h, picks up and drains, standby；Garlic is soaked one day before sowing, it is standby；
Step 2, plantation rye grass：Ryegrass seed after treatment is mixed into upper fine sand to broadcast sowing, application rate is in 1.5~2kg/
Between mu, seeding method is typically carried out by the way of railway carriage or compartment bracing wire drilling is opened；
Step 3, plantation garlic：After sowing ryegrass seed, the plant of garlic is carried out, insert the garlic clove after immersion during sowing
In burying, it is advisable with micro- dew tip；Sowing spacing in the rows is in 40-50cm or so；
Step 4, for severe heavy metal lead pollution soil (Lead In Soil content be more than or equal to 80mg/kg (pH≤5.5)),
After planting irrigated, keep ground moistening to promote germination growth；In the repair process of heavy metal lead pollution soil, profit
The mode for interplanting garlic with rye grass promotes the absorption of rye grass heavy metal lead, strengthens soil remediation effect, and garlic (garlic
Seedling) results sale is not typically carried out, whole process is mainly phytoremediation process.
The present invention also provides a kind of interplanting method for absorbing the light, garlic bolt of moderate heavy metal lead and rye grass, the party
Method is directed to what heavy metal in soil lead content was carried out less than 80mg/kg, comprises the following steps：
Step 1, plantation garlic：The plant of garlic is carried out, by garlic clove insertion soil during sowing, is advisable with micro- dew tip；
Step 2, results garlic：When garlic is harvested, 2-3 plants of garlic bolt is retained in every square metre of planting site；The garlic for being retained
Seedling is the garlic bolt (relative to the garlic bolt for harvesting garlic, thinner garlic bolt) of commodity difference；
Step 3, pretreatment of raw material：Before broadcasting sowing ryegrass seed sowing, by ryegrass seed warm water and root-growing agent immersion 5
~7h, picks up and drains, standby；
Step 4, garlic plant the ryegrass seed handled well after harvesting, application rate is the sowing between 1.5~2kg/ mus
After irrigated, keep ground moistening promote germination growth, carry out heavy metal in soil using enriching plant rye grass
The reparation of lead contamination.
For the reparation in agricultural arable land, especially gently, (heavy metal in soil lead content is small for moderate heavy metal lead pollution soil
In 80mg/kg), it is general to require to avoid or reduce the influence to agricultural production, it is ensured that the income of peasant, so require to agriculture
Industry pattern of farming carries out necessary adjustment, i.e.,：Screen the crop varieties of low absorption (low enrichment) heavy metal (for example：Garlic).
It is divided into two stages of agricultural production and phytoremediation during whole operation.Garlic bolt sows rye grass and enters soil remediation after harvesting
Stage；When being harvested to garlic bolt, in order to promote the absorption of heavy metal in enriching plant Soil As Influenced By Ryegrass Plants using garlic, protect
Every square metre of the 2-3 plants of garlic bolt that have is demonstrate,proved, the garlic bolt of reservation is the garlic bolt for retaining commodity difference；This method whole process is garlic bolt life
Produce the combination (agricultural production and the combination of soil remediation process) repaired with Soil As Influenced By Ryegrass Plants；Repairing earth backing
While earth, moreover it is possible to carry out certain agricultural production.
The severe heavy metal lead pollution soil treatment of embodiment 1 (heavy metal in soil lead content is more than or equal to 80mg/kg)：
The processing method is comprised the following steps：
Step 1, pretreatment of raw material：Before broadcasting sowing ryegrass seed sowing, by ryegrass seed warm water and root-growing agent immersion 5
~7h, picks up and drains, standby；Garlic is soaked one day before sowing, it is standby；
Step 2, plantation rye grass：Ryegrass seed after treatment is mixed into upper fine sand to broadcast sowing, application rate is in 1.5~2kg/
Between mu, seeding method is typically carried out by the way of railway carriage or compartment bracing wire drilling is opened；
Step 3, plantation garlic：After sowing ryegrass seed, the plant of garlic is carried out, insert the garlic clove after immersion during sowing
In burying, it is advisable with micro- dew tip；Sowing spacing in the rows is in 40-50cm or so；
Step 4, for heavy metal lead pollution soil, after planting irrigated, keep ground moistening promote germination life
It is long；In the repair process of heavy metal lead pollution soil, the mode using rye grass interplanting garlic promotes rye grass heavy metal
The absorption of lead, strengthens soil remediation effect, and garlic (garlic bolt) does not typically carry out results sale, and whole process is mainly plant
Repair process.
Embodiment 2 is slight, moderate heavy metal lead pollution soil treatment (heavy metal in soil lead content is less than 80mg/kg)：
The processing method is comprised the following steps：
Step 1, plantation garlic：The plant of garlic is carried out, by garlic clove insertion soil during sowing, is advisable with micro- dew tip；
Step 2, results garlic：When garlic is harvested, 2-3 plants of garlic bolt is retained in every square metre of planting site；The garlic for being retained
Seedling is the garlic bolt of commodity difference；
Step 3, pretreatment of raw material：Before broadcasting sowing ryegrass seed sowing, by ryegrass seed warm water and root-growing agent immersion 5
~7h, picks up and drains, standby；
Step 4, garlic plant the ryegrass seed handled well after harvesting, application rate is the sowing between 1.5~2kg/ mus
After irrigated, keep ground moistening promote germination growth.
Comparative example 1 individually plants rye grass
Ryegrass seed after treatment is mixed into upper fine sand to broadcast sowing, application rate is the seeding method one between 1.5~2kg/ mus
As carried out by the way of railway carriage or compartment bracing wire drilling is opened.
For the influence for preventing other plants from being tested to this, this experiment carries out (Fig. 1) in the way of potted plant experiment.Cultivation soil
It is cadmium pollution cultivating soil.After plantation 30d, the aerial part of different disposal group rye grass and garlic is gathered in respectively, after harvesting
Rye grass and garlic sprouts wrapped with brown paper, being placed in 105 DEG C of drying box carries out the de-enzyme treatment of 30min, treats at de-enzyme
The drying box that raw rye grass and garlic sprouts are placed on 75 DEG C again is dried into 24h after reason.
Sample is addressed into third party inspection center carries out the measure of heavy metal (lead) content in plant.Test event：Lead,
This research is also determined to the cadmium content in plant；Test equipment：ICP-OES；Test foundation：DB53/T 288-2009
Pb in food, arsenic, iron, calcium, zinc, aluminium, sodium, magnesium, boron, manganese, copper, barium, titanium, strontium, tin, cadmium, chromium, the measure of content of vanadium.
1.3 statistical analyses
Data process＆analysis are carried out using Excel2010 softwares.
2 results and analysis
In the interplanting experiment of garlic and rye grass, the dry weight and cadmium lead content of different disposal group rye grass aerial part are such as
Shown in table 1.
Dry weight and cadmium content under 1 two kinds for the treatment of of table
Result shows：Rye grass aerial part dry weight to embodiment 2 and comparative example 1 is contrasted, (the garlic of embodiment 2
Interplanting rye grass) 0.068mg is reduced than comparative example 1 (individually planting rye grass), reduced rate is 12.62%；To aerial part
The content of cadmium is contrasted in dry, and embodiment 2 (garlic interplants rye grass) is reduced than comparative example 1 (individually planting rye grass)
1.1437 × 10-3Mg, reduced rate is 23.92%；Content to lead in aerial part dry is contrasted, and embodiment 2 is (big
Garlic interplants rye grass) increased 1.1371 × 10 than comparative example 1 (individually planting rye grass)-3Mg, increment rate is 133.15%.From
The result of experiment sees that it is different that garlic interplants effect of the rye grass to rye grass absorption heavy metal cadmium and lead, and it can be certain
Suppress absorption of the rye grass to cadmium in degree, but absorption of the rye grass to lead can be greatly facilitated.
Experiment is further determined to heavy metal cadmium in cultivating soil and garlic (interplanting) and lead, measurement result such as table
Shown in 2.From in terms of the result of experiment, in this experiment for heavy metal cadmium, with maximum ground when rye grass is individually planted
Top separating/enriching coefficient (0.75)；For heavy metal lead, it is enriched with maximum aerial part during rye grass interplanting garlic
Coefficient (0.54).Test result indicate that, different planting patterns can be selected according to the different pollution condition of soil.
The content of heavy metal cadmium and lead in the soil of table 2 and garlic
In certain planting environment, garlic interplanting rye grass, on the one hand exist garlic and rye grass compete nutrition and
The phenomenon in space, so as to cause the reduction of Ryegrass Growth amount, that is to say, that interplanting may result in subtracting for enriching plant growth
It is few.But interplanting increased the diversity of species, multifarious species make plant structure (phytoremediation system) more stable；The opposing party
The certain interplanting mode in face promotes the absorption of enriching plant heavy metal, can offset the reduction heavy metal because increment
The influence of total amount is absorbed, so as to ensure repairing effect.
The secretion of root system of plant can influence the quantity and structure of rhizosphere microorganism, and it also must be to heavy metal in soil
Activity or existence produce certain influence, so as to also influence the absorption of plant heavy metal.It can be seen that, plant and plant it
Between interact (direct and indirect effect), can to a certain extent influence plant heavy metal absorption.In actual reparation
During, it is difficult to realize in an a kind of plant of the single growth in region, and more rich plant structure is conducive to plant
Growth and the sound development of ecosystem.Certain interplanting mode may reduce the increment of enriching plant, but accumulation ability
Raising can effectively offset because increment reduce heavy metal absorb total amount influence, so as to ensure good repairing effect.
It is therefore necessary to study in a specific phytoremediation place, plants against plant absorbs the influence of heavy metal.
Interplanting crops are a kind of conventional plantation measures, have important effect in agricultural production.In our current research, greatly
Garlic interplanting enriching plant rye grass can effectively lower the absorption of rye grass heavy metal cadmium, and reduced rate is 23.92%, but its
The absorption of rye grass heavy metal lead can be strongly improved, increment rate is 133.15%.In this experiment for heavy metal cadmium
Speech, with maximum aerial part concentration coefficient (0.75) when rye grass is individually planted；For heavy metal lead, rye grass set
Aerial part concentration coefficient (0.54) with maximum when planting garlic.Certain interplanting mode can be effective from terms of the result of research
Improve absorption of the enriching plant to some heavy metals.
Experiment proves that garlic interplanting rye grass can be greatly enhanced the absorption of heavy metal lead in Soil As Influenced By Ryegrass Plants.Garlic has
There is preferable commodity value, and be also commonly used for the plant of biological control.
Described above has shown and described some preferred embodiments of invention, but as previously described, it should be understood that invention is not
Form disclosed herein is confined to, the exclusion to other embodiment is not to be taken as, and can be used for various other combinations, modification
And environment, and can be carried out by the technology or knowledge of above-mentioned teaching or association area in invention contemplated scope described herein
Change.And the change and change that those skilled in the art are carried out do not depart from the spirit and scope of invention, then all should be in the appended power of invention
In the protection domain that profit is required.
Claims (8)
1. a kind of utilization interplanting crops garlic bolt promotes the method that enriching plant rye grass absorbs heavy metal lead in soil, its feature to exist
In the method is carried out for heavy metal in soil lead content more than or equal to 80mg/kg, is comprised the following steps：
Step 1, pretreatment of raw material：Before broadcasting sowing ryegrass seed sowing, ryegrass seed warm water and root-growing agent are soaked, picked up
Drain, it is standby；Garlic is soaked one day before sowing, it is standby；
Step 2, plantation rye grass：Ryegrass seed after treatment is mixed into upper fine sand to broadcast sowing, seeding method is typically used opens railway carriage or compartment drawing
The mode that lines are broadcast is carried out；
Step 3, plantation garlic：After sowing ryegrass seed, the plant of garlic is carried out, the garlic clove after immersion is inserted into soil during sowing
In, it is advisable with micro- dew tip；
Step 4, for heavy metal lead pollution soil, after planting irrigated, keep ground moistening promote germination growth.
2. utilization interplanting crops garlic bolt according to claim 1 promotes enriching plant rye grass to absorb heavy metal lead in soil
Method, it is characterised in that in step 1 ryegrass seed soak time be 5~7h.
3. utilization interplanting crops garlic bolt according to claim 1 promotes enriching plant rye grass to absorb heavy metal lead in soil
Method, it is characterised in that application rate is between 1.5~2kg/ mus in step 2.
4. utilization interplanting crops garlic bolt according to claim 1 promotes enriching plant rye grass to absorb heavy metal lead in soil
Method, it is characterised in that in step 3 sow spacing in the rows be 40-50cm.
5. a kind of utilization interplanting crops garlic bolt promotes the method that enriching plant rye grass absorbs heavy metal lead in soil, its feature to exist
In the method is carried out for heavy metal in soil lead content less than 80mg/kg, is comprised the following steps：
Step 1, plantation garlic：The plant of garlic is carried out, by garlic clove insertion soil during sowing, is advisable with micro- dew tip；
Step 2, results garlic：When garlic is harvested, the garlic bolt of commodity difference is retained in every square metre of planting site；Commodity difference
Garlic bolt is the garlic bolt thinner relative to the garlic bolt growing way for harvesting garlic；
Step 3, pretreatment of raw material：Before broadcasting sowing ryegrass seed sowing, ryegrass seed warm water and root-growing agent are soaked, picked up
Drain, it is standby；
Step 4, garlic plant the ryegrass seed handled well after harvesting, and are after planting irrigated, and keep ground moistening to promote to plant
Sub- germinating growth.
6. utilization interplanting crops garlic bolt according to claim 5 promotes enriching plant rye grass to absorb heavy metal lead in soil
Method, it is characterised in that in step 2 harvest garlic when, in every square metre of planting site retain 2-3 plants of garlic bolt.
7. utilization interplanting crops garlic bolt according to claim 5 promotes enriching plant rye grass to absorb heavy metal lead in soil
Method, it is characterised in that in step 3 ryegrass seed soak time be 5~7h.
8. utilization interplanting crops garlic bolt according to claim 5 promotes enriching plant rye grass to absorb heavy metal lead in soil
Method, it is characterised in that in step 4 application rate be 1.5~2kg/ mus.
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| CN108284129A (en) * | 2017-09-27 | 2018-07-17 | 湖北农谷畅响土壤修复科技股份有限公司 | A kind of method of plants interplanting repairing heavy metal pollution agricultural land soil |
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