CN108012738A - A kind of method that road dust lead and cadmium pollution tea place are obstructed with hedgerow - Google Patents
A kind of method that road dust lead and cadmium pollution tea place are obstructed with hedgerow Download PDFInfo
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- CN108012738A CN108012738A CN201711267298.2A CN201711267298A CN108012738A CN 108012738 A CN108012738 A CN 108012738A CN 201711267298 A CN201711267298 A CN 201711267298A CN 108012738 A CN108012738 A CN 108012738A
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- tea
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- 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
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- 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
- A01G13/00—Protecting plants
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
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- Cultivation Of Plants (AREA)
Abstract
The present invention provides a kind of method that road dust lead and cadmium pollution tea place are obstructed with hedgerow, and larger in vehicle flowrate, there is tea place on the highway side that the dust and vehicle exhaust of generation are denseer.In the hedgerow of roadside planting certain altitude, for obstructing dust, so as to effectively prevent the pollution of lead and cadmium for tea place in dust.The method of the present invention is protected beneficial to tea garden environment, beneficial to guarantee quality and safety of tea.
Description
Technical field
The invention belongs to Tea Science field, it is related in the margin of roads plantation hedgerow in navigating within tea place, to obstruct in dust
The pollution of lead and cadmium for tea place.
Background technology
" seven necessities of life, fuel sauce vinegar tea ", tea part indispensable in living into us.Agricultural product quality
Safety problem is widely known, and quality and safety of tea problem instantly also causes the close attention of tea people.Tealeaves heavy metal pollution
One of main problem as tealeaves agricultural product quality and safety.The primary pollution source of tealeaves heavy metal has road dust, on highway
Vehicle exhaust, atmospheric sedimentation, Industrial " three Waste " and soil acidification and dissociate heavy metal, dust and automobile wherein on highway
Tail gas often produces, and can pollute often, it is necessary to researches and develops and suitable overcome technology and put into practice.
The content of the invention
The object of the present invention is to provide a kind of method that road dust lead and cadmium pollution tea place are obstructed with hedgerow, by following
Step is realized：Between tea place to be isolated and highway, dense planting is highly the tree of 2.5m~3.3m, sets the intensive phase between tree
Even, green hedge is formed, the tea place ground and highway subgrade are contour.
The seeds of the green hedge of composition are the seeds for being suitable for acid soil, the pH scopes 3.5~6.5 of acid soil, and
Seeds do not influence for tea leaf quality, Tea Pest Fauna, and seeds may be selected such as pine tree, Chinese ilex, Chinese littleleaf box and azalea.
Preferably, the tea place tea tree is highly less than 1.2m, such as 0.9m.The tree with tree the distance between be less than
0.8m, is connected to form green hedge, highly preferred green hedge is 3m~3.3m with intensive.
Cadmium in air is mostly derived from industrial production, its chemical form has cadmium sulfate, cadmium sulfide, cadmium oxide and caddy
Deng being present in solid particulate matter trickle in air more.Vehicle is more on township road, navigates within agriculture district and industrial area, also can
Bring cadmium.Also the cadmium content of the invention for disclosing roadside tealeaves is significantly more than the cadmium content of tea place center tealeaves, by carrying out this hair
Bright method, hedgerow truly have barrier dust lead and every effect.
Embodiment
The present invention is further described in conjunction with the embodiments.
Embodiment
1 materials and methods
1.1 experimental field overviews
At the emerging town fresh tea leaves market 3km in Zhejiang Province Songyang County, one section of township road is selected, have a lot of social connections 5m, and road both sides are all
Tea place, tea place ground and roadbed are contour.Tea tree breed is that black ox is early, single file hedge planting, the high 90cm of tea tree.In mid-July, 2014 exists
Continuous 4 200m sections are selected in road side, each section to tea place extension 300m as an area, be denoted as respectively 1. area, 2. area,
3. area and 4. area.2 months 2015 respectively 1. area, 2. area and 3. the young pines of area's roadside planting 1.5m, 2.0m and 3.0m high make
For hedgerow, pine tree branches and leaves are intensive, can block dust, are known as 1.5m areas, 2.0m areas, 3.0m areas and CK areas, and be always maintained at
Pine tree height.
1.2 samples and analysis
In mid-July, 2014, in mid-July, 2016, respectively in every offset from adopting 1 at roadside 0m, 50m, 100m and 200m
5th leaf under the 1 leaf tea tip of aphid, bud, detects lead and cadmium content.Detection method reference literature [1] and [2], by Tea Samples at 80 DEG C
Drying, crushes.Sample 1.0g is weighed, is placed in 30ml porcelain crucibles, crucible, which is placed on heating on electric hot plate, carbonizes sample, when sample
Smoke disperses when product carbonize, and sample moves into high-temperature electric resistance furnace.500 ± 25 DEG C, constant temperature 2h are to slowly warm up to, is in canescence to sample,
Cooling, adds 1:1HNO32mL, dissolves by heating, then is cleaned with deionized water, and cleaning solution enters in 25mL volumetric flasks, and constant volume is to be measured.
Lead content in solution is measured with inductively coupled plasma atomic emission spectrometer (ICP-OES), and model IRIS/AP is beautiful
Power ＆ light company of state produces.During measure Quality Control is used as by the use of national standard reference material-tealeaves standard sample GBW 07605 (GSV-4)
Standard, to ensure the accuracy of determination data.Pedotheque uses the wet digesting processing of HNO3-HF-HClO4, pedotheque
Available heavy metal constituent content use 0.1N HCl with 1: 5 native liquor ratio vibration extraction 1.5h after filter, filtrate uses ICP-
OES methods detect.
The ICP-OES Instrument measuring parameters of setting：Lead, the detection spectral line of emission of cadmium element be respectively 2203nm and
2265nm,
Detector C ID low bands (＜ 265nm) time of integration is 15s, high band (＞ 265nm) time of integration 5s；Sample introduction
Wriggling revolution speed 100r/min；Sample introduction atomizer argon pressure is 193kPa；Secondary air amount is 1.0 L/min；High frequency occurs
Device power is 1500w.It is repeated 4 times.
2 results and analysis
2.1 different height hedgerows obstruct the effect of dust lead contamination tealeaves
Before in July, 2014 does not plant hedgerow, 1.5m areas, 2.0m areas, 3.0m areas and CK areas are detected：1 bud of roadside, 1 leaf tender tip
Lead content be 0.66mg/kg -0.75mg/kg, be 3.11mg/kg -3.40mg/kg into leaf lead content；1 bud, 1 leaf at 50m
The lead content of tender tip is 0.55mg/kg -0.71mg/kg, is 2.11mg/kg -2.42mg/kg into leaf lead content；1 bud at 100m
The lead content of 1 leaf tender tip is 0.51mg/kg -0.66mg/kg, is 1.72mg/kg -1.78mg/kg into leaf lead content；200m
The lead content for locating 1 bud, 1 leaf tender tip is 0.49mg/kg -0.63mg/kg, is 1.66mg/kg -1.74mg/ into leaf lead content
kg.Stretched out from roadside to tea place, the lead content of 1 bud, the 1 leaf tea tip or Cheng Ye successively decrease, and lead content is bright after 50m
It is aobvious to successively decrease；The lead content of Cheng Ye is higher than (table 1) of tender tip.
It is in July, 2016 that hedgerow, which is planted, after 1.5 years, is measured：1. roadside：1 leaf of 1.5m areas, 2.0m areas and 1 bud of 3.0m areas
Tender tip and lead content into leaf are 0.61mg/kg -0.65mg/kg and 2.47mg/kg -2.98mg/kg, CK areas are then
0.69mg/kg and 3.17mg/kg；Compared with July, 2014 measured value, it is found that hedgerow area lead content is decreased obviously, and CK areas are omited
There is increase；Declined with 3.0m areas lead content most obvious, 1 bud, 1 leaf tender tip and decline 18.6% and 27.4%, 2.0m areas respectively into leaf
1 bud, 1 leaf tender tip and decline 8.5% and 7.5% respectively into leaf lead content, 1 bud of 1.5m areas, 1 leaf tender tip and into leaf lead content respectively under
Drop 6.2% and 4.2%.2. at 50m, 1 bud, the 1 leaf tea tip and into leaf lead content rate of descent 1.5m areas then be respectively 1.8% He
4.7%, 2.0m area are respectively 10.3% and 12.5%, and 3.0m areas are respectively 16.9% and 16.9%, CK areas be respectively 0 and-
2.2%, i.e. CK areas are increased slightly.3. at 100m, 1 bud, the 1 leaf tea tip and into leaf lead content rate of descent it is respectively then in 1.5m areas
2.0% and 0.6%, 2.0m area be respectively 9.2% and 2.8%, 3.0m areas are respectively 1.5% and 1.7%, and CK areas are respectively 0
It increased with -5.8%, CK areas.4. at 200m, 1 bud, the 1 leaf tea tip and then distinguish in 1.5m areas into leaf lead content rate of descent
For 0 and 0.6%, 2.0m areas are respectively 4.8% and 1.7%, and 3.0m areas are respectively 3.2% and 1.7%, CK areas be respectively 0 and-
0.6% (table 1).
2.2 different height hedgerows obstruct the effect of dust cadmium pollution tealeaves
Do not plant hedgerow in July, 2014, contain cadmium in the dust that crowd and motor vehicles evoke on highway, have for tealeaves
It is certain to influence, roadside 1.5m areas, 2.0m areas, 3.0m areas and 1 bud of CK areas, 1 leaf tender tip and into cadmium content in leaf for 0.051mg/kg-
0.062mg/kg and 0.062mg/kg -0.072mg/kg；At 50m 1 bud, 1 leaf tender tip and into cadmium content in leaf be 0.041mg/
Kg -0.053mg/kg and 0.062mg/kg -0.072mg/kg, has been reduced；1 bud, 1 leaf tender tip and contain at 100m into cadmium in leaf
Measure as 0.041mg/kg -0.053mg/kg and 0.061mg/kg -0.063mg/kg, minutely reduce.
Plant hedgerow 1 year half to detect afterwards, 1. roadside：1.5m areas, 2.0m areas and 1 bud of 3.0m areas, 1 leaf tender tip and into leaf
Cadmium content is 0.041mg/kg and 0.051mg/kg, CK area are then 0.061mg/kg and 0.083mg/kg；With the phase in July, 2014
Than hedgerow area cadmium content is declined slightly, most obvious with the decline of 3.0m areas cadmium content, and CK areas cadmium content is increased slightly.2. in 50m
Place, 1.5m areas, 2.0m areas and 1 bud of 3.0m areas, 1 leaf tender tip and into leaf cadmium content for 0.040-0.042mg/kg and 0.061-
0.062mg/kg, CK area are then 0.054mg/kg and 0.072mg/kg；Compared with setting up hedgerow before 1.5 years, hedgerow area cadmium content
Slightly reduce, CK areas cadmium content is slightly increased.3. at 100m, 1.5m areas, 2.0m areas and 1 bud of 3.0m areas, 1 leaf tender tip and into leaf
Cadmium content be that 0.041-0.052mg/kg and 0.061-0.062mg/kg, CK areas are then 0.061mg/kg and 0.062mg/
kg；Compared with before 1.5 years without hedgerow, hedgerow area and CK areas cadmium content have almost no change (table 2).
2.3 different height hedgerows obstruct the effect of dust lead and cadmium pollution tea place table soil
When in July, 2014 does not plant hedgerow, the topsoil lead content in roadside is 25.86mg/kg -27.11mg/kg, away from road
Lead content at the 50m of side is 24.96mg/kg -26.28mg/kg, away from the lead content at the 100m of roadside for 23.12mg/kg -
26.24mg/kg.From roadside towards tea place depths, topsoil lead content has been reduced, and 50m reduces amplitude very little.Plant hedgerow 1
In July, 2016 after year half, the roadside table soil lead content rate of descent for measuring 1.5m, 2.0m and 3.0m high hedgerows are respectively
1.7%th, 2.9% and 3.2%, and CK areas lead content rises 0.37%.
Topsoil cadmium content very little.Plant the front and rear change unobvious (table 3) of hedgerow.
The test site of the present invention is one section of township level highway section 3 kilometers apart from the fresh tea leaves market in the emerging town in Songyang County,
In succession on both sides of the road tea place.When being not provided with hedgerow, mid-July 1 bud of roadside 1 leaf tender tip and into leaf lead content be 0.61-3.4mg/
Kg, is decreased obviously away from roadside 50m lead contents, and lead content also has decline, but fall very little after 100m, illustrates agriculture district road
Bisque pollutes tea place to a certain extent really.After planting hedgerow for a period of time, at 0-50m of roadside, hedgerow area tealeaves lead
Content declines substantially, and CK areas plumbi content of tea is increased slightly；At 100-200m of roadside, hedgerow area lead content, which also has, to be declined, and
CK areas lead content is increased slightly.Hedgerow truly has the effect of barrier dust lead；Moreover, vehicle flowrate on the cement pavement of country's major trunk roads
All very big with flow of the people, dust is big, and the short amazing effect of hedgerow, needs 3m high in the context of the invention.
Cadmium in air is mostly derived from industrial production, its chemical form has cadmium sulfate, cadmium sulfide, cadmium oxide and caddy
Deng being present in solid particulate matter trickle in air more.Vehicle is more on township road, navigates within agriculture district and industrial area, also can
Bring cadmium.Also the cadmium content of the invention for disclosing roadside tealeaves is significantly more than the cadmium content of tea place center tealeaves, and hedgerow also has barrier
Effect, or preferably 3m high.
And Development of Tea Shoot of the table 1 away from roadside different distance and into leaf lead content (mg/kg)
And Development of Tea Shoot of the table 2 away from roadside different distance and into leaf cadmium content (mg/kg)
Table 3 is away from the topsoil lead of roadside different distance and the content of cadmium（mg/kg)
Claims (5)
- A kind of 1. method that road dust lead and cadmium pollution tea place are obstructed with hedgerow, it is characterised in that realized by following steps： Between tea place to be isolated and highway, dense planting is highly the tree of 2.5m~3.3m, intensive between tree and tree to be connected, composition green Hedge, the tea place ground and highway subgrade are contour.
- 2. according to the method described in claim 1, it is characterized in that the seeds of the green hedge of composition are to be suitable for acid soil Seeds, the pH scopes 3.5~6.5 of acid soil, and seeds do not influence for tea leaf quality, Tea Pest Fauna.
- 3. method according to claim 1 or 2, it is characterised in that the seeds of the green hedge of composition are pine tree, Chinese ilex, Chinese littleleaf box With the one or more in azalea.
- 4. according to the method described in claim 1, it is characterized in that the tea place tea tree is highly less than 1.2m.
- 5. according to the method described in claim 1, it is characterized in that the distance between the tree and tree are less than 0.8m.
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| CN201711267298.2A CN108012738A (en) | 2017-12-05 | 2017-12-05 | A kind of method that road dust lead and cadmium pollution tea place are obstructed with hedgerow |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711267298.2A CN108012738A (en) | 2017-12-05 | 2017-12-05 | A kind of method that road dust lead and cadmium pollution tea place are obstructed with hedgerow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482628A (en) * | 2018-10-29 | 2019-03-19 | 浙江农林大学 | A method of utilizing S.plumbizincicola-little leaf boxwood Intercropping System cadmium pollution soil repair |
Citations (3)
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|---|---|---|---|---|
| JPH1080222A (en) * | 1996-09-09 | 1998-03-31 | Furuta Denki Kk | Tea garden maintenance truck of all the time attendance type |
| CN101233804A (en) * | 2007-01-29 | 2008-08-06 | 四川圣硒贡茗茶业科技有限公司 | Organophilic cultivation method for tea |
| CN105875115A (en) * | 2014-11-04 | 2016-08-24 | 重庆市凤归茶叶种植场 | Planting method for tea leaves |
-
2017
- 2017-12-05 CN CN201711267298.2A patent/CN108012738A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1080222A (en) * | 1996-09-09 | 1998-03-31 | Furuta Denki Kk | Tea garden maintenance truck of all the time attendance type |
| CN101233804A (en) * | 2007-01-29 | 2008-08-06 | 四川圣硒贡茗茶业科技有限公司 | Organophilic cultivation method for tea |
| CN105875115A (en) * | 2014-11-04 | 2016-08-24 | 重庆市凤归茶叶种植场 | Planting method for tea leaves |
Non-Patent Citations (1)
| Title |
|---|
| 王梦馨等: "绿篱阻隔公路粉尘铜污染茶园的研究", 《安徽农学通报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482628A (en) * | 2018-10-29 | 2019-03-19 | 浙江农林大学 | A method of utilizing S.plumbizincicola-little leaf boxwood Intercropping System cadmium pollution soil repair |
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Application publication date: 20180511 |