CN101715685A - Comprehensive technique for reducing pollutions to amaranths by heavy metals of cadmium and lead in soil - Google Patents
Comprehensive technique for reducing pollutions to amaranths by heavy metals of cadmium and lead in soil Download PDFInfo
- Publication number
- CN101715685A CN101715685A CN200910193575A CN200910193575A CN101715685A CN 101715685 A CN101715685 A CN 101715685A CN 200910193575 A CN200910193575 A CN 200910193575A CN 200910193575 A CN200910193575 A CN 200910193575A CN 101715685 A CN101715685 A CN 101715685A
- Authority
- CN
- China
- Prior art keywords
- coloured amaranth
- accumulation
- psc
- soil
- countermeasure
- 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.)
- Granted
Links
Abstract
The invention relates to a comprehensive technique for reducing pollutions to amaranths by heavy metals of cadmium and lead in soil, which comprises the following steps: firstly, screening an amaranth pollution strategy variety (Cd+Pb-PSC) with low accumulation of the cadmium and the lead; and secondly, planting the amaranth pollution strategy variety (Cd+Pb-PSC) with the low accumulation of the cadmium and the lead, and cooperatively employing a special soil conditioner for inhibiting the amaranth pollution strategy variety (Cd+Pb-PSC) with the low accumulation of the cadmium and the lead from absorbing the cadmium and the lead in the planting process. The comprehensive technique effectively reduces the absorption of Cd and Pb by the amaranths and reduces the pollutions to the amaranths by the heavy metals of the cadmium and the lead in the soil by screening the amaranth pollution strategy variety (Cd+Pb-PSC) with the low accumulation of the cadmium and the lead and employing the special soil conditioner for inhibiting the amaranth pollution strategy variety (Cd+Pb-PSC) with the low accumulation of the cadmium and the lead from absorbing the cadmium and the lead.
Description
Technical field
The present invention relates to the process for comprehensively treating field of heavy-metal contaminated soil, relate in particular to a kind of complex art that reduces soil heavy metal cadmium, lead pollution three-coloured amaranth.
Background technology
The heavy metal pollution of soil great environmental problem that become international.According to estimates, the whole world is discharged into toxic heavy metal in the environment every year up to millions of tons (Nriagu et al., 1988), wherein have sizable part to enter agricultural land soil by irrigating water body and atmospheric sedimentation, and the heavy metal pollution of soil of China is particularly serious.According to statistics, Chinese contaminated arable area is nearly 2,000 ten thousand hectares at present, accounts for 1/5 (Wei Chaoyang, Chen Tongbin, 2001) of total cultivated area.But because huge population pressure, most of contaminated farmland still is being used for crops production.For example, the Pb content of the agricultural land soil in area, Nanjing 12% has surpassed national soil environment quality secondary standard limits value (GB15618-1995), and 56% soil Cu exceeds standard, and 18% soil Zn exceeds standard, 58% soil Cd exceed standard (Chen Yahua etc., 2006).Yang Guoyi etc. (2008) find the investigation of 8 heavy metal species in 171 vegetable samples of the large-scale vegetables of Guangdong Province's representative region base production, 13.45% vegetable sample is subjected to heavy metal pollution in various degree, Cd and Pb are main pollution-producing, and content of beary metal and comprehensive pollution indexes all are higher than beans, piece root class, melon and solanaceous vegetables in the leaf vegetables.This shows that the content of taking urgent technical measures to reduce heavy metal in the food is very urgent task of agriculture environmental protection field.
At present, method of greatest concern is a biological restoration in the heavy metal pollution of soil prevention and control field, especially phytoremediation.But such technology mainly is applicable to the soil remediation in the more serious mine of pollution level, smelting, industrial place etc., and for China have a large capacity and a wide range in, low farmland of polluting, the method for biological restoration is also inapplicable; In addition, present known heavy metal super-enriched plant, ubiquity the characteristics that biomass is little, growth rate is slow, and numerous species still is difficult to effectively use (Cunninggham etal., 1995) at present in actual phytoremediation; Moreover when crop itself was exactly heavy metal super-enriched plant, the pollution of adopting the method to reduce this crop heavy metal was exactly an antinomy.Therefore, when continuing development bioremediation technology (raising the efficiency, reduce cost, inquire into the feasibility of intercropping, crop rotation technology etc.), must take other simple and easy to do methods with of the pollution of effective reduction heavy metal-polluted soil to crops.
Crops kind and the kind of using the low amount accumulation of heavy metal are present research focuses, are considered to tackle the effective means of farmland soil heavy metals pollution problem.There is research to think that the application low amount accumulation of cadmium kind can reduce the risk that heavy metal enters the human foods chain.Yu et al. (2006), Zhu et al. (2007), Wang et al. (2007) will have the low variety of crops of measuring accumulation of heavy metal and reduce " polluting countermeasure kind (Pollution-safe cultivar; be called for short PSC) ", and edible position content of beary metal meets the kind of safe edible standard when promptly planting under certain pollutional condition.
Yet the application of PSC is to be subjected to the strictness of heavy metal pollution of soil concentration restriction.For many vegetable crops that are subject to heavy metal pollution, the PSC kind that screening obtains is only applicable to the low polluted farmland soil of heavy metal, can't plant, promote at middle and high contaminated region.Three-coloured amaranth has been proved to be the super enriching plant (Wang, 2007 doctorate papers) of heavy metal Cd.Because its super accumulation ability to heavy metal Cd, even if the PSC kind that screening obtains, its edible position Cd content also only can meet the safe edible standard when Cd pollutes lighter soil plantation, (reach 0.4mgkg as Cd content in the higher a little soil of pollution level
-1More than) its Cd content just has very high risk of exceeding criterion, and this type of Cd contaminated soil quantity is big, distribution is wide, and also has many such polluted soils not understood by people as yet, therefore, even if use PSC, the production of three-coloured amaranth exists the bigger risk that polluted by Cd all the time.
There are some researches show that some material for agriculture can reduce the biological effectiveness of heavy metal-polluted soil; In addition, some microorganisms also can by absorb or fixedly heavy metal reduce its activity in soil, thereby reduce the absorption of crop to it.Yet because the specificity of crop varieties, specifically with what material for agriculture and microorganism, and the consumption of material for agriculture and compound mode, to reduce the pollution of heavy metal-polluted soil effectively to crop, this all needs to screen for a long time and optimization work, and the method that adopts in the optimizing process also has nothing in common with each other, super enriching plant for heavy metals such as three-coloured amaranths, do not provide in the prior art and can effectively reduce the soil conditioner that it is subjected to heavy metal pollution of soil, more do not provide the method that screening suppresses the soil conditioner of heavy metal pollution of soil.
Therefore, providing a kind of complex art that reduces soil heavy metal cadmium, lead pollution three-coloured amaranth, overcome the deficiencies in the prior art, reduce the absorption of three-coloured amaranth to Cd in the soil and Pb effectively, is problem demanding prompt solution in the art.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of complex art that reduces soil heavy metal cadmium, lead pollution three-coloured amaranth, three-coloured amaranth by screening cadmium, plumbous low amount accumulation pollutes countermeasure kind (Cd+Pb-PSC), and use described three-coloured amaranth and pollute the special-purpose inhibition heavy metal cadmium of countermeasure kind (Cd+Pb-PSC), the plumbous soil conditioner that absorbs, effectively reduce the absorption of three-coloured amaranth, reduce heavy metal in soil cadmium, plumbous pollution three-coloured amaranth to Cd and Pb.
In order to solve the problems of the technologies described above, a kind of complex art that reduces soil heavy metal cadmium, lead pollution three-coloured amaranth is provided in the specific embodiment of the present invention, it is characterized in that comprising following steps:
The three-coloured amaranth of step 1, screening cadmium, plumbous low amount accumulation pollutes countermeasure kind (Cd+Pb-PSC);
Step 2, the three-coloured amaranth of planting cadmium, plumbous low amount accumulation in soil pollute countermeasure kind (Cd+Pb-PSC), and the three-coloured amaranth that compounding application suppresses this cadmium, plumbous low amount accumulation in planting process pollutes countermeasure kind (Cd+Pb-PSC) cadmium, the plumbous special-purpose soil modifying agent that absorbs.
A kind of implementation as technical solution of the present invention, described step 1 specifically comprises: plant three-coloured amaranth earlier in being subjected to the Cd contaminated soil, gather in three-coloured amaranth in picking time, by analyzing the content of Cd in the edible position of three-coloured amaranth, the three-coloured amaranth that filters out the low amount accumulation of Cd pollutes countermeasure kind (Cd-PSC); The three-coloured amaranth of the low amount accumulation of the Cd that plantation has filtered out in the soil of Cd, Pb combined pollution pollutes countermeasure kind (Cd-PSC) again, gather in three-coloured amaranth in picking time, by analyzing the content of Cd, Pb in the edible position of three-coloured amaranth, the three-coloured amaranth that filters out the low amount accumulation of Cd, Pb pollutes countermeasure kind (Cd+Pb-PSC).
Preferably, described step 1 specifically comprises:
(1) collects the main cultivar of three-coloured amaranth from various places;
(2) in being subjected to the Cd contaminated soil, apply base manure; In three-coloured amaranth planting season, broadcast the various three-coloured amaranth seeds of in (1), collecting, gather in three-coloured amaranth in picking time, analyze the content of Cd in the above-mentioned three-coloured amaranth cauline leaf, screen the low kind 30% or more of average Cd accumulation of Cd accumulation in those cauline leafs, can regard as the three-coloured amaranth pollution countermeasure kind (Cd-PSC) of the low amount accumulation of Cd than other kinds;
(3) in the soil of Cd, Pb combined pollution, apply base manure; In three-coloured amaranth planting season, the three-coloured amaranth of broadcasting the low amount accumulation of the Cd that obtains in (2) pollutes countermeasure kind (Cd-PSC) seed, gather in three-coloured amaranth in picking time, content by Cd and Pb in the analysis three-coloured amaranth cauline leaf, it is lower more than 30% than the average Cd accumulation of other kinds to screen Cd accumulation in those cauline leafs, and the Pb accumulation can be regarded as the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) that the low amount of Cd, Pb accumulates than the low kind 20% or more of mean P b accumulation of other kinds.
As the another kind of implementation of technical solution of the present invention, described step 1 specifically comprises:
Earlier plant three-coloured amaranth in being subjected to the Pb contaminated soil, gather in three-coloured amaranth in picking time, by analyzing the content of Pb in the edible position of three-coloured amaranth, the three-coloured amaranth that filters out the low amount accumulation of Pb pollutes countermeasure kind (Pb-PSC); The three-coloured amaranth of the low amount accumulation of the Pb that plantation has filtered out in the soil of Cd, Pb combined pollution pollutes countermeasure kind (Pb-PSC) again, gather in three-coloured amaranth in picking time, by analyzing the content of Cd, Pb in the edible position of three-coloured amaranth, the three-coloured amaranth that filters out the low amount accumulation of Cd, Pb pollutes countermeasure kind (Cd+Pb-PSC).
Preferably, described step 1 specifically comprises:
(1) collects the main cultivar of three-coloured amaranth from various places;
(2) in being subjected to the Pb contaminated soil, apply base manure; In three-coloured amaranth planting season, broadcast the various three-coloured amaranth seeds of in (1), collecting, gather in three-coloured amaranth in picking time, analyze the content of Pb in the above-mentioned three-coloured amaranth cauline leaf, screen the low kind 20% or more of mean P b accumulation of Pb accumulation in those cauline leafs, can regard as the three-coloured amaranth pollution countermeasure kind (Pb-PSC) of the low amount accumulation of Pb than other kinds;
(3) in the soil of Cd, Pb combined pollution, apply base manure; In three-coloured amaranth planting season, the three-coloured amaranth of broadcasting the low amount accumulation of the Pb that obtains in (2) pollutes countermeasure kind (Pb-PSC) seed, gather in three-coloured amaranth in picking time, content by Cd and Pb in the analysis three-coloured amaranth cauline leaf, it is lower more than 30% than the average Cd accumulation of other kinds to screen Cd accumulation in those cauline leafs, and the Pb accumulation can be regarded as the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) that the low amount of Cd, Pb accumulates than the low kind 20% or more of mean P b accumulation of other kinds.
Further, for Cd, the Pb that selects to reach best absorbs inhibitory action, described step 2 comprises that also screening suppresses heavy metal cadmium, the plumbous special-purpose soil modifying agent that absorbs.
Preferably, special-purpose inhibition heavy metal cadmium, the plumbous soil conditioner that absorbs of described screening specifically comprises:
A, in the soil of Cd, Pb combined pollution, apply the various material for agriculture of varying level dosage, in three-coloured amaranth planting season, broadcast the seed of the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) of the cadmium that obtains in the step 1, plumbous low amount accumulation, gather in three-coloured amaranth in picking time, content by Cd and Pb in the edible position of analysis three-coloured amaranth, filter out the some kinds of special-purpose material for agriculture that can suppress cadmium, plumbous low amount accumulation three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) Cd, Pb absorption and accumulation, and determine its best using dosage; Analyze the biomass at the edible position of three-coloured amaranth simultaneously, guarantee that material for agriculture is to the equal unrestraint effect of the growth of three-coloured amaranth.
B, will be among the A screening special-purpose material for agriculture and the best using dosage thereof that obtain, be optimized combination, in three-coloured amaranth planting season, broadcast the seed of the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) of the cadmium that obtains in the step 1, plumbous low amount accumulation, gather in three-coloured amaranth in picking time, content by Cd and Pb in the edible position of analysis three-coloured amaranth, screening obtains the three-coloured amaranth of cadmium, plumbous low amount accumulation is polluted the material for agriculture combination that countermeasure kind (Cd+Pb-PSC) Cd, Pb absorb inhibitory action the best, is the special-purpose soil modifying agent.
In addition, need to prove, among the present invention involved Cd contaminated soil can directly pick up from the Cd contaminated environment soil, also can be subjected to the Cd contaminated soil by in unpolluted soil, adding, be made into the Cd contaminated soil; The Pb contaminated soil can directly pick up from the Pb contaminated environment soil, also can be subjected to the Pb contaminated soil by in unpolluted soil, adding, be made into the Pb contaminated soil; And for Cd, the soil of Pb combined pollution, then can directly pick up from Cd, in the Pb contaminated environment soil, also can add the Pb contaminated soil in the Cd contaminated soil, perhaps in the Pb contaminated soil, add the Cd contaminated soil, perhaps be subjected to Cd and Pb contaminated soil, be made into Cd, Pb combined contamination soil in adding in not comtaminated soil.
In complex art of the present invention, used Cd, Pb contaminated soil can be with reference to following standard fabrication:
A. unpolluted soil: full Cd content is less than 0.30mg kg in the soil
-1, full Pb content is less than 50mg kg
-1(being lower than " food agricultural produce home environment criteria of quality evaluation (HJ332-2006) " threshold limit value) about Cd, Pb content in the vegetable growing soil;
B. be subjected to the Cd contaminated soil: full Cd content is greater than 0.30mg kg in the soil
-1(be higher than in " food agricultural produce home environment criteria of quality evaluation (HJ332-2006) " about vegetable growing soil in the threshold limit value of Cd content);
C. be subjected to the Pb contaminated soil: full Pb content is greater than 50mgkg in the soil
-1(being higher than " food agricultural produce home environment criteria of quality evaluation (HJ332-2006) " threshold limit value) about Pb content in the vegetable growing soil;
D. be subjected to the soil of Cd, Pb combined pollution: full Cd content is greater than 0.30mg kg in the soil
-1, full Pb content is greater than 50mgkg
-1(being higher than " food agricultural produce home environment criteria of quality evaluation (HJ332-2006) " threshold limit value) about Cd, Pb content in the vegetable growing soil.
In the above-mentioned screening step of the inventive method, the material for agriculture of being mentioned can be selected from following material:
A. organic materials: stalk, peat, wood chip, chicken manure, grass meal;
B. inorganic material: lime, fused calcium magnesium phosphate, siliceous fertilizer, solid sulfate;
C. microorganism formulation.
Compared with prior art, the complex art of minimizing soil heavy metal cadmium of the present invention, lead pollution three-coloured amaranth has following beneficial effect at least:
Technical scheme of the present invention, the three-coloured amaranth that obtains the low amount accumulation of edible position Cd, Pb by two step screenings pollutes countermeasure kind (Cd+Pb-PSC), has reduced the risk that Cd and Pb are detrimental to health through three-coloured amaranth in the water and soil environment; On this basis, the present invention gives acquisition can effectively suppress this cadmium, plumbous low three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) cadmium of accumulation, the method for the plumbous special-purpose soil modifying agent that absorbs measured, thereby further reduce the accumulation of three-coloured amaranth, and enlarged cadmium, the plumbous low extent of spreading amd application of measuring the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) of accumulation Cd and Pb.
In addition, technical scheme of the present invention has been used in combination three-coloured amaranth and has polluted countermeasure kind and special-purpose soil modifying agent, takes weak point, and cost is low, and can reduce China agricultural land soil Cd, Pb directly, quickly and efficiently and pollute the food safety risk that causes; And it is with strong points, simple to operate, expense is cheap, safety, is suitable for large scale application.
Embodiment
In order further to disclose the present invention, the present invention is described in detail below in conjunction with specific embodiment.
The three-coloured amaranth of the low amount accumulation of embodiment 1:Cd pollutes the screening test of countermeasure kind (Cd-PSC)
This test in Heshan City research of agricultural science carry out, soil Cd pollution level is slight pollution (0.400mgkg
-1), and (soil Cd content is 0.121mgkg to be provided with contrast
-1).Buy 29 of three-coloured amaranth (Amaranthus.mangostanus L) kinds from various places.Test period is in July, 2006.From broadcasting in the engagement for 16 seeds respectively selecting healthy homogeneous the examination VARIETIES OF VEGETABLE AMARANTHUS.Thinning behind the 10d, every basin keeps 8 strains.Final singling behind the 20d, every basin keeps 4 strains.Duration of test regularly waters according to weather and plant growing situation.Grow and take a sample after 42 days.
Result of the test shows, under collating condition, all eats all (Cd≤0.2mg kg in the international code committee (CAC) critical field of portion C d accumulation for the examination VARIETIES OF VEGETABLE AMARANTHUS
-1FW); Under slight Cd pollutional condition, the edible portion C d accumulation of VARIETIES OF VEGETABLE AMARANTHUS has surpassed above-mentioned CAC standard.
In 29 VARIETIES OF VEGETABLE AMARANTHUS of present embodiment, the accumulation that the edible portion C d of 4 VARIETIES OF VEGETABLE AMARANTHUS in two experimental group arranged all hangs down more than 30% than the average Cd accumulation of other kinds, so these 4 VARIETIES OF VEGETABLE AMARANTHUS of Preliminary screening are the VARIETIES OF VEGETABLE AMARANTHUS (Cd-PSC) of the low amount accumulation of Cd.
The three-coloured amaranth of the low amount accumulation of embodiment 2:Cd, Pb pollutes the screening test of countermeasure kind (Cd+Pb-PSC)
This test in Heshan City research of agricultural science carry out, soil be set to the contrast (soil Cd concentration is 0.17mgkg
-1, Pb concentration is 37mgkg
-1), high Pb pollutes (Cd0.17mgkg
-1, Pb321mgkg
-1), high Cd pollutes (Cd0.64mgkg
-1, Pb37mgkg
-1) and the high Pb combined pollution of height Cd (Cd0.64mgkg
-1, Pb321mgkg
-1).Test period is in October, 2006.1 VARIETIES OF VEGETABLE AMARANTHUS (Cd-PSC) that above-mentioned test is obtained and the seeds of 3 the high accumulation of Cd VARIETIES OF VEGETABLE AMARANTHUS broadcast above-mentioned four groups for trying in the soil.Thinning behind the 10d, every basin keeps 8 strains.Final singling behind the 20d, every basin keeps 4 strains.Duration of test regularly waters according to weather and plant growing situation.Grow and take a sample after 42 days.
Result of the test shows:
(1) in the control soil, 4 the edible portion C d of VARIETIES OF VEGETABLE AMARANTHUS, Pb content all do not surpass CAC standard (Cd≤0.2mg kg
-1FW, Pb≤0.3mgkg
-1FW); In the high Pb contaminated soil, the edible portion C d content of 4 VARIETIES OF VEGETABLE AMARANTHUS all surpass the CAC standard, but Pb content has surpassed the ceiling value of the Pb content of CAC standard; In the high Cd contaminated soil, the edible part Pb accumulations of 4 VARIETIES OF VEGETABLE AMARANTHUS all surpass the CAC standard, but the Cd accumulation has surpassed the ceiling value of the Cd content of CAC standard; In the high Pb combined contamination soil of high Cd, 4 VARIETIES OF VEGETABLE AMARANTHUS eat the accumulation of portion C d and Pb all above the CAC standard.
The accumulation of the edible part Pb of a three-coloured amaranth Cd-PSC kind of (2) participating in the experiment is lower by 20% than the mean P b accumulation of other kinds, so this VARIETIES OF VEGETABLE AMARANTHUS of Preliminary screening is the VARIETIES OF VEGETABLE AMARANTHUS (Cd+Pb-PSC) of the low amount accumulation of Cd, Pb.But this kind is in the high Cd or high Pb contaminated soil of this experimental scheme, and its edible partial C d or Pb content have all surpassed the CAC standard.
Embodiment 3: suppress cadmium, the plumbous low screening of special-purpose material for agriculture and the determining of concentration thereof that the accumulation three-coloured amaranth pollutes countermeasure kind (Cd+Pb-PSC) Cd, Pb absorption and accumulation of measuring
This test is carried out in the Zhongshan University campus, and test is Cd, Pb combined contamination soil with soil, and soil Cd concentration is 1.84mgkg
-1, Pb concentration is 80.9mgkg
-1Test period is in April, 2008.With 4 kinds of organic materials perennial ryegrasses (A), rice straw (B), mountain green soy bean cast (C), chicken manure (D) and 2 kinds of inorganic material Ca (OH)
2(E) and Na
2SiO
7(F) apply Cd, Pb combined contamination soil respectively, every kind of material is provided with low (L: organic materials＜1%; Inorganic material＜1 ‰), (M:1%＜organic materials＜2% in; 1 ‰＜inorganic material＜2 ‰) and high (H:2%＜organic materials＜4%; 2 ‰＜inorganic material＜3 ‰) 3 horizontal processing gradients.Material is fully mixed with soil, and balance was broadcast the VARIETIES OF VEGETABLE AMARANTHUS (Cd+Pb-PSC) that obtains in the above-mentioned test after 14 days.Thinning behind the 10d, every basin keeps 8 strains.Final singling behind the 20d, every basin keeps 4 strains.Duration of test regularly waters according to weather and plant growing situation.Grow and take a sample after 40 days.
Result of the test shows:
(1) compare with the contrast of not using material for agriculture, A handles down, and VARIETIES OF VEGETABLE AMARANTHUS (Cd+Pb-PSC) eats portion C d, Pb accumulation all significantly to be increased; D handles down, and the edible portion C d content of three-coloured amaranth significantly reduces, but Pb content slightly increases; B, C, E and F handle down, and three-coloured amaranth eats portion C d, Pb accumulation all significantly to be reduced.Therefore, B, C, E and F effectively suppress the special-purpose material for agriculture that three-coloured amaranth (Cd+Pb-PSC) heavy metal absorbs.
(2) use the B material, under three kinds of application concentrations, three-coloured amaranth eats portion C d, the Pb accumulation does not all have significant difference, but along with the increase of amount of application, its biomass significantly reduces, and considers crop yield and application cost, BL treatment effect the best.Use the C material, M and H handle down, and three-coloured amaranth eats portion C d, the Pb accumulation is handled remarkable down the reduction than L, and output is handled down significantly increase than L, considers crop yield, suppresses effect and application cost, CM treatment effect the best.Use the E material, under three kinds of application concentrations, three-coloured amaranth eats portion C d, the Pb accumulation does not all have significant difference, but along with the increase of amount of application, its biomass significantly reduces, and considers crop yield and application cost, EL treatment effect the best.Use the F material, M and H handle down, and three-coloured amaranth eat portion C d, Pb accumulation and handles down than L and significantly reduce, and the output of crop is directly proportional with the amount of application of this material, consider crop yield, inhibition effect and application cost, FH treatment effect the best.BL, CM, EL and FH can be used as three-coloured amaranth (Cd+Pb-PSC) heavy metal and absorb the amount of application that suppresses special-purpose material for agriculture and the best.
Embodiment 4: the optimum organization that cadmium, plumbous low amount accumulation three-coloured amaranth pollute the special-purpose material for agriculture of countermeasure kind (Cd+Pb-PSC)
This test is carried out in the Zhongshan University campus, and test is Cd, Pb combined contamination soil with soil, and its soil Cd concentration is 0.88mgkg
-1, Pb concentration is 162mgkg
-1The test period of present embodiment is in August, 2008.4 kinds of materials and respective handling thereof that embodiment 3 screening is obtained make up mutually, form 9 kinds of materials combinations and (make up 1:BL; Combination 2:CM; Combination 3:EL; Combination 4:FH; Combination 5:CM+EL; Combination 6:CM+BL; Combination 7:BL+FH; Combination 8:BL+CM+FH; Combination 9:CM+EL+FH).The material of each combination is fully mixed with soil, and balance was broadcast 1 VARIETIES OF VEGETABLE AMARANTHUS (Cd+Pb-PSC) and 1 conventional variety of obtaining in the above-mentioned test after 14 days.Thinning behind the 10d, every basin keeps 8 strains.Final singling behind the 20d, every basin keeps 4 strains.Duration of test regularly waters according to weather and plant growing situation.Grow and take a sample after 35 days.
Result of the test shows:
(1) do not use under the material for agriculture situation, two for the edible portion C d of examination VARIETIES OF VEGETABLE AMARANTHUS, Pb accumulation all above the restriction of CAC standard; After using combination 3, combination 5, combination 6 respectively and making up 9 mixed material, the edible portion C d accumulation of the Cd+Pb-PSC that participates in the experiment surpasses the CAC standard, and conventional variety then exceeds standard; After using combination 3, combination 6, combination 7 respectively and making up 9 mixed material, the edible part Pb accumulation of Cd+Pb-PSC surpasses the CAC standard, and conventional variety still exceeds standard.After using combination 3, combination 6 and making up 9 mixed material, Cd+Pb-PSC eat portion C d, Pb accumulation all above the CAC standard, and conventional variety then exceeds standard.Wherein, the mixed material of combination 6 and combination 9 absorbs the best results that suppresses to participate in the experiment three-coloured amaranth Cd+Pb-PSC kind Cd, Pb.
(2) the above-mentioned Cd+Pb-PSC of plantation is in Cd, Pb combined contamination soil, use combination 6 simultaneously or make up 9 mixed material and absorb as the heavy metal of this kind and suppress the special-purpose soil modifying agent, its edible portion C d accumulation is respectively to conventional variety and uses 7.8% and 6.8% of conventional fertilizer, its edible part Pb accumulation be respectively conventional variety use conventional fertilizer 25.7% and 32.6%.
Therefore, use the technical scheme that the foregoing description discloses, can reduce soil Cd, Pb pollution effectively three-coloured amaranth.
The above is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (7)
1. complex art that reduces soil heavy metal cadmium, lead pollution three-coloured amaranth is characterized in that comprising following steps:
The three-coloured amaranth of step 1, screening cadmium, plumbous low amount accumulation pollutes countermeasure kind (Cd+Pb-PSC);
Step 2, the three-coloured amaranth of planting cadmium, plumbous low amount accumulation in soil pollute countermeasure kind (Cd+Pb-PSC), and the three-coloured amaranth that compounding application suppresses this cadmium, plumbous low amount accumulation in planting process pollutes countermeasure kind (Cd+Pb-PSC) cadmium, the plumbous special-purpose soil modifying agent that absorbs.
2. complex art according to claim 1 is characterized in that, described step 1 specifically comprises:
Earlier plant three-coloured amaranth in being subjected to the Cd contaminated soil, gather in three-coloured amaranth in picking time, by analyzing the content of Cd in the edible position of three-coloured amaranth, the three-coloured amaranth that filters out the low amount accumulation of Cd pollutes countermeasure kind (Cd-PSC); The three-coloured amaranth of the low amount accumulation of the Cd that plantation has filtered out in the soil of Cd, Pb combined pollution pollutes countermeasure kind (Cd-PSC) again, gather in three-coloured amaranth in picking time, by analyzing the content of Cd, Pb in the edible position of three-coloured amaranth, the three-coloured amaranth that filters out the low amount accumulation of Cd, Pb pollutes countermeasure kind (Cd+Pb-PSC).
3. complex art according to claim 2 is characterized in that, described step 1 specifically comprises:
(1) collects the main cultivar of three-coloured amaranth from various places;
(2) in being subjected to the Cd contaminated soil, apply base manure; In three-coloured amaranth planting season, broadcast the various three-coloured amaranth seeds of in (1), collecting, gather in three-coloured amaranth in picking time, analyze the content of Cd in the above-mentioned three-coloured amaranth cauline leaf, screen the low kind 30% or more of average Cd accumulation of Cd accumulation in those cauline leafs, can regard as the three-coloured amaranth pollution countermeasure kind (Cd-PSC) of the low amount accumulation of Cd than other kinds;
(3) in the soil of Cd, Pb combined pollution, apply base manure; In three-coloured amaranth planting season, the three-coloured amaranth of broadcasting the low amount accumulation of the Cd that obtains in (2) pollutes countermeasure kind (Cd-PSC) seed, gather in three-coloured amaranth in picking time, content by Cd and Pb in the analysis three-coloured amaranth cauline leaf, it is lower more than 30% than the average Cd accumulation of other kinds to screen Cd accumulation in those cauline leafs, and the Pb accumulation can be regarded as the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) that the low amount of Cd, Pb accumulates than the low kind 20% or more of mean P b accumulation of other kinds.
4. complex art according to claim 1 is characterized in that, described step 1 specifically comprises:
Earlier plant three-coloured amaranth in being subjected to the Pb contaminated soil, gather in three-coloured amaranth in picking time, by analyzing the content of Pb in the edible position of three-coloured amaranth, the three-coloured amaranth that filters out the low amount accumulation of Pb pollutes countermeasure kind (Pb-PSC); The three-coloured amaranth of the low amount accumulation of the Pb that plantation has filtered out in the soil of Cd, Pb combined pollution pollutes countermeasure kind (Pb-PSC) again, gather in three-coloured amaranth in picking time, by analyzing the content of Cd, Pb in the edible position of three-coloured amaranth, the three-coloured amaranth that filters out the low amount accumulation of Cd, Pb pollutes countermeasure kind (Cd+Pb-PSC).
5. complex art according to claim 4 is characterized in that, described step 1 specifically comprises:
(1) collects the main cultivar of three-coloured amaranth from various places;
(2) in being subjected to the Pb contaminated soil, apply base manure; In three-coloured amaranth planting season, broadcast the various three-coloured amaranth seeds of in (1), collecting, gather in three-coloured amaranth in picking time, analyze the content of Pb in the above-mentioned three-coloured amaranth cauline leaf, screen the low kind 20% or more of mean P b accumulation of Pb accumulation in those cauline leafs, can regard as the three-coloured amaranth pollution countermeasure kind (Pb-PSC) of the low amount accumulation of Pb than other kinds;
(3) in the soil of Cd, Pb combined pollution, apply base manure; In three-coloured amaranth planting season, the three-coloured amaranth of broadcasting the low amount accumulation of the Pb that obtains in (2) pollutes countermeasure kind (Pb-PSC) seed, gather in three-coloured amaranth in picking time, content by Cd and Pb in the analysis three-coloured amaranth cauline leaf, it is lower more than 30% than the average Cd accumulation of other kinds to screen Cd accumulation in those cauline leafs, and the Pb accumulation can be regarded as the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) that the low amount of Cd, Pb accumulates than the low kind 20% or more of mean P b accumulation of other kinds.
6. according to any described complex art in the claim 1, it is characterized in that: described step 2 comprises that also screening suppresses heavy metal cadmium, the plumbous special-purpose soil modifying agent that absorbs.
7. complex art according to claim 6 is characterized in that, special-purpose inhibition heavy metal cadmium, the plumbous soil conditioner that absorbs of described screening specifically comprises:
A, in the soil of Cd, Pb combined pollution, apply the various material for agriculture of varying level dosage, in three-coloured amaranth planting season, broadcast the seed of the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) of the cadmium that obtains in the step 1, plumbous low amount accumulation, gather in three-coloured amaranth in picking time, content by Cd and Pb in the edible position of analysis three-coloured amaranth, filter out the some kinds of special-purpose material for agriculture that can suppress cadmium, plumbous low amount accumulation three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) Cd, Pb absorption and accumulation, and determine its best using dosage; Analyze the biomass at the edible position of three-coloured amaranth simultaneously, guarantee that material for agriculture is to the equal unrestraint effect of the growth of three-coloured amaranth;
B, will be among the A screening special-purpose material for agriculture and the best using dosage thereof that obtain, be optimized combination, in three-coloured amaranth planting season, broadcast the seed of the three-coloured amaranth pollution countermeasure kind (Cd+Pb-PSC) of the cadmium that obtains in the step 1, plumbous low amount accumulation, gather in three-coloured amaranth in picking time, content by Cd and Pb in the edible position of analysis three-coloured amaranth, screening obtains the three-coloured amaranth of cadmium, plumbous low amount accumulation is polluted the material for agriculture combination that countermeasure kind (Cd+Pb-PSC) Cd, Pb absorb inhibitory action the best, is the special-purpose soil modifying agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101935759A CN101715685B (en) | 2009-11-02 | 2009-11-02 | Comprehensive technique for reducing pollutions to amaranths by heavy metals of cadmium and lead in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101935759A CN101715685B (en) | 2009-11-02 | 2009-11-02 | Comprehensive technique for reducing pollutions to amaranths by heavy metals of cadmium and lead in soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101715685A true CN101715685A (en) | 2010-06-02 |
| CN101715685B CN101715685B (en) | 2011-09-21 |
Family
ID=42430388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101935759A Expired - Fee Related CN101715685B (en) | 2009-11-02 | 2009-11-02 | Comprehensive technique for reducing pollutions to amaranths by heavy metals of cadmium and lead in soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101715685B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794297A (en) * | 2012-08-22 | 2012-11-28 | 湖南省林业科学院 | Nutritional-type remediation method for reducing Pb bioavailability of heavy metal-polluted soil |
| CN103286118A (en) * | 2013-05-17 | 2013-09-11 | 中国科学院华南植物园 | Method for reducing cadmium content in grasses and vegetables |
| CN103909088A (en) * | 2014-04-17 | 2014-07-09 | 常州大学 | Technique for reducing content of cadmium and lead in soil |
| CN104694134A (en) * | 2015-03-24 | 2015-06-10 | 湖南美鑫隆生态环保科技有限公司 | Soil conditioner and preparation method thereof |
| CN106118669A (en) * | 2016-06-17 | 2016-11-16 | 战锡林 | Mercury contaminated soil repair materials |
| CN106862255A (en) * | 2017-04-25 | 2017-06-20 | 常州大学 | A kind of acid soil restorative procedure of zinc lead ore pollution |
| CN107052035A (en) * | 2017-06-15 | 2017-08-18 | 湖南农业大学 | A kind of ecological restoring method of heavy-metal contaminated soil |
| CN107079626A (en) * | 2017-06-15 | 2017-08-22 | 湖南农业大学 | It is a kind of by plant three-coloured amaranth reduce soil heavy metal cadmium, lead contamination method |
| CN107413831A (en) * | 2017-07-05 | 2017-12-01 | 湖南农业大学 | One kind promotes red three-coloured amaranth growth to reduce heavy metal-polluted soil mercury pollution method |
| CN107771626A (en) * | 2017-10-13 | 2018-03-09 | 陈增光 | A kind of greenhouse gardening method for improving three-coloured amaranth Antioxidants |
| CN107913899A (en) * | 2017-11-15 | 2018-04-17 | 常州大学 | A kind of restorative procedure of mining area polluted agricultural land |
| CN108293723A (en) * | 2018-02-08 | 2018-07-20 | 广东第二师范学院 | A method of control soil heavy metal cadmium lead pollution for cabbage heart |
| CN113319117A (en) * | 2021-06-07 | 2021-08-31 | 四川嘉道博文生态科技有限公司 | Method for restoring heavy metal contaminated soil and organic-inorganic mixed conditioner adopted by method |
| CN114570762A (en) * | 2022-02-28 | 2022-06-03 | 中山大学 | Method for repairing heavy metal polluted tailing sand by using ciliate desert-grass |
-
2009
- 2009-11-02 CN CN2009101935759A patent/CN101715685B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794297A (en) * | 2012-08-22 | 2012-11-28 | 湖南省林业科学院 | Nutritional-type remediation method for reducing Pb bioavailability of heavy metal-polluted soil |
| CN103286118A (en) * | 2013-05-17 | 2013-09-11 | 中国科学院华南植物园 | Method for reducing cadmium content in grasses and vegetables |
| CN103286118B (en) * | 2013-05-17 | 2015-04-22 | 中国科学院华南植物园 | Method for reducing cadmium content in grasses and vegetables |
| CN103909088A (en) * | 2014-04-17 | 2014-07-09 | 常州大学 | Technique for reducing content of cadmium and lead in soil |
| CN104694134A (en) * | 2015-03-24 | 2015-06-10 | 湖南美鑫隆生态环保科技有限公司 | Soil conditioner and preparation method thereof |
| CN106118669A (en) * | 2016-06-17 | 2016-11-16 | 战锡林 | Mercury contaminated soil repair materials |
| CN106862255A (en) * | 2017-04-25 | 2017-06-20 | 常州大学 | A kind of acid soil restorative procedure of zinc lead ore pollution |
| CN107079626A (en) * | 2017-06-15 | 2017-08-22 | 湖南农业大学 | It is a kind of by plant three-coloured amaranth reduce soil heavy metal cadmium, lead contamination method |
| CN107052035A (en) * | 2017-06-15 | 2017-08-18 | 湖南农业大学 | A kind of ecological restoring method of heavy-metal contaminated soil |
| CN107413831A (en) * | 2017-07-05 | 2017-12-01 | 湖南农业大学 | One kind promotes red three-coloured amaranth growth to reduce heavy metal-polluted soil mercury pollution method |
| CN107771626A (en) * | 2017-10-13 | 2018-03-09 | 陈增光 | A kind of greenhouse gardening method for improving three-coloured amaranth Antioxidants |
| CN107913899A (en) * | 2017-11-15 | 2018-04-17 | 常州大学 | A kind of restorative procedure of mining area polluted agricultural land |
| CN108293723A (en) * | 2018-02-08 | 2018-07-20 | 广东第二师范学院 | A method of control soil heavy metal cadmium lead pollution for cabbage heart |
| CN108293723B (en) * | 2018-02-08 | 2020-12-08 | 广东第二师范学院 | Method for controlling soil heavy metal cadmium lead pollution flowering cabbage |
| CN113319117A (en) * | 2021-06-07 | 2021-08-31 | 四川嘉道博文生态科技有限公司 | Method for restoring heavy metal contaminated soil and organic-inorganic mixed conditioner adopted by method |
| CN113319117B (en) * | 2021-06-07 | 2023-03-17 | 四川嘉道博文生态科技有限公司 | Method for restoring heavy metal contaminated soil and organic-inorganic mixed conditioner adopted by method |
| CN114570762A (en) * | 2022-02-28 | 2022-06-03 | 中山大学 | Method for repairing heavy metal polluted tailing sand by using ciliate desert-grass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101715685B (en) | 2011-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101715685B (en) | Comprehensive technique for reducing pollutions to amaranths by heavy metals of cadmium and lead in soil | |
| CN109233840B (en) | Composite repairing agent for heavy metal contaminated soil and application thereof | |
| Singh et al. | Heavy metal load of soil, water and vegetables in peri-urban Delhi | |
| Jiang et al. | Effects of cadmium on nutrient uptake and translocation by Indian Mustard | |
| CN107695088B (en) | Method for restoring As-Cd combined polluted farmland soil by utilizing hyper-enriched plant biomass charcoal combined system | |
| CN104529668B (en) | Metal mine soil conditioner, and mine ecological remediation method using metal mine soil conditioner. | |
| Carlos et al. | Vermicomposting leachate (worm tea) as liquid fertilizer for maize (Zea mays L.) forage production | |
| Bargougui et al. | Agro-physiological and biochemical responses of Sorghum bicolor in soil amended by olive mill wastewater | |
| Zheng et al. | Mitigating cadmium accumulation in greenhouse lettuce production using biochar | |
| CN100427227C (en) | Plant restoration method for lead pollution of soil | |
| CN102491854B (en) | Preparation method and use of biological soil for mine vegetation restoration | |
| CN103272833B (en) | Method for repairing heavy metals in sludge substrate by biomass charcoal and complexing agents | |
| Antonious et al. | Heavy metals uptake in plant parts of sweet potato grown in soil fertilized with municipal sewage sludge | |
| CN106995704A (en) | A kind of renovation agent, its preparation method and the method with its restoration of soil polluted by heavy metal | |
| Zhang et al. | Difference between Pb and Cd accumulation in 19 elite maize inbred lines and application prospects | |
| CN110026420A (en) | A method of cadmium slight pollution farmland is repaired using wheat | |
| CN108641722B (en) | Soil improvement method for rare earth tailings | |
| Cheng et al. | Influence of cadmium on growth of root vegetable and accumulation of cadmium in the edible root | |
| CN101502236A (en) | Method for reducing soil heavy metal cadmium and lead pollution for cabbage heart | |
| Alaribe et al. | Nutrient value of landfill leachate on the growth of Brassica rapa L. | |
| CN110639946B (en) | Method for reducing heavy metal cadmium in plants | |
| Danaher et al. | Effect of a parabolic screen filter on water quality and production of Nile tilapia (Oreochromis niloticus) and water spinach (Ipomoea aquatica) in a recirculating raft aquaponic system | |
| Alaribe et al. | Fertigation of Brassica rapa L. using treated landfill leachate as a nutrient recycling option | |
| CN105964682A (en) | Method for restoring soil heavy metal cadmium pollution by use of herba cichorii | |
| CN109721423A (en) | A kind of pakchoi is compound fertilizer dedicated and its preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20181102 |