CN102391877A - Modifying agent for rice safety production applicable to cadmium-polluted rice field - Google Patents
Modifying agent for rice safety production applicable to cadmium-polluted rice field Download PDFInfo
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- CN102391877A CN102391877A CN2011102289756A CN201110228975A CN102391877A CN 102391877 A CN102391877 A CN 102391877A CN 2011102289756 A CN2011102289756 A CN 2011102289756A CN 201110228975 A CN201110228975 A CN 201110228975A CN 102391877 A CN102391877 A CN 102391877A
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Abstract
The invention relates to the technology of rice safety production of a cadmium-polluted rice field, in particular to a modifying agent for rice safety production applicable to a cadmium-polluted rice field. Lime and/or fly ash, as the modifying agent, is applied to polluted soil for growing rice. By applying the modifying agent for therice field, the rice variety realizes that the rice grows normally in intermediate-level and low-level cadmium-polluted rice fields, and the cadmium content in the rice accords with the cadmium limiting value of the pollution free rice of the agricultural industry criteria (NY 5115-2008).
Description
Technical field
The present invention relates to the rice safety production technique in cadmium pollution paddy field, the full modifying agent of producing of specifically a kind of suitable cadmium pollution paddy field semilate rice meter ampere.
Background technology
Be distributed in the agricultural land soil of the combination area of city and country, be faced with more and more severeer environmental problem, wherein, in the paddy field soil pollution of heavy metal also very serious, trade effluent irrigated farmland especially.These heavy metals very easily get in the human body through food chain; There is very big threat (document 1: Shi Rongguang in HUMAN HEALTH; Zhao Yujie; Peng Shengwei, etc. soil under the different land use type-accumulation of crop cadmium content and health risk analysis [J] thereof. resources science .2008,30 (12): 1904-1910.; Document 2: Bai Lingyu, Ceng Xibai, Li Lianfang, etc. different agricultural use modes are to the influence of heavy metal-polluted soil cumulative and the analysis of causes [J]. Scientia Agricultura Sinica .2010,43 (1): 96-104.).Research shows that the Cd that gets into human body can combine with the macromolecule organic of hydroxyl, amino, sulfydryl, many enzyme systems is suppressed, thereby influences the normal function of organs such as liver, kidney.In addition, Cd also can damage uriniferous tubules, causes glycosuria, proteinuria, aminoaciduria, and the output of urine calcium and uric acid is increased, and causes renal insufficiency.The long-term edible metabolism that cadmium food can influence calcium and phosphorus that contains; Cause the pathological change of internal organs such as kidney, lung, liver; Diseases such as induced osteoporosis, richets and urinary stone disease; Also might cause " itai-itai disease " (document 3:Kondo K.Incidence of minamata disease in communities along the Agano river; Niigata, Japan-pattern of the exposure and official diagnosis of patients [J] .Nippon Eisegaku Zasshi.1996,51599-611.).In view of the actual national conditions of China, big area mild or moderate polluted agricultural land is stopped farming, it obviously is unpractical carrying out the expensive engineering reparation of long phytoremediation or other cost.Through in contaminated soil, applying some modifying agents, make it meet China's agricultural industry criteria pollution-free rice (NY 5115-2008) cadmium value of limiting the quantity of to reduce farm crop edible portion cadmium content, low-level polluted agricultural land is able to safe utilization in can making like this.
Summary of the invention
The object of the invention is to provide a kind of suitable cadmium pollution paddy field semilate rice meter ampere the full modifying agent of producing.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts
The full modifying agent of producing of a kind of suitable cadmium pollution paddy field semilate rice meter ampere: apply lime and/or flyash as modifying agent to the contaminated soil of plantation rice.
The applied amount of said lime or flyash is respectively 0.1%～10% of contaminated soil weight percent.
The preferred sowing amount of said lime or flyash is 0.5%～1.2% of a contaminated soil weight percent for the lime applied amount; The flyash applied amount is a contaminated soil weight percent 0.5%～6%.
Apply the modifying agent of lime and/or flyash to the contaminated soil of rice cultivation, make the paddy rice can normal growth, realize the purpose of polluted agricultural land safety in production.
The rice varieties of said plantation is the low cadmium-accumulation rice varieties.Said low cadmium-accumulation rice varieties is Shen rice No. 4.Modifying agent and contaminated soil are mixed in upper soll layer, treat soaked field leveling back rice transplanting.
The advantage that the present invention had: transfer modifying agent through applying paddy field of the present invention; Make rice varieties be implemented in paddy rice normal growth on the low-level cadmium pollution paddy field, and cadmium content meets China's agricultural industry criteria pollution-free rice (NY 5115-2008) cadmium value of limiting the quantity of in the rice.In addition, the adjusting control agent that is applied does not have negative impact to soil itself, does not cause secondary pollution.Simultaneously, can promote the early growth and quick tiller of paddy rice, improve rice yield.
Description of drawings
Fig. 1 for the embodiment of the invention provide different cadmiums handle and different modifying agent effect under the brown rice cadmium content synoptic diagram (wherein (legend is respectively cleaning soil from left to right, 1% lime, 1% flyash, 3% flyash, 5% flyash) of distant star 17.
Embodiment
The screening of embodiment cadmium pollution paddy field safety in production modifying agent
1. test design
With Shenyang Dao Qu rice varieties is main; Extensively collect rice varieties, utilize the soil micro region test, with reference to the realization situation of paddy field cadmium pollution; Through the people is the method preparation cadmium pollution soil that adds cadmium; With China's agricultural industry criteria pollution-free rice (NY 5115-2008) cadmium value of limiting the quantity of is foundation, measures the enrichment characteristics of each kind to cadmium, finds out the kind higher to the cadmium relative content simultaneously.With the high accumulated water rice varieties of cadmium is the examination material, and promptly distant star 17 through in contaminated soil, applying flyash, lime modifying agent, filters out rice safety and produces modifying agent.
Concrete steps: spring is on by the paddy field soil of cadmium pollution; Evenly spreading fertilizer over the fields into the contaminated soil weight percent is 1%～10% modifying agent; Then; Press the conventional cultivation mode, adopt the mode of rotary tillage that adjusting control agent and soil are mixed in upper soll layer, treat that the soaked field leveling is afterwards by the usual manner rice transplanting and carry out other conventional production management.
Test design is following:
The experimental design of table 1 improvement of contaminated soil
| Numbering | Processing mode (soil cadmium mg/kg) |
| 1 | Cleaning soil (Cd 0) |
| 2 | Do not apply modifying agent (Cd 2.5) |
| 3 | Do not apply modifying agent (Cd 5.0) |
| 4 | 1% lime (Cd 0) |
| 5 | 1% lime (Cd 2.5) |
| 6 | 1% lime (Cd 5.0) |
| 7 | 1% flyash (Cd 0) |
| 8 | 3% flyash (Cd 0) |
| 9 | 5% flyash (Cd 0) |
| 10 | 1% flyash (Cd 2.5) |
| 11 | 3% flyash (Cd 2.5) |
| 12 | 5% flyash (Cd 2.5) |
| 13 | 1% flyash (Cd 5.0) |
| 14 | 3% flyash (Cd 5.0) |
| 15 | 5% flyash (Cd 5.0) |
2. sample analysis
Treat the plant sample gathered in the crops after the paddy rice maturation; A part is used for the mensuration of overground part heavy metal content, and rest part root division, stem, leaf, fruit 4 parts are fully washed with tap water respectively; And then use deionized water rinsing; The drop branch that anhydrates, the 30min that under 105 ℃, completes dries to constant weight in baking oven under 70 ℃ then.Plant sample crushing screening after the oven dry is subsequent use, and it is subsequent use that 100 mesh sieves are crossed in the air-dry back of pedotheque.Plant and pedotheque all adopt HNO
3-HClO
4Method digestion (the two volume ratio is 3: 1), the atomic method is measured the content of Cd, and atomic is the 180-80 of Hitachi, and the absorbing wavelength of cadmium is 228.8.The mensuration of basic physical and chemical such as the organic content of soil adopts conventional measuring method.
3. data statistics
The data that obtain are carried out statistical study with Microsoft Excel and SPSS16.0, utilize the new multipole difference check of Duncan to carry out significance test of difference (p＜0.05).
4. result
Adopt the atomic method, measured 40 kinds everywhere between cadmium content in the rice, the result sees table 2.According to China's agricultural industry criteria pollution-free rice (NY 5115-2008) cadmium value of limiting the quantity of be≤this criterion of 0.2mg/kg; Can find out that when the cadmium applied amount was 2.5mg/kg, cadmium content was less than 0.2mg/kg in No. 4 rice of Shen rice; When the cadmium level of adding is 5.0mg/kg; The Shen rice also is for No. 4 minimum, has only 0.31,0.40mg/kg.When the cadmium level of adding is 2.5, during 5.0mg/kg, the content of 17 pairs of cadmiums of distant star is the highest, reaches 0.80-1.47mg/kg respectively, can be considered to the high accumulation of cadmium kind.
The cadmium content (mg/kg) of each kind rice of table 2
| Numbering | Kind | CK | Cd?2.5 | Cd?5.0 |
| 1 | Rich standing grain 66 | 0.02 | 0.46 | 0.62 |
| 2 | Rich standing grain 80 | 0.03 | 0.31 | 0.58 |
| 3 | It |
nd | 0.53 | 0.74 |
| 4 | Shen rice No. 7 | nd | 0.31 | 0.55 |
| 5 | Shen rice No. 6 | 0.03 | 0.32 | 0.43 |
| 6 | Rich No. 6 of unit | 0.02 | 0.40 | 0.94 |
| 7 | No. 1, it good fortune | 0.05 | 0.40 | 0.58 |
| 8 | FZ18 | 0.05 | 0.37 | 0.63 |
| 9 | No. 6, rich standing grain | 0.01 | 0.29 | 0.44 |
| 10 | Salt rich 47 | 0.01 | 0.26 | 0.45 |
| 11 | Shen rice No. 4 | 0.03 | 0.19 | 0.31 |
| 12 | Unit is rich glutinous | 0.04 | 0.29 | 0.67 |
| 13 | Shen rice No. 1 | 0.02 | 0.32 | 0.68 |
| 14 | Shen Nong 2100 | 0.07 | 0.56 | 0.93 |
| 15 | Shen Nong 315 | 0.04 | 0.31 | 0.53 |
| 16 | Rich standing grain 70 | 0.02 | 0.37 | 0.43 |
| 17 | Shen rice No. 2 | 0.07 | 0.37 | 0.53 |
| 18 | The Liao Dynasty is glutinous | 0.05 | 0.47 | 0.92 |
| 19 | Open round-grained rice No. 1 | 0.04 | 0.42 | 0.66 |
| 20 | Rich standing grain 90 | 0.06 | 0.35 | 0.90 |
| 21 | Shen Nong 9014 | 0.05 | 0.47 | 1.06 |
| 22 | Shen rice No. 3 | 0.09 | 0.52 | 0.71 |
| 23 | The Liao Dynasty excellent 5273 | 0.10 | 0.57 | 0.79 |
| 24 | The Liaohe River is glutinous | 0.12 | 0.32 | 0.66 |
| 25 | The Liao Dynasty's star 17 | 0.18 | 0.87 | 1.21 |
| 26 | The Liao Dynasty's star 11 | 0.18 | 0.54 | 0.84 |
| 27 | The Liao Dynasty opens 79 | 0.17 | 0.42 | 0.81 |
| 28 | The Liao Dynasty excellent 1052 | 0.22 | 0.41 | 0.66 |
| 29 | The Liao Dynasty excellent 2006 | 0.24 | 0.59 | 0.69 |
| 30 | Feng You 505 | 0.17 | 0.36 | 0.45 |
| 31 | Liaogeng No.454 | 0.19 | 0.45 | 0.81 |
| 32 | No. 9, the Liao Dynasty's round-grained rice | 0.17 | 0.33 | 1.31 |
| 33 | The Liao Dynasty excellent 548 | 0.17 | 0.52 | 1.01 |
| 34 | The Liao Dynasty's star 13 | 0.15 | 0.49 | 0.55 |
| 35 | The Liao Dynasty's round-grained rice 294 | 0.15 | 0.34 | 0.49 |
| 36 | Upland rice 403 | 0.15 | 0.54 | 0.82 |
| 37 | Shen Xiang is glutinous | 0.16 | 0.51 | 0.85 |
| 38 | The Liao Dynasty's round-grained rice 371 | 0.15 | 0.36 | 0.44 |
| 39 | The Liao Dynasty's star 19 | 0.21 | 0.40 | 0.61 |
| 40 | Liaoxing No.1 | 0.21 | 0.47 | 1.33 |
Different modifying agents are handled down, and the brown rice Cd content of distant star 17 is seen Fig. 1, can be found out by figure, and after two kinds of modifying agents added respectively, distant star 17 brown rice cadmium content on cadmium gradient (2.5mg/Kg, 5.0mg/Kg) soil all significantly reduced (p＜0.05).Wherein, the processing brown rice Cd content that adds 5% flyash is lower than the national food sanitary quality standard (0.2mg/Kg) of paddy rice less than 0.2mg/Kg, reaches the standard of safe handling; And lime, though the adding of 1% fine coal and 3% flyash has significantly reduced effect to brown rice Cd content, when soil Cd content was 2.5mg/Kg and 5.0mg/Kg, the brown rice cadmium content of distant star 17 did not reach the standard of safe handling yet greater than 0.2mg/Kg.
Claims (7)
1. the full modifying agent of producing of a suitable cadmium pollution paddy field semilate rice meter ampere is characterized in that: apply lime and/or flyash as modifying agent to the contaminated soil of plantation rice.
2. by the full modifying agent of producing of the described suitable cadmium pollution of claim 1 paddy field semilate rice meter ampere, it is characterized in that: the applied amount of said lime or flyash is respectively 0.1%～10% of contaminated soil weight percent.
3. by claim 1 or the full modifying agent of producing of 2 described suitable cadmium pollution paddy field semilate rice meter amperes, it is characterized in that: the lime applied amount is 0.5%～1.2% of a contaminated soil weight percent; The flyash applied amount is a contaminated soil weight percent 0.5%～6%.
4. by the full modifying agent of producing of the described suitable cadmium pollution of claim 1 paddy field semilate rice meter ampere; It is characterized in that: the modifying agent that applies lime and/or flyash to the contaminated soil of rice cultivation; Make the paddy rice can normal growth, realize the purpose of polluted agricultural land safety in production.
5. by the full modifying agent of producing of the described suitable cadmium pollution of claim 4 paddy field semilate rice meter ampere, it is characterized in that: the rice varieties of said plantation is the low cadmium-accumulation rice varieties.
6. by the full modifying agent of producing of the described suitable cadmium pollution of claim 5 paddy field semilate rice meter ampere, it is characterized in that: said low cadmium-accumulation rice varieties is Shen rice No. 4.
7. by the full modifying agent of producing of the described suitable cadmium pollution of claim 1 paddy field semilate rice meter ampere, it is characterized in that: modifying agent and contaminated soil are mixed in upper soll layer, treat soaked field leveling back rice transplanting.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020418A1 (en) * | 2011-08-10 | 2013-02-14 | 中国科学院沈阳应用生态研究所 | Safe utilization method for cadmium-polluted farmland |
| CN103250485A (en) * | 2013-06-05 | 2013-08-21 | 湖南农业大学 | Method for comprehensively controlling cadmium pollution of rice by utilizing modifier and agricultural technology |
| CN107801461A (en) * | 2017-11-23 | 2018-03-16 | 中国科学院南京土壤研究所 | Rice field base applies passivating material drop living imposed with tillering stage and combining for zinc fertilizer antagonism drops cadmium method |
| CN109220652A (en) * | 2018-09-26 | 2019-01-18 | 天津市农业质量标准与检测技术研究所 | A method of Brown Rice cadmium content is reduced using soil root system is adjusted |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020418A1 (en) * | 2011-08-10 | 2013-02-14 | 中国科学院沈阳应用生态研究所 | Safe utilization method for cadmium-polluted farmland |
| CN103250485A (en) * | 2013-06-05 | 2013-08-21 | 湖南农业大学 | Method for comprehensively controlling cadmium pollution of rice by utilizing modifier and agricultural technology |
| CN103250485B (en) * | 2013-06-05 | 2014-05-21 | 湖南农业大学 | Method for comprehensively controlling cadmium pollution of rice by utilizing modifier and agricultural technology |
| CN107801461A (en) * | 2017-11-23 | 2018-03-16 | 中国科学院南京土壤研究所 | Rice field base applies passivating material drop living imposed with tillering stage and combining for zinc fertilizer antagonism drops cadmium method |
| CN109220652A (en) * | 2018-09-26 | 2019-01-18 | 天津市农业质量标准与检测技术研究所 | A method of Brown Rice cadmium content is reduced using soil root system is adjusted |
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Application publication date: 20120328 |