CN110523773A - A method of rice of persistently keeping the safety in production on slight cadmium pollution acid soil - Google Patents
A method of rice of persistently keeping the safety in production on slight cadmium pollution acid soil Download PDFInfo
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- CN110523773A CN110523773A CN201910874234.1A CN201910874234A CN110523773A CN 110523773 A CN110523773 A CN 110523773A CN 201910874234 A CN201910874234 A CN 201910874234A CN 110523773 A CN110523773 A CN 110523773A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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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
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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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
- B09C2101/00—In situ
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
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- Mycology (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
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- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Fertilizers (AREA)
Abstract
The present invention provides a kind of method of rice of persistently keeping the safety in production in cadmium pollution acid soil, low Cd accumulation rice is selected to carry out transplanting plantation in double rice cropping system, cooperate drowned rice field between low Cd accumulation rice at whole growth periods, lime is uniformly spread fertilizer over the fields respectively in slight cadmium pollution acid soil before early rice transplanting and after late rice transplanting, early rice season, lime turn over mixing thoroughly after spreading fertilizer over the fields to the slight cadmium pollution acid soil, cooperated nitrogen, phosphorus, potash fertilizer to apply together organic commercial fertilizer after soil water balance.Operation of the present invention is simple, reliable, does not increase peasant's process and labor intensity, is easy to implement completely, it is easy to be received by farmer, uses rear quick, the effect ideal in large-area applications, to prevention and treatment acid soil heavy metal pollution, quality of rice safety in production significant effect is persistently ensured.
Description
Technical field
The present invention relates to agricultural environment fields, more particularly to one kind persistently to keep the safety in production on slight cadmium pollution acid soil
The technical method of rice.
Background technique
In recent years, industrialization and urbanization process in China's is constantly accelerated, and a large amount of pollutants arbitrarily discharge, and lacks in addition effective
Control measure so that heavy metal pollution of soil increasingly sharpens, contaminated area expands year by year, and local problem is prominent, controls to environment
Reason causes extreme difficulties.Heavy metal pollution of soil existence range is wide, the time is long, damage ratio is more covert, can not be biodegradable simultaneously
It may be constantly enriched in vivo by food chain, be constituted a serious threat to the agricultural product quality and safety of contaminated areas.
Events such as " cadmium rice " " colored rices " occur in succession within especially 2012~2015 years, huge, serious resistance is impacted to rice market
Hinder rice to local and overseas circulations, reduces the development of rice competitiveness in the domestic and international markets and Rice Enterprises, strike
Peasant plants the enthusiasm of grain, brings and seriously affects to national grain-production, therefore integrates to heavy metal pollution farmland
It administers extremely urgent.Currently, all multi-methods including physics, chemistry, biology and agronomic measures be widely used in it is light,
In, severe heavy metals in farmland pollution control field, but many control measures there is it is at high cost, complicated for operation, to soil fertility
It has damage, there are the problems such as secondary pollution, it is difficult to which realization is widely applied.How to select and develop optimization, it is most economical,
Most effective heavy metals in farmland repairing and treating technical method is always the technical problem for perplexing those skilled in the art.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, emphasis are situated between
It continues how on slight cadmium pollution acid soil, with a kind of low cost, sustainability, resource-effective, easy to operate and can be effective
The method for reducing the accumulation of rice cadmium in slight cadmium pollution acid soil is realized that rice is persistently kept the safety in production, is reached in production
The purpose of improvement, this can not only provide scientific basis for the improvement of national slight cadmium pollution acid soil, additionally it is possible to push the whole nation
The sustainable development in arable land simultaneously plays a significant role to promoting food safety, increasing peasant income, rural development and agricultural to revitalize.
In order to solve the above technical problems, technical solution proposed by the present invention is to provide a kind of slight cadmium pollution acid soil of reduction
The method of cadmium accumulation for paddy rice in earth includes the following steps: to select low Cd accumulation rice varieties to carry out transplanting plantation in double rice cropping system；
Cooperate drowned rice field between rice at whole growth periods；Lime is uniformly spread fertilizer over the fields respectively before early rice transplanting and after late rice transplanting dirty in slight cadmium
It contaminates in acid soil；Lime turn over mixing thoroughly after spreading fertilizer over the fields to the slight cadmium pollution acid soil, after soil water balance
Organic commercial fertilizer is administered simultaneously in cooperation nitrogen, phosphorus, potash fertilizer together.Slight cadmium pollution acid soil soil after spreading fertilizer over the fields quick lime
PH value increases to promote cadmium and aluminosilicate secondary mineral or organic colloid in soil to form co-precipitation state, to reduce soil
The validity of cadmium in earth；The slight cadmium pollution acid soil can increase soil environment capacity after applying organic commercial fertilizer
Improve soil texture and physicochemical character with abilities, raising biological activity of soils such as enhancing soil fertilizer, water conservations, it is often more important that
Reduce the activity of soil available cadmium.
Above-mentioned method, in the slight cadmium pollution acid soil, soil cadmium containing full dose is≤0.6mg/kg and late rice rice
Cadmium content is 0.2-0.4mg/kg.
Preferably, the soil pH of the slight cadmium pollution acid soil is 4.5~6.5.
Preferably, the lime is quick lime, and main component is CaO≤70%, and annual application in two dressings is once early rice
100kg/ mus of application in first 20 days is transplanted, once applies 50kg/ mus for 1 month i.e. late tillering state after late rice transplanting.
Preferably, cadmium content is lower than 0.5mg/kg in the organic commercial fertilizer, and amount of application is 80kg/ mus~100kg/ mus,
Fine day and cloudy day should be selected using artificial application or the mechanical method application spread fertilizer over the fields, forbid to spread fertilizer over the fields in contrary wind weather and rainy day.
Preferably, early 17, Hunan morning Xian 45 is praised in the low Cd accumulation rice varieties in early rice selection, in pool two excellent 215
One or more；Late rice selects Hunan evening Xian 13, H excellent one or more of 518.
Preferably, it during the time of infertility drowned rice field, controls cadmium content in irrigation water and is lower than 0.005mg/L, pipe
Managing the period is to keep field to have water according to rice different growing from entire growth period during shoot transplanting equipment Shi Qizhi complete ripeness
Layer, 7d or so is fallen dry naturally before gathering in, and ensures that there is 3~5cm water in field in 20d after 20d to heading especially before heading
Layer.
Preferably, the time of the soil water balance is at least 2 weeks.
The technical principle of aforementioned present invention technical solution is based primarily upon the following:
(1) by application quick lime, significantly improve the pH value of slight cadmium pollution acid soil, to promote cadmium in soil
Co-precipitation state is formed with aluminosilicate secondary mineral or organic colloid, to reduce the validity of cadmium in soil, ion is anti-
Answer equation main are as follows: Cd2++2OH--←→Cd(OH)2；
(2) because containing a large amount of calcium ions in the preferred quick lime (CaO), because in calcium ion and soil after being manured into soil
Cadmium ion competes The Rhizosphere of Rice and absorbs site, can theoretically further decrease rice to the uptake and accumulation of cadmium；
(3) after being manured into soil, soil can be increased because containing N P and K and organic matter in the preferred organic commercial fertilizer
The abilities such as environmental carrying capacity and enhancing soil fertilizer, water conservation, improve biological activity of soil, improve soil texture and physicochemical character, reason
By the activity that can above further decrease soil available cadmium and prevent rice to the uptake and accumulation of cadmium；
(4) while being passivated to cadmium active in farmland and antagonism, cadmium low absorption rice varieties are selected, further benefit
The cadmium in rice is reduced to the genotypic difference that Cd uptake is accumulated with different rice varieties to accumulate.
Compared with the prior art, the advantages of the present invention are as follows:
1, method of the invention is to solve the problems, such as that rice cadmium pollution is most direct, most economical, one of the most effective ways.This
Technical operation is simple, reliable, does not increase peasant's process and labor intensity, is easy to implement completely, is easy to be received by farmer, uses
Quick afterwards, effect is ideal in large-area applications, to prevention and treatment acid soil heavy metal pollution, persistently ensures quality of rice safety
Production has a very important significance.
2, the technology of application quick lime is used in method of the invention, the quick lime is not only from a wealth of sources, at low cost,
Calcium rich in can make fertilizer application, can promote plant growth, have certain production-increasing function, and its special reason for having
Change property, there is certain slow release because it is slightly soluble in water, soil micro-loop will not be destroyed because pH is sharply increased after being manured into soil
Border can make soil pH maintain a certain range in a long time, and the life of cadmium in acidic cadmium polluted paddy soil can be effectively reduced
Object validity；In addition, quick lime has the effects that certain sterilization and disinsection, be conducive to prevent and treat soil-borne disease, after being manured into soil not
It will affect plant growth.
3, the technology that application organic commercial fertilizer is used in method of the invention is that heavy metal pollution arable land is maintained to administer
Effect sustainability, the key factor for ensureing crop and yield.
4, low Cd accumulation rice varieties used in method of the invention, the green of rice cadmium exposure can be reduced by belonging to
Color technology, is of great significance to preserving the ecological environment, complementary with green technology by chemical remediation, can effectively reduce acidity
The cadmium accumulation of slight cadmium pollution soil rice.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is that the effect picture of Brown Rice cadmium content is reduced after handling in embodiment 1 using the method for the present invention (in Fig. 1
Alphabetical a~c indicates significance of difference p < 0.05 of LSD inspection between different disposal).
Fig. 2 is in embodiment 2 using the effect picture for reducing Brown Rice cadmium content after the method for the present invention processing.
Specific embodiment
The present invention is described in further details below in conjunction with Figure of description and specific embodiment, but not therefore and
It limits the scope of the invention.
Unless otherwise defined, all technical terms used hereinafter are generally understood meaning phase with those skilled in the art
Together.Technical term used herein is intended merely to the purpose of description specific embodiment, and it is of the invention to be not intended to limitation
Protection scope.Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through
Market is commercially available or can be prepared by existing method.
Embodiment 1:
A kind of method of rice of the invention of persistently keeping the safety in production in slight cadmium pollution acid soil, the present embodiment processing
Object be the slight cadmium pollution acid soil in the Xiangtan County river mouth town village Shi Feng, late rice brown rice cadmium content be 0.40mg/kg, the soil
Character is as shown in table 1 below.
Table 1: for the chemical property of examination soil in embodiment 1
The present embodiment is persistently kept the safety in production the method for rice in slight cadmium pollution acid soil, is included the following steps:
Early rice, which is transplanted first 20 days, uniformly spreads fertilizer over the fields quick lime in slight cadmium pollution acid soil, and amount of application is 60kg/ mus,
Quick lime turn over mixing thoroughly after spreading fertilizer over the fields to the slight cadmium pollution acid soil, after soil water balance 15 days cooperate nitrogen,
Organic commercial fertilizer is administered simultaneously in phosphorus, potash fertilizer together, and organic commercial fertilizer amount of application is 80kg/ mus, then transplants low Cd accumulation early rice
(the present embodiment selects excellent 189) of strain two and the low Cd accumulation Varieties In Late Rice of transplanting (the present embodiment selects Hunan evening Xian 12), evening to kind
1 month i.e. late tillering state, uniformly spread fertilizer over the fields quick lime in slight cadmium pollution acid soil after rice transplanting, amount of application 60kg/
Mu；Water management uses time of infertility drowned rice field, and the cadmium content controlled in irrigation water is lower than 0.005mg/L, completes to acidity
The combination prevention and treatment of slight cadmium pollution soil.
For the technical effect for comparing the present embodiment 1, using the processing of the present embodiment as T5, the another following 4 processing work of setting
For control (see Table 2 for details).
Table 2 handles title and content
In triplicate, random district's groups arrange for each of the above processing, and protection row is arranged.Nitrogen, phosphorus, the potassium nutrition of all processing
Amount of application is consistent, and Pesticide use and other management measures are consistent.Brown Rice cadmium content is using nitric acid-perchloric acid mixing
Atomic absorption spectrophotometry (graphite furnace) measures after resolution.
Test result shows to influence significant (figure one) to cadmium content in Brown Rice using the present embodiment method.Pass through ratio
Compared with T1 with the T2 Brown Rice cadmium content handled it is found that strain two excellent 189 praises early No. 39 in compares, excellent 189 Brown Rice of strain two
Cadmium content is relatively low, the brown rice cadmium content difference 15.03% of two kinds；Hunan evening Xian 12 account for the excellent China in day and compare, Hunan evening
No. 12 Brown Rice cadmium contents of Xian are relatively low, the brown rice cadmium content difference 10.82% of two kinds.This illustrates low Cd accumulation water
There are larger differences for cadmium accumulation between rice varieties and conventional rice kind.In all processing, to use the method for the present invention (low cadmium rice
Kind+drowned rice field+application quick lime+organic commercial fertilizer) Brown Rice cadmium content is minimum and significant difference, early rice season compared with
T1 processing reduces by 76.14%, and late rice season reduces by 66.67% compared with T1 processing, has reached national food safety standard (GB2762-
2017).It can be seen that method of the invention is obvious to the effect for reducing cadmium accumulation for paddy rice.
Embodiment 2:
The present embodiment is field technology demonstration, has carried out the field of more than 100 mus in the selected regional Xiangtan County town the Hua Shi village Yan Bu
Between show-how, the full cadmium content of demonstration area paddy soil be 0.25mg/kg~0.44mg/kg, late Cd concentration of brown rice be 0.248~
0.370, pH value is 4.68~6.5.
The method of cadmium accumulation for paddy rice in the slight cadmium pollution acid soil of reduction of the present embodiment, comprising the following steps:
Early rice, which is transplanted first 20 days, uniformly spreads fertilizer over the fields quick lime in slight cadmium pollution acid soil, amount of application 100kg/
Mu, quick lime turn over mixing thoroughly, cooperate after soil water balance 15 days after spreading fertilizer over the fields to the slight cadmium pollution acid soil
Organic commercial fertilizer is administered simultaneously in nitrogen, phosphorus, potash fertilizer together, and organic commercial fertilizer amount of application is 100kg/ mus, then transplants low Cd accumulation
(the present embodiment selects excellent 189) of strain two and the low Cd accumulation Varieties In Late Rice of transplanting, and (the present embodiment selects Hunan evening Xian 13 to early-paddy brown rice
Number), 1 month i.e. late tillering state, uniformly spread fertilizer over the fields quick lime in slight cadmium pollution acid soil after late rice transplanting, and amount of application is
50kg/ mus；Water management uses time of infertility drowned rice field, controls the cadmium content in irrigation water and is lower than 0.005mg/L, completion pair
The combination prevention and treatment of acid slight cadmium pollution soil.
For the technical effect for comparing the present embodiment, using the processing of the present embodiment as T1, another setting is following to compare CK:
CK, local rice cultivation kind Hunan morning Xian No. 24 numbers and Hunan Feng You 9 (non-cadmium low absorption rice varieties), water management
Using normal irrigation；
T1, low Cd accumulation early-paddy brown rice+spread fertilizer over the fields quick lime+drowned rice field+application organic commercial fertilizer；
Nitrogen, phosphorus, the potassium nutrition amount of application of two above processing are consistent, and Pesticide use and other management measures are uniform
It causes.Brown Rice cadmium content is measured using atomic absorption spectrophotometry (graphite furnace) after nitric acid-perchloric acid mixing resolution.
Measurement result is as shown in Fig. 2, be 0.074mg/kg, comparison using the Early rice-ratoon rice cadmium content mean value that the present invention obtains
73.94% is averagely reduced according to CK (0.284mg/kg)；It is 0.136mg/ using the late rice brown rice cadmium content mean value that the present invention obtains
Kg averagely reduces by 53.58% than control CK (0.293mg/kg).The Brown Rice cadmium content obtained in demonstration area using the present invention
Basically reach national food safety standard (GB2762-2017).As it can be seen that combination technique mode of the invention can significantly reduce rice
Brown rice cadmium content.
Claims (8)
1. a kind of method for rice of persistently keeping the safety in production in cadmium pollution acid soil includes the following steps: to select in double rice cropping system
It selects low Cd accumulation rice and carries out transplanting plantation；Cooperate drowned rice field between low Cd accumulation rice at whole growth periods；It is before early rice transplanting and late
Lime is uniformly spread fertilizer over the fields respectively in slight cadmium pollution acid soil after rice transplanting；Early rice season lime spread fertilizer over the fields after to the slight cadmium
Pollution acid soil turn over mixing thoroughly, cooperates nitrogen, phosphorus, potash fertilizer to apply together organic commercial fertilizer after soil water balance.
2. the method for rice according to claim 1 of persistently keeping the safety in production in slight cadmium pollution acid soil, feature
It is, the slight cadmium pollution acid soil region, late Cd concentration of brown rice is 0.2-0.4mg/kg, and the full cadmium content of soil≤
0.6mg/kg；Soil pH is 4.5~6.5.
3. the method for rice according to claim 1 of persistently keeping the safety in production in slight cadmium pollution acid soil, feature
It is, it is excellent that early 17, Hunan morning Xian 45, pool two is praised in the early-paddy brown rice selection in the low Cd accumulation rice varieties in the double rice cropping system
One or more of 215；Varieties In Late Rice selects Hunan evening Xian 13, H excellent one or more of 518.
4. rice as claimed in any of claims 1 to 3 of persistently keeping the safety in production in slight cadmium pollution acid soil
Method, which is characterized in that the lime be quick lime, aoxidize calcium content≤70%.
5. rice as claimed in any of claims 1 to 3 of persistently keeping the safety in production in slight cadmium pollution acid soil
Method, which is characterized in that quick lime in a manner of manually or mechanically early rice transplant 60~100kg/ mus of application in preceding 20 days with
1 month i.e. late tillering state, applies 50~60kg/ mus after late rice transplanting.
6. rice as claimed in any of claims 1 to 3 of persistently keeping the safety in production in slight cadmium pollution acid soil
Method, which is characterized in that in the organic commercial fertilizer cadmium content be lower than 0.5mg/kg, after lime is spread fertilizer over the fields 15 days to early rice move
Cultivation is spread fertilizer over the fields between early period according to 80~100kg/ mus of standard.
7. rice as claimed in any of claims 1 to 3 of persistently keeping the safety in production in slight cadmium pollution acid soil
Method, which is characterized in that during the time of infertility drowned rice field, control irrigation water in cadmium content be lower than 0.005mg/L；
The drowned rice field period is to be kept from the entire growth period during shoot transplanting equipment Shi Qizhi complete ripeness according to rice different growing
There is water layer in field, until harvesting falls dry for preceding 7 days naturally, ensures that field has 3 in 20 days to after earing within 20 days especially before heading
~5cm water layer.
8. the method for rice of persistently keeping the safety in production in slight cadmium pollution acid soil according to claim 1 or 5, special
Sign is that the time of the soil water balance is at least 2 weeks.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872517A (en) * | 2019-12-10 | 2020-03-10 | 广东省生态环境技术研究所 | Special lime material for cadmium-polluted acid soil as well as preparation method and application thereof |
| CN112453044A (en) * | 2020-10-17 | 2021-03-09 | 安徽农业大学 | Method for inhibiting cadmium accumulation of rice in acid cadmium polluted soil in rice and wheat crop rotation |
| CN114226448A (en) * | 2020-09-09 | 2022-03-25 | 农业农村部环境保护科研监测所 | Method for restoring cadmium-polluted dry farmland by using plant interplanting |
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| JP2004222622A (en) * | 2003-01-24 | 2004-08-12 | Denki Kagaku Kogyo Kk | Field-treating method for inhibiting cadmium absorption in paddy rice |
| CN103004439A (en) * | 2012-12-25 | 2013-04-03 | 湖南省土壤肥料研究所 | Combined prevention and control method for cadmium exceeding of rice in medium-light cadmium-polluted soil |
| CN108393344A (en) * | 2018-03-01 | 2018-08-14 | 湖南省农业环境生态研究所 | A method of reducing cadmium accumulation for paddy rice in acid slight cadmium pollution soil |
| CN108405594A (en) * | 2018-03-01 | 2018-08-17 | 湖南省农业环境生态研究所 | A kind of acidic cadmium polluted soil Opsonizing method inhibiting cadmium accumulation for paddy rice |
| CN108718962A (en) * | 2018-04-26 | 2018-11-02 | 湖南玖恪土壤与环境科技有限公司 | A method of reducing paddy fields in south china rice cadmium content |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004222622A (en) * | 2003-01-24 | 2004-08-12 | Denki Kagaku Kogyo Kk | Field-treating method for inhibiting cadmium absorption in paddy rice |
| CN103004439A (en) * | 2012-12-25 | 2013-04-03 | 湖南省土壤肥料研究所 | Combined prevention and control method for cadmium exceeding of rice in medium-light cadmium-polluted soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872517A (en) * | 2019-12-10 | 2020-03-10 | 广东省生态环境技术研究所 | Special lime material for cadmium-polluted acid soil as well as preparation method and application thereof |
| CN114226448A (en) * | 2020-09-09 | 2022-03-25 | 农业农村部环境保护科研监测所 | Method for restoring cadmium-polluted dry farmland by using plant interplanting |
| CN112453044A (en) * | 2020-10-17 | 2021-03-09 | 安徽农业大学 | Method for inhibiting cadmium accumulation of rice in acid cadmium polluted soil in rice and wheat crop rotation |
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