CN110511098A - It is a kind of improve heavy metallic activation characteristic of acid red soil composite soil conditioner and application - Google Patents
It is a kind of improve heavy metallic activation characteristic of acid red soil composite soil conditioner and application Download PDFInfo
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- CN110511098A CN110511098A CN201910744426.0A CN201910744426A CN110511098A CN 110511098 A CN110511098 A CN 110511098A CN 201910744426 A CN201910744426 A CN 201910744426A CN 110511098 A CN110511098 A CN 110511098A
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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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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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Abstract
The present invention relates to a kind of composite soil conditioner of characteristic of acid red soil for improving heavy metallic activation and applications, the composite soil conditioner includes following components by weight percent: 320-380 parts of urea, 140-150 parts of monoammonium phosphate, 130-160 parts of potassium chloride, 700-3000 parts of special shellfish calcium soil conditioner.Composite soil conditioner used in the present invention can increase yield of vegetables 9.2%-43.8%, reduce vegetables heavy metal cadmium (Cd) content 13.3%-68.0%, lead (Pb) content 12.4%-71.1%, and improve soil pH value 2.7%-17.6% after vegetables harvest, exchangeable hydrogen 7.4%-42.2%, the exchangeable aluminum 20.5%-55.4% of soil are reduced, while reducing soil available Cd content 15.6%-66.1%, available state Pb content 3.6%-34.7%.Therefore, the present invention can effectively administer khoai acidified soil, and obtain the victual of high yield and high quality.
Description
Technical field
It is especially a kind of for improving answering for the characteristic of acid red soil of heavy metallic activation the present invention relates to agricultural plantation technology field
Close soil conditioner and its application.
Background technique
The Red Earth In Southern China area gross area is up to 1.2 × 106km2, account for about the 12% of the national soil gross area, this area's hydro-thermal
Resourceful, productive potentialities are huge, in occupation of extremely important status in China's agricultural and socio-economic development.
However, since this area's agricultural land soil is by the natural conditions and unreasonable high-intensitive exploitation etc. such as natural high-temperature is rainy
The double influence of human factor, especially in recent years due to a large amount of applications of acid deposition harm aggravation and physiological phenomenon chemical fertilizer, soil
Earth acidification problem has been on the rise, and heavy metal-polluted soil activation causes agricultural product heavy metal pollution problem also to happen occasionally, seriously
Hinder the sustainable efficient utilization of this area's agricultural land soil.
Although liming can alleviate soil acidification problem, chronic administration lime is easy to cause the plate of agricultural land soil
Knot, is unfavorable for the growth of crops.
With the development of science and technology for the activity for solving Farmland Soil Acidification, being passivated heavy metal-polluted soil, a series of acidification soil
Earth conditioner emerges, but soil conditioner product limits in the prevalence of the deficiencies of cumbersome, expensive is prepared at present
Its scale of mass production and large scale application.
Therefore, development resources are abundant, preparation is easy, reasonable price acidic soil conditioner product still needs from now on into one
Step is reinforced.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of, the composite soil containing special shellfish calcium soil conditioner is improved
The application of agent and the composite soil conditioner on the characteristic of acid red soil of improvement heavy metallic activation, raising yield of vegetables.
Concrete scheme is as follows:
The present invention provides a kind of composite soil conditioner of characteristic of acid red soil for improving heavy metallic activation, including following weight group
Point: 320-380 parts of urea, 140-150 parts of monoammonium phosphate, 130-160 parts of potassium chloride, special shellfish calcium soil conditioner 700-3000
Part.
Further, the composite soil conditioner includes following components by weight percent: 360 parts of urea, 144 parts of monoammonium phosphate,
150 parts of potassium chloride, 750-3000 parts of special shellfish calcium soil conditioner.
Further, the content of nitrogen is 46% in the urea；The content of potassium oxide is 60% in potassium chloride.
Further, the content of nitrogen is 10% in the monoammonium phosphate, and the content of phosphorus pentoxide is 50%.
Further, the content of calcium oxide is greater than 45% in the special shellfish calcium soil conditioner, pH value 8.5-10.5；
Spy's shellfish calcium soil conditioner is the soil conditioner of Marta agricultural development Co., Ltd, Fujian Province production.
The present invention also provides a kind of above-mentioned composite soil conditioner the characteristic of acid red soil for improving heavy metallic activation application.
The present invention also provides a kind of application of above-mentioned composite soil conditioner on vegetable cultivation.
Further, the application includes: the application for increasing yield of vegetables, improves soil pH value after vegetables harvest and answer
With, reduce soil available content of beary metal application one of or it is a variety of.
Further, the dosage of the composite soil conditioner is 1404-3654kg/hm2.
The present invention also provides a kind of methods of characteristic of acid red soil for improving heavy metallic activation, including using above-mentioned composite soil
Conditioner is applied to the step in red soil site preparation as base manure.
Wherein:
Spy's shellfish calcium soil conditioner used in the present invention is the acidity of Marta agricultural development Co., Ltd, Fujian Province production
Soil conditioner, spy's shellfish calcium soil conditioner are with China coast resource exception seafood waste (oyster shell) abundant for original
Material, using advanced " protectiveness the bakes segmentation activation " deep-processing process such as production technology and particle size sorting, the one kind prepared
Novel soil conditioner.This new soil recuperation agent farthest remains oyster on the basis of obtaining calcium oxide
The organic nutrient of shell, and have the characteristics that be granulated uniformly (0.28mm), large specific surface area, it is a kind of excellent acid soil conditioning
Agent product.For CaO content >=45%, pH of special shellfish calcium soil conditioner between 8.5-10.5, product is in strong basicity, to soil acid
The improvement of change has obvious effects on.
The content of special shellfish calcium soil conditioner is preferably 750-3000 parts in composite soil conditioner of the present invention, specifically answers
When for crop planting, special shellfish calcium soil conditioner amount of application is in 750-3000kg/hm2Between, reason is when special shellfish
Calcium soil conditioner amount of application is in 750-3000kg/hm2Between, crop yield is substantially showed with special shellfish calcium soil conditioning
The increase of agent amount of application and increased trend, also, when special shellfish calcium soil conditioner amount of application is 2250kg/hm2When, crops
It is to reach highest that yield aggregate performance, which goes out, and the application effect in vegetables production generally shows also best.
Nitrogen, phosphorus, potassium are three big nutrients necessary to crop growth, be plant requirement and harvest when the amount of taking away compared with
More nutrients, and the quantity that they return to soil by way of stubble and root is few, it is therefore desirable to a large amount of supplements.
Wherein: nitrogen is the component part of each living cells, rich in close relations, the nitrogen pair lacked with blade Determination of Chlorophyll content of nitrogen
The influence of plant growth and development be it is fairly obvious, when nitrogen abundance, plant can synthesize more protein, promote cell
Division and growth, therefore plant leaf area increases fastly, blade is big and thick, and color is dark green, can more effectively promote the photosynthetic of blade
Effect.Content of the phosphorus in plant is only second to nitrogen and potassium, and photosynthesis, respiration, energy storage are participated in plant
With transmitting, cell division, cell increase and some other process, the quality of agricultural product is improved, increases plant and adapts to external environment
The ability of condition enhances the disease resistance of some plants, drought resisting and cold tolerance.Potassium is the main nutrient elements of plant, while
It is one of the three elements for often influencing crop yield in soil because of insufficient supply, the metabolism of major function and plant has
It closes.Potassium abundance in plant metabolism active organ and tissue is higher, has and guarantees going on smoothly, promoting for various metabolic processes
Into plant growth, the enhancing functions such as disease and insect resistance and lodging tolerance.Potassium can promote photosynthesis, and potassium deficiency subtracts photosynthesis
It is weak.Another feature of potassium contributes to the resistance of crop.The important physiological action of potassium first is that enhancing cell to environmental condition
Adjustment effect.Potassium can enhance plant to the suffertibility of various undesirable conditions, such as arid, low temperature, salt content, disease pest endanger,
Lodging etc..
For nitrogen, phosphorus, the big nutrient of potassium three, the present invention is answered in a manner of urea, monoammonium phosphate, potassium chloride
With: the optimal content of urea used in the present invention is defined as 360 parts, and wherein the content of nitrogen is 46%, at this time
Contain 165.6 parts of purity nitrogen in chemical fertilizer；The optimal content of monoammonium phosphate used in the present invention is defined as 144 parts, and wherein nitrogen
The content of element is 10%, and the content of P elements is with phosphorus pentoxide (P2O5) it is calculated as 50%, contain purity nitrogen 11.4 in chemical fertilizer at this time
Part, pure P2O572 parts；The optimal content of potassium chloride used in the present invention is defined as 150 parts, and wherein potassium element contains
Amount is with potassium oxide (K2O it) is calculated as 60%, contains pure K in chemical fertilizer at this time290 parts of O.This is because according to early period about common short-term leaf
Class vegetables are to the result of study of the Nutrient Absorption feature of the big nutrient of N P and K three, when containing 180 parts of pure N, pure P in chemical fertilizer2O5
72 parts, pure K2At 90 parts of O, i.e. 360 parts of urea, at 144 parts of monoammonium phosphate, 150 parts of potassium chloride, the growth of vegetables is put up the best performance.
Prepare composite soil conditioner of the invention, it is only necessary to by urea, monoammonium phosphate, potassium chloride, special shellfish calcium soil tune
Reason agent, which is weighed and is sufficiently mixed by each components by weight percent, to stir evenly, and without other complicated preparation processes, suitable popularization makes
With.
Soil pH value, reduction after composite soil conditioner of the invention can be used for increasing yield of vegetables, improve vegetables harvest
Soil available content of beary metal.Wherein, when the dosage of composite soil conditioner is 2904kg/hm2When, it is available especially
Significant application effect.
The utility model has the advantages that
Raw material urea of the invention, monoammonium phosphate, potassium chloride, special shellfish calcium soil conditioner etc. are that conventional commercial can
, resourceful, reasonable price；When preparation, each raw material need to be only sufficiently mixed and be stirred evenly, preparation is easy, is easy to
It promotes.
Composite soil conditioner used in the present invention can increase yield of vegetables 9.2%-43.8%, reduce a vegetables huge sum of money
Belong to cadmium (Cd) content 13.3%-68.0%, lead (Pb) content 12.4%-71.1%, and improves soil pH value after vegetables harvest
2.7%-17.6%, reduces exchangeable hydrogen 7.4%-42.2%, the exchangeable aluminum 20.5%-55.4% of soil, while reducing soil
Available state Cd content 15.6%-66.1%, available state Pb content 3.6%-34.7% in earth.Therefore, the present invention can be controlled effectively
Khoai acidified soil is managed, and obtains the victual of high yield and high quality.
Specific embodiment
The embodiment of the present invention is described below in detail, the examples of the embodiments are intended to be used to explain the present invention, and cannot
It is interpreted as limitation of the present invention.In the examples where no specific technique or condition is specified, described according to the literature in the art
Technology or conditions or carried out according to product description.Reagents or instruments used without specified manufacturer is that can lead to
Cross the conventional products of commercially available acquisition.
Embodiment 1: composite soil conditioner is prepared
Component list (the unit: kg/hm of 1 each raw material of embodiment 1-4 of table2)
| Comparative example 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Urea | 360 | 380 | 320 | 360 | 354 |
| Monoammonium phosphate | 144 | 140 | 144 | 144 | 150 |
| Potassium chloride | 150 | 160 | 130 | 150 | 150 |
| Special shellfish calcium soil conditioner | 0 | 724 | 1500 | 2250 | 3000 |
| It is total | 654 | 1404 | 2094 | 2904 | 3654 |
Wherein, the content of nitrogen is 46% in the urea；The content of nitrogen is 10%, five in the monoammonium phosphate
The content for aoxidizing two phosphorus is 50%；The content of potassium oxide is 60% in the potassium chloride；Oxygen in spy's shellfish calcium soil conditioner
The content for changing calcium is greater than 45%, pH value 8.5-10.5；Spy's shellfish calcium soil conditioner is that Fujian Province's Marta agricultural development has
The soil conditioner of limit company production.
The raw material of embodiment 1-4 are weighed according to table 1, and each raw material are sufficiently mixed and are stirred evenly, and reality is prepared
Apply the composite soil conditioner of a 1-4 and the common fertilizer of comparative example 1.
Performance test: the common fertilizer of composite soil conditioner and comparative example 1 to embodiment 1-4 is tested for the property.
1. experimental field
Fujian Province, vegetable cultivation base, the town Xianyou County Gai Wei, topography and geomorphology with low mound pacifically based on, mean sea level
40m, the maritime monsoon climate of south subtropics, the summer, the winter, sunshine was sufficient, abundant rainfall, mean annual precipitation without severe cold without heat
1700mm, 23.1 DEG C of average temperature of the whole year.
2. testing soil
Testing plot soil types is grey yellow mud vegetable garden soil, the basic physicochemical character of soil are as follows: pH 4.5, the content of organic matter
14.26g/kg, total nitrogen content 0.64g/kg, content of tatal phosphorus 0.39g/kg, available phosphorus content 23.358g/kg, effective potassium content
0.83g/kg, Cd content 0.38mg/kg, Pb content 88mg/kg.
3. field trial
Control group (T0): the common fertilizer 654kg/hm of comparative example 1 is applied2。
Experimental group 1 (T1): the composite soil conditioner 1404kg/hm of embodiment 1 is applied2。
Experimental group 2 (T2): the composite soil conditioner 2094kg/hm of embodiment 1 is applied2。
Experimental group 3 (T3): the composite soil conditioner 2904kg/hm of embodiment 1 is applied2。
Experimental group 4 (T4): the composite soil conditioner 3654kg/hm of embodiment 1 is applied2。
It tests vegetable variety and field management situation is as follows:
1st batch, Brassica rapa L (Brassica rapa chinensis, Qingjian River Chinese cabbage) is sowed by the end of March, harvesting mid-May,
It samples and surveys production；
2nd batch, water spinach (Ipomoea aquatica, Thailand's gold axe), late May sowing, early July harvesting, sampling
And survey production.
The processing area of each test group is 20m2, it is repeated 3 times, random alignment.
4. the basic physicochemical character test method of soil and data analysing method
Soil basic physicochemical character measurement uses soil agrochemistry conventional method of analysis: pH value with potentiometry (Tu Shui is than 1:
2.5) it measures；Organic matter is measured with potassium bichromate titrimetric method；Full nitrogen is measured with semimicro Kelvin method；Full phosphorus is surveyed with molybdenum blue colorimetric method
It is fixed；Full potassium flame spectrophotometric determination；Alkali-hydrolyzable nitrogen is measured with alkaline hydrolysis diffusion method；Available phosphorus 0.05molL-1NaHCO3Extract-
Molybdenum blue colorimetric method measurement；Available potassium flame spectrophotometric determination；Vegetables heavy metal Cd, Pb assay use HNO3-H2O2Microwave
Resolution-graphite furnace atomic absorption spectrometry measurement.
Heavy metal-polluted soil available state Cd, Pb assay uses DTPA extraction-atomic absorption spectrophotometry, and soil can be handed over
Acidity is changed using potassium chloride extraction-titration (HJ 649-2013).
In sample continuous mode, while with national standard material sample (GBW10014- cabbage and GBW07405- soil
National standard substance) continuous mode progress quality control is boiled and analyzed to entirely disappearing.
Data processing uses SPSS11.0 statistical software and Microsoft Excel office software.
5. test results and analysis
Influence of the 5.1 different amounts composite soil conditioners to yield of vegetables
Test result (table 2) shows: compared with control group (T0), experimental group (T1, T2, T3 and T4) can be to a certain degree
The upper yield for increasing vegetables: output increased amplitude difference 11.0%-43.8% to the 1st batch of Brassica rapa L and the 2nd batch of water spinach and
9.2%-41.8%.Wherein, T3 and T4 processing to the effect of increasing production of vegetables relatively more preferably.
Variance analysis the result shows that: to the effect of increasing production of the 1st batch of Brassica rapa L, T3 processing extremely significantly (P < 0.01) is better than
T1 and T0 processing, and significant (P<0.05) is handled better than T2, but the difference between T4 processing is not significantly (P>0.05).To
The effect of increasing production of 2 batches of water spinaches, T3 processing is handled better than T2, T1 and T0 extremely significantly (P < 0.01), and significant (P < 0.05)
Better than T4 processing；And also (P < 0.01) is handled better than T2, T1 and T0 extremely significantly for T4 processing.This illustrates that T3, T4's uses measurer
There is more excellent effect.
Influence of the 2 different amounts spy's shellfish calcium soil conditioner of table to yield of vegetables
Note: the large and small mother that writes of the subsequent difference of same column numerical value respectively indicates difference up to extremely significant (P < 0.01) and shows in table
Horizontal (P < 0.05) level is write, similarly hereinafter.
Influence of the 5.2 different amounts composite soil conditioners to vegetables content of beary metal
Test result (table 3) shows: compared with control group (T0), experimental group (T1, T2, T3 and T4) can be to a certain degree
The upper heavy metal Cd and Pb content for reducing vegetables: to the heavy metal Cd and Pb content reduction amplitude difference of the 1st batch of Brassica rapa L
13.3%-54.9% and 12.4%-49.3%；To the heavy metal Cd and Pb content reduction amplitude difference of the 2nd batch of water spinach
25.4%-68.0% and 24.7%-71.1%.Wherein, reducing effect of the T3 and T4 processing to vegetables heavy metal Cd and Pb content
Generally perform better.
Variance analysis the result shows that: to the reducing effect of the 1st batch of Brassica rapa L heavy metal Cd and Pb content, T3 and T4 processing
It (P < 0.01) can be handled extremely significantly better than T2, T1 and T0, and the difference between T3 and T4 processing is not significant, T2 processing is also extremely aobvious
It lands and is handled better than T1 and T0；To the reducing effect of the 2nd batch of water spinach heavy metal Cd content, T3 and T4 processing can be extremely significant
Better than T2, T1 and T0 processing, and the difference between T3 and T4 processing is not significant；Reduction to the 2nd batch of water spinach heavy metal Pb content
Effect, T4, T3 and T2 processing can be handled better than T1 and T0 extremely significantly, but the difference between three is not significant.
Influence of the 3 different amounts spy's shellfish calcium soil conditioner of table to vegetables content of beary metal
The influence of soil pH and commutative acidity after 5.3 different amounts composite soil conditioners harvest vegetables
Test result (table 4) shows: compared with control group (T0), experimental group (T1, T2, T3 and T4) can be to a certain degree
The upper pH value for improving soil after 2 batches of vegetables harvest, increase rate 2.7%-17.6%；And reduce soil interchangeability hydrogen and
The content of interchangeability aluminium, reduction amplitude are respectively 7.4%-42.2% and 20.5%-55.4%.Wherein, T3 and T4 processing pair
It is best to improve the pH value of soil and the effect of reduction soil interchangeability aluminium after vegetables harvest.
Variance analysis the result shows that: T3 and T4 processing extremely significant (P < 0.01) is handled better than other, and at T3 and T4
Difference between reason is not significant；To the reducing effect for reducing the interchangeability hydrogen content of soil after vegetables harvest, T4 and T3 processing
It (P < 0.01) can be handled extremely significantly better than other, while T4 processing is handled better than T3 significantly (P < 0.05).
The influence of soil pH and commutative acidity after 4 different amounts spy shellfish calcium soil conditioner of table harvests 2 batches of vegetables
The influence of heavy metal-polluted soil bio-available Zn concentration after 5.4 different amounts composite soil conditioners harvest vegetables
Test result (table 5) shows: compared with control group (T0), experimental group (T1, T2, T3 and T4) can be to a certain degree
The upper available state Cd and available state Pb content for reducing soil after 2 batches of vegetables harvest, reduction amplitude be respectively 15.6%-66.1% and
3.6%-34.7%.Wherein, T3 and T4 processing is to reducing the available state Cd of soil and available state Pb content after 2 batches of vegetables harvest
Effect is best.
Variance analysis the result shows that: T3 and T4 processing extremely significant (P < 0.01) or significant (P < 0.05) are better than other
Processing, and the difference between T3 and T4 processing is not significant.
The influence of heavy metal-polluted soil bio-available Zn concentration after 5 different amounts spy shellfish calcium soil conditioner of table harvests 2 batches of vegetables
It can be seen that from the above test result herein using field plot trial method, by continuously planting 2 batches of vegetables
(Brassica rapa L and water spinach) has studied the composite soil conditioner of application different amounts to khoai yield of vegetables, dish weight gold
Belong to the influence of (cadmium Cd, lead Pb) content and soil aciditiy, heavy metal-polluted soil (Cd, Pb) bio-available Zn concentration, it was demonstrated that the present invention
Composite soil conditioner can effectively administer khoai acidified soil, and obtain the victual of high yield and high quality.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (10)
1. a kind of composite soil conditioner for the characteristic of acid red soil for improving heavy metallic activation, which is characterized in that including following weight group
Point: 320-380 parts of urea, 140-150 parts of monoammonium phosphate, 130-160 parts of potassium chloride, special shellfish calcium soil conditioner 700-3000
Part.
2. composite soil conditioner according to claim 1, which is characterized in that the composite soil conditioner includes following
Components by weight percent: 360 parts of urea, 144 parts of monoammonium phosphate, 150 parts of potassium chloride, 750-3000 parts of special shellfish calcium soil conditioner.
3. composite soil conditioner according to claim 1, which is characterized in that the content of nitrogen is in the urea
46%；The content of potassium oxide is 60% in potassium chloride.
4. composite soil conditioner according to claim 1, which is characterized in that the content of nitrogen in the monoammonium phosphate
It is 10%, the content of phosphorus pentoxide is 50%.
5. composite soil conditioner according to claim 1, which is characterized in that aoxidized in spy's shellfish calcium soil conditioner
The content of calcium is greater than 45%, pH value 8.5-10.5；
Spy's shellfish calcium soil conditioner is the soil conditioner of Marta agricultural development Co., Ltd, Fujian Province production.
6. a kind of any composite soil conditioner of claim 1-5 is improving answering for the characteristic of acid red soil of heavy metallic activation
With.
7. a kind of application of any composite soil conditioner of claim 1-5 on vegetable cultivation.
8. application of the composite soil conditioner according to claim 7 on vegetable cultivation, which is characterized in that the application
Include: increase yield of vegetables application, improve vegetables harvest after soil pH value application, reduction soil available heavy metal contain
One of application of amount is a variety of.
9. application of the composite soil conditioner according to claim 8 on vegetable cultivation, which is characterized in that described compound
The dosage of soil conditioner is 1404-3654kg/hm2。
10. a kind of method for the characteristic of acid red soil for improving heavy metallic activation, is characterized in that, including use any institute of claim 1-5
The composite soil conditioner stated is applied to the step in red soil site preparation as base manure.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103450906A (en) * | 2013-09-23 | 2013-12-18 | 福建省玛塔农业发展有限公司 | Soil conditioner and preparation method thereof |
| CN106867541A (en) * | 2017-02-23 | 2017-06-20 | 福建省玛塔农业发展有限公司 | A kind of environment-friendly type heavy metal renovation agent and its application and slow release heavy metal remediation fertilizer |
| CN106883859A (en) * | 2017-02-23 | 2017-06-23 | 福建省玛塔农业发展有限公司 | Soil conditioner and its protectiveness preparation technology |
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2019
- 2019-08-13 CN CN201910744426.0A patent/CN110511098A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103450906A (en) * | 2013-09-23 | 2013-12-18 | 福建省玛塔农业发展有限公司 | Soil conditioner and preparation method thereof |
| CN106867541A (en) * | 2017-02-23 | 2017-06-20 | 福建省玛塔农业发展有限公司 | A kind of environment-friendly type heavy metal renovation agent and its application and slow release heavy metal remediation fertilizer |
| CN106883859A (en) * | 2017-02-23 | 2017-06-23 | 福建省玛塔农业发展有限公司 | Soil conditioner and its protectiveness preparation technology |
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