CN105669324A - Biochar fertilizer and preparation method and application thereof - Google Patents
Biochar fertilizer and preparation method and application thereof Download PDFInfo
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- CN105669324A CN105669324A CN201610004813.7A CN201610004813A CN105669324A CN 105669324 A CN105669324 A CN 105669324A CN 201610004813 A CN201610004813 A CN 201610004813A CN 105669324 A CN105669324 A CN 105669324A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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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
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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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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
Abstract
The invention discloses a biochar fertilizer and a preparation method and an application thereof. Biochar is prepared by carbonization processing of forestry waste, the biochar and calcium oxide are mixed according to a certain proportion, and then according to different heavy metal pollution degrees of soil, the application amount of the biochar is designed; at the same time, according to the amount of nitrogen, phosphorus and potassium fertilizers required for planting different vegetable crops, the biochar is mixed with the nitrogen, phosphorus and potassium fertilizers to prepare the biochar fertilizer adapting to different soils and different vegetables. The biochar fertilizer not only solves the problem of turning the forestry waste into treasure, but also solves the problem of inhibiting agricultural crops from absorbing heavy metals in agricultural production, and has important practical application value. The method provided by the invention is simple and easy to operate, and can be widely used for vegetable agricultural production of the heavy metal polluted soil.
Description
Technical field
The invention belongs to fertilizer field, it is specifically related to a kind of charcoal fertilizer and its preparation method and application.
Background technology
Resources and environment problem is the great problem that contemporary mankind faces. And in agriculture, production of forestry, produce enormous amount, solid waste of a great variety. Current agriculture, forestry waste mainly adopt the processing mode such as stacking on the spot, landfill burning, not only occupy valuable land resources, and bring the wasting of resources, environmental pollution problem. The secondary pollution that agriculture, woods waste combustion cause has become an important factor in order of restriction Chinese national economy and environmental pollution improvement. Utilize agricultural, forestry waste to produce charcoal, reduce the environmental pollution caused, increase soil fertility simultaneously and caused the common concern of people.
Soil pollution has become the great problem faced in China's agriculture production and environmental improvement, and the soil that the current whole nation has 16.7% exists point-source pollution, and particularly heavy metal pollution of soil, it is higher that agricultural product security exists degree of risk. In order to reduce farm crop to the absorption of effect of fertilizer, forefathers have carried out a large amount of technical researches in utilisation technology, and these technology can be concluded as following Four types: one, cultivate crop new variety by conventional breeding or transgenic breeding approach or plant the absorption that matter suppresses heavy metal element. At present, conventional breeding (comprise screening and combine with chemistry or radioinduction with domestication combination, hybridization) obtains the low absorption new variety of heavy metal. Two, crop is suppressed to absorb heavy metal by leaf dressing etc. Such as, a kind of rare earth compound silicon sol suppressing paddy rice to absorb heavy metal has been invented in Guangdong Province's ecotope and soil research, by silicon dioxide gel and molybdenum element compound so that it is has and suppresses vegetable nitrate absorption and accumulation function; And by further with rare earth element compound, it is to increase suppress the ability of vegetables Metal uptake; Pass through foliage-spray, it is to increase the resistance to heavy metal ability (Chinese Patent Application No.: 99112463.4) of comprehensive plant. The harm of heavy metal-polluted soil three, is alleviated by improvement soil or repair process. Such as, Yang Shengxiang etc. have developed the modification method of a kind of heavy-metal contaminated soil, by response inhabitation matrix oxidations such as absorption, chelating, complexings, fixing heavy metal ion also reduces its biology toxicity, reduces the diffusion of heavy metal ion to surrounding soil or water body and the seepage (patent No.: 200910194051.1).Zhou Cong and Zhao Min etc. have developed a kind of soil improvement nutrient solution reducing heavy metal cadmium content of vegetables, be by humate, urea, potassium primary phosphate, highly basic and water after dissolving, filtering formulated, described humate is the one in Sodium salts humic acids or potassium humate or mixing. Described highly basic is the one in sodium hydroxide or potassium hydroxide or mixing. While effectively regulation and control soil pH value, the nutrient needed for plant growth is provided again, before crop-planting or in process of crop growth, at any time soil can be watered, there is the feature (patent No.s: 201010170926) such as easy to use, safe. Four, improve crop by soil conditioner and arable farming measure and suppress Metal uptake ability. A lot of research shows, be coupled with agronomic measures by soil conditioner, to improve crop suppression Metal uptake be current approach the most feasible.
China be timber the like waste produce big country, from now on quite over a long time in can not change, particularly China's forestry waste utilization ratio is low. Along with deepening continuously of charcoal research, its using value is constantly found, breaks traditions and only pays close attention to the idea of bio oil, combustion gas utility value, for forestry waste comprehensive utilization provides new outlet, drives the development of forestry waste recycling. Over more than 30 year, to character, composition and the effect of improving the soil of charcoal, the research such as increasing yield is relatively abundant, but to be utilized by charcoal in agriculture production be directly be manured into soil mostly. Compared with directly using with traditional biological charcoal, charcoal preparation is utilized to be used as the new-type fertilizer such as soil improvement agent (renovation agent) and compound fertilizer, in regulation and control agricultural land soil physico-chemical property, there is greater advantage, particularly passivation heavy metal-polluted soil and reduce its absorption aspect. Therefore, being necessary to utilize forestry waste development new bio charcoal fertilizer and operation technique thereof to carry out innovation in passivation heavy metal-polluted soil, contaminated soil remediation and reduction vegetable crop absorption, research and development initiative adapts to charcoal fertilizer and the correlation technique of the different vegetable kind of the different soil of heavy metal pollution degree.
Summary of the invention
It is an object of the invention to affect the problem of vegetable products safety for current heavy metal pollution of soil, it is provided that a kind of charcoal fertilizer and its preparation method and application.
First object of the present invention is to provide a kind of charcoal fertilizer.
The charcoal fertilizer of the present invention is charcoal and the calcium oxide of 25～40:1 containing mass ratio.
Preferably, described charcoal fertilizer is also containing urea (containing N46%), diammonium phosphate (P2O5Content is 44%) and potassium sulfate (K2O content 50%), charcoal and urea (containing N46%), diammonium phosphate (P2O5Content is 44%) and potassium sulfate (K2O content 50%) mass ratio be 4～6:1:1:1.
Preferably, described charcoal be by production of forestry, wood working after waste through charing processing be prepared from, particle diameter is 0.01-1.50mm, and density is 0.90-1.05g/cm3, maximum water regain is 450g/Kg, has superfine honeycomb hollow body.
2nd object of the present invention is to provide the preparation method of a kind of charcoal fertilizer.
A preparation method for charcoal fertilizer, comprises the following steps:
Taking each component raw material of charcoal fertilizer, the mass ratio making charcoal and calcium oxide is 25～40:1, charcoal and urea (containing N46%), diammonium phosphate (P2O5Content is 44%), potassium sulfate (K2O content 50%) mass ratio be 4～6:1:1:1;After taking, first charcoal is mixed with calcium oxide, then add urea (containing N46%), diammonium phosphate (P2O5Content is 44%) and potassium sulfate (K2O content 50%) mix, thus prepare charcoal fertilizer.
3rd object of the present invention is to provide charcoal fertilizer in the application reduced in vegetables absorption heavy metal.
Preferably, when soil attaches most importance to metal slight pollution, in the charcoal fertilizer used, the amount of application of charcoal is 2250～3750kg/ha.
Preferably, when soil is heavy metal intermediate pollution, in the charcoal fertilizer used, the amount of application of charcoal is 3750-6000kg/ha.
Preferably, charcoal fertilizer uses as base manure.
Described vegetables are leaf vegetables, rhizome vegetable and/or melon-fruit-like vegetable.
The above-mentioned charcoal fertilizer material formula used, is described charcoal amount of application, namely uses different amount according to different vegetable, and the charcoal amount that leaf vegetables is used to be 80-100%, rhizome vegetable be 60-80%, melon-fruit-like vegetable are 50-80%.
In above-mentioned application process, it is to mix described charcoal with the azophoska needed for different vegetable crop, preparation charcoal fertilizer.
In above-mentioned application process, it is preparation charcoal fertilizer is used as base manure, spreads fertilizer over the fields in heavy-metal contaminated soil and plough deeply.
In above-mentioned application process, described in the degree of depth ploughed deeply can be 15-30cm, specifically can be 15cm, 25cm or 30cm.
The present invention prepares charcoal by being undertaken forestry waste carbonizing the recycling of processing, after being mixed according to a certain percentage with calcium oxide by charcoal, then is subject to the difference of heavy metal pollution degree according to soil, the amount of application of design charcoal; Simultaneously azophoska amount needed for different vegetable proportion of crop planting, mix charcoal with azophoska, prepares the fertilizer formula and operation technique that are adapted to difference soil different vegetable.
Forestry waste recycling process provided by the invention has reformed charcoal at utilization ways agriculturally, charcoal can effectively reduce the absorption of vegetable crop heavy metal as a kind of forestry waste, passivation heavy metal-polluted soil, not only solve forestry waste to turn waste into wealth, and solve the problem suppressing vegetable crop to absorb heavy metal in agriculture production, there is important actual application value. Method provided by the invention is easy and simple to handle, easy, can extensively for the vegetables agriculture production of heavy-metal contaminated soil.
Embodiment
Following examples are the further explanations to the present invention, instead of limitation of the present invention.
The experimental technique used in following embodiment if no special instructions, is ordinary method.
Material used in following embodiment, reagent etc., if no special instructions, all can obtain from commercial channels.
The charcoal used in following examples be by production of forestry, wood working after waste through charing processing be prepared from. Described charcoal is characterized as: particle diameter is 0.01-1.50mm, density 0.90-1.05g/cm3, maximum water regain is 450g/Kg, has superfine honeycomb hollow body.
Embodiment 1: use the impact that leaf vegetables is suppressed Metal uptake by charcoal fertilizer
Soil used is attached most importance to the slight contaminated soil of metal, measures 0-30cm heavy metal-polluted soil, and its contents of heavy metal elements is: Pb189.53mg/Kg, Cd0.42mg/Kg, As14.6mg/kg and Hg0.044mg/Kg.
Trial crops is leaf vegetables (Plantula Brassicae chinensis).
Charcoal for prepared by examination forestry waste: charcoal particle diameter 0.50-0.01mm, density 1.05g/cm3, maximum water regain is 298g/Kg, has superfine honeycomb hollow body.
First taking each component for the preparation of charcoal fertilizer, the mass ratio making charcoal and calcium oxide is 25:1, charcoal and urea (containing N46%), diammonium phosphate (P2O5Content is 44%), potassium sulfate (K2O content 50%) mass ratio be 4:1:1:1; First the above-mentioned charcoal taken is mixed with calcium oxide, then add urea, diammonium phosphate and potassium sulfate and mix, thus prepare charcoal fertilizer.
According to the amount of application of 4027.5kg/ha (charcoal amount of application 2250kg/ha wherein), charcoal fertilizer being applied this soil and is used as base manure, method of application is disposable being evenly sprinkling upon on ground, then ploughs deeply the soil layer to 15cm; Not use charcoal fertilizer (namely using the fertilizer that equivalent is mixed to get as the urea of 1:1:1, diammonium phosphate and potassium sulfate by mass ratio) for comparison (CK). Result shows: uses charcoal fertilizer and significantly reduces Cd, Pb, As, Hg Metal uptake amount (table 1) than Plantula Brassicae chinensis (leaf vegetables) when not using charcoal fertilizer.
The impact that Plantula Brassicae chinensis (leaf vegetables) is suppressed Metal uptake by charcoal fertilizer used by table 1
A: draw from People's Republic of China's standard GB/T 2752, BG4810, BG14961, BG15201
Embodiment 2: use the impact that rhizome vegetable is suppressed Metal uptake by charcoal fertilizer
Soil used is respectively the soil of heavy metal intermediate pollution, measures 0-30cm heavy metal-polluted soil, and its contents of heavy metal elements is: Pb199.4mg/Kg, Cd0.58mg/Kg, As21.00mg/kg and Hg0.087mg/Kg.
Trial crops is rhizome vegetable (Radix Dauci Sativae).
Charcoal for prepared by examination forestry waste: charcoal particle diameter 1.20-0.01, density 1.00g/cm3, maximum water regain, for being 450g/Kg, has superfine honeycomb hollow body.
First taking each component for the preparation of charcoal fertilizer, the mass ratio making charcoal and calcium oxide is 40:1, charcoal and urea (containing N46%), diammonium phosphate (P2O5Content is 44%), potassium sulfate (K2O content 50%) mass ratio be 6:1:1:1; First the above-mentioned charcoal taken is mixed with calcium oxide, then add urea, diammonium phosphate and potassium sulfate and mix, thus prepare charcoal fertilizer.
According to the amount of application of 5718.75kg/ha (charcoal amount of application 3750kg/ha wherein), charcoal fertilizer being applied this soil and is used as base manure, method of application is disposable being evenly sprinkling upon on ground, then ploughs deeply the soil layer to 30cm; Not use charcoal fertilizer (namely using the fertilizer that equivalent is mixed to get as the urea of 1:1:1, diammonium phosphate and potassium sulfate by mass ratio) for comparison (CK). Result shows: uses charcoal fertilizer and significantly reduces Cd, Pb, As, Hg Metal uptake amount (table 2) than Radix Dauci Sativae (rhizome vegetable) when not using charcoal fertilizer.
The impact that Radix Dauci Sativae (rhizome vegetable) is absorbed heavy metal by charcoal fertilizer used by table 2
A: draw from People's Republic of China's standard GB/T 2752, BG4810, BG14961, BG15201
Embodiment 3: use the impact that melon-fruit-like vegetable is suppressed Metal uptake by charcoal fertilizer
Soil used is the soil of heavy metal intermediate pollution, and 0-30cm heavy metal content in soil is after measured: Cd0.57mg/Kg, Pb282.1mg/Kg.
Trial crops is melon-fruit-like vegetable (balsam pear).
Charcoal for prepared by examination forestry waste: particle diameter 1.50-0.01mm, density 0.90g/cm3, maximum water regain is 389g/Kg, has superfine honeycomb hollow body.
1, charcoal amount of application 3750kg/ha
First taking each component for the preparation of charcoal fertilizer, the mass ratio making charcoal and calcium oxide is 30:1, charcoal and urea (containing N46%), diammonium phosphate (P2O5Content is 44%), potassium sulfate (K2O content 50%) mass ratio be 4:1:1:1; First the above-mentioned charcoal taken is mixed with calcium oxide, then add urea, diammonium phosphate and potassium sulfate and mix, thus prepare charcoal fertilizer.
According to the amount of application of 6687.5kg/ha (charcoal amount of application 3750kg/ha wherein), charcoal fertilizer being applied this soil and is used as base manure, method of application is disposable being evenly sprinkling upon on ground, then ploughs deeply the soil layer to 30cm; Not use charcoal fertilizer (namely using the fertilizer that equivalent is mixed to get as the urea of 1:1:1, diammonium phosphate and potassium sulfate by mass ratio) for comparison. Result of study shows: uses charcoal fertilizer and significantly reduces Cd, Pb Metal uptake amount than balsam pear (melon-fruit-like vegetable) when not using charcoal fertilizer, does not all exceed limit standard.
2, charcoal amount of application 4500kg/ha
First taking each component for the preparation of charcoal fertilizer, the mass ratio making charcoal and calcium oxide is 30:1, charcoal and urea (containing N46%), diammonium phosphate (P2O5Content is 44%), potassium sulfate (K2O content 50%) mass ratio be 5:1:1:1; First the above-mentioned charcoal taken is mixed with calcium oxide, then add urea, diammonium phosphate and potassium sulfate and mix, thus prepare charcoal fertilizer. According to the above-mentioned application process of the present embodiment, charcoal fertilizer is applied this soil according to the amount of application of 7350kg/ha (charcoal amount of application 4500kg/ha wherein), compared with the control, the balsam pear using charcoal fertilizer significantly reduces Cd, Pb Metal uptake amount (table 3).
3, charcoal amount of application 6000kg/ha
First taking each component for the preparation of charcoal fertilizer, the mass ratio making charcoal and calcium oxide is 30:1, charcoal and urea (containing N46%), diammonium phosphate (P2O5Content is 44%), potassium sulfate (K2O content 50%) mass ratio be 6:1:1:1; First the above-mentioned charcoal taken is mixed with calcium oxide, then add urea, diammonium phosphate and potassium sulfate and mix, thus prepare charcoal fertilizer. According to the above-mentioned application process of the present embodiment, charcoal fertilizer is applied this soil according to the amount of application of 9200kg/ha (charcoal amount of application 6000kg/ha wherein), compared with the control, the balsam pear using charcoal fertilizer significantly reduces Cd, Pb Metal uptake amount (table 3). Result shows, balsam pear is absorbed Cd, Pb impact relatively greatly by the charcoal fertilizer using different amount, and charcoal amount of application is more many, to the effect more obvious (table 3) suppressing Cd, Pb to absorb.
The impact that balsam pear (melon-fruit-like vegetable) is suppressed Metal uptake by charcoal fertilizer used by table 3
Claims (10)
1. a charcoal fertilizer, it is characterised in that, it is charcoal and the calcium oxide of 25～40:1 containing mass ratio.
2. charcoal fertilizer according to claim 1, it is characterised in that, described charcoal is prepared from through charing processing by the waste after production of forestry, wood working, and particle diameter is 0.01-1.50mm, and density is 0.90-1.05g/cm3, maximum water regain is 450g/Kg, has superfine honeycomb hollow body.
3. charcoal fertilizer according to claim 1 and 2, it is characterised in that, also containing urea, diammonium phosphate and potassium sulfate, the mass ratio of charcoal and urea, diammonium phosphate and potassium sulfate is 4～6:1:1:1.
4. the preparation method of a charcoal fertilizer, it is characterised in that, comprise the following steps:
Taking each component raw material of charcoal fertilizer, the mass ratio making charcoal and calcium oxide is 25～40:1, and the mass ratio of charcoal and urea, diammonium phosphate, potassium sulfate is 4～6:1:1:1; After taking, first charcoal is mixed with calcium oxide, then add urea, diammonium phosphate and potassium sulfate and mix, thus prepare charcoal fertilizer.
5. the preparation method of charcoal fertilizer according to claim 4, it is characterised in that, described charcoal is prepared from through charing processing by the waste after production of forestry, wood working, and particle diameter is 0.01-1.50mm, and density is 0.90-1.05g/cm3, maximum water regain is 450g/Kg, has superfine honeycomb hollow body.
6. charcoal fertilizer described in claim 1 or 2 absorbs the application in heavy metal reducing vegetables.
7. application according to claim 6, it is characterised in that, when soil attaches most importance to metal slight pollution, in the charcoal fertilizer used, the amount of application of charcoal is 2250～3750kg/ha.
8. application according to claim 6, it is characterised in that, when soil is heavy metal intermediate pollution, in the charcoal fertilizer used, the amount of application of charcoal is 3750-6000kg/ha.
9. application according to claim 6, it is characterised in that, described charcoal fertilizer uses as base manure.
10. application according to claim 6, it is characterised in that, described vegetables are leaf vegetables, rhizome vegetable and/or melon-fruit-like vegetable.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187445A (en) * | 2016-06-29 | 2016-12-07 | 万里神农有限公司 | A kind of rhizome vegetable special organic slow-release fertilizer and application thereof |
| CN106187579A (en) * | 2016-06-30 | 2016-12-07 | 广东省农业科学院农业资源与环境研究所 | A kind of charcoal soil conditioner improving quality of vegetable |
| CN106242911A (en) * | 2016-08-19 | 2016-12-21 | 刘建伟 | A kind of charcoal fertilizer containing biogas slurry |
| CN107162787A (en) * | 2017-06-29 | 2017-09-15 | 太仓东浔生物科技有限公司 | A kind of high fertilizer efficiency charcoal fertilizer of high adsorption |
| CN107200640A (en) * | 2017-06-29 | 2017-09-26 | 太仓东浔生物科技有限公司 | A kind of preparation method of the high fertilizer efficiency charcoal fertilizer of high adsorption |
| CN107200639A (en) * | 2017-06-29 | 2017-09-26 | 太仓东浔生物科技有限公司 | A kind of preparation method of the high fertilizer efficiency modification biological charcoal fertilizer of high adsorption |
| CN107235759A (en) * | 2017-06-05 | 2017-10-10 | 上海大学 | Charcoal phosphorus composite fertilizer and the method that charcoal phosphorus composite fertilizer is prepared using sludge |
| CN110028366A (en) * | 2019-04-30 | 2019-07-19 | 江西农业大学 | It is a kind of to control the rice Fertilizer Combination and method of administration for absorbing Cu Pollution in Soil with resistance |
| CN110699084A (en) * | 2019-10-09 | 2020-01-17 | 东南大学 | Soil heavy metal pollution curing and repairing composite reagent and curing and repairing method |
| CN112536315A (en) * | 2020-11-06 | 2021-03-23 | 天津亚德尔生物质科技股份有限公司 | Soil treatment method based on charcoal material |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106187445A (en) * | 2016-06-29 | 2016-12-07 | 万里神农有限公司 | A kind of rhizome vegetable special organic slow-release fertilizer and application thereof |
| CN106187445B (en) * | 2016-06-29 | 2018-08-28 | 万里神农有限公司 | A kind of special organic slow-release fertilizer of rhizome vegetable and its application |
| CN106187579A (en) * | 2016-06-30 | 2016-12-07 | 广东省农业科学院农业资源与环境研究所 | A kind of charcoal soil conditioner improving quality of vegetable |
| CN106242911A (en) * | 2016-08-19 | 2016-12-21 | 刘建伟 | A kind of charcoal fertilizer containing biogas slurry |
| CN107235759A (en) * | 2017-06-05 | 2017-10-10 | 上海大学 | Charcoal phosphorus composite fertilizer and the method that charcoal phosphorus composite fertilizer is prepared using sludge |
| CN107162787A (en) * | 2017-06-29 | 2017-09-15 | 太仓东浔生物科技有限公司 | A kind of high fertilizer efficiency charcoal fertilizer of high adsorption |
| CN107200639A (en) * | 2017-06-29 | 2017-09-26 | 太仓东浔生物科技有限公司 | A kind of preparation method of the high fertilizer efficiency modification biological charcoal fertilizer of high adsorption |
| CN107200640A (en) * | 2017-06-29 | 2017-09-26 | 太仓东浔生物科技有限公司 | A kind of preparation method of the high fertilizer efficiency charcoal fertilizer of high adsorption |
| CN110028366A (en) * | 2019-04-30 | 2019-07-19 | 江西农业大学 | It is a kind of to control the rice Fertilizer Combination and method of administration for absorbing Cu Pollution in Soil with resistance |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
| US11691929B2 (en) | 2019-07-04 | 2023-07-04 | Incitec Fertilizers Pty Limited | Fertiliser |
| CN110699084A (en) * | 2019-10-09 | 2020-01-17 | 东南大学 | Soil heavy metal pollution curing and repairing composite reagent and curing and repairing method |
| CN110699084B (en) * | 2019-10-09 | 2021-06-11 | 东南大学 | Soil heavy metal pollution curing and repairing composite reagent and curing and repairing method |
| CN112536315A (en) * | 2020-11-06 | 2021-03-23 | 天津亚德尔生物质科技股份有限公司 | Soil treatment method based on charcoal material |
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Address after: 266603 Laixi Province, Qingdao City, Jiang Shan town, West Ring Road East Applicant after: QINGDAO HONGRUN FOREST BIOMASS ENERGY CO., LTD. Applicant after: Qingdao Agricultural University Address before: 266106 Shandong City, Chengyang Province, the streets of the town of the town of east Ge Ge home community Applicant before: QINGDAO HONGRUN FOREST BIOMASS ENERGY CO., LTD. Applicant before: Qingdao Agricultural University |
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Application publication date: 20160615 |