CN104418672A - Acidic soil conditioner being strong in adsorption and containing silicon, calcium and potassium and preparation method thereof - Google Patents
Acidic soil conditioner being strong in adsorption and containing silicon, calcium and potassium and preparation method thereof Download PDFInfo
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- CN104418672A CN104418672A CN201310365171.XA CN201310365171A CN104418672A CN 104418672 A CN104418672 A CN 104418672A CN 201310365171 A CN201310365171 A CN 201310365171A CN 104418672 A CN104418672 A CN 104418672A
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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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses an acidic soil conditioner being strong in adsorption and containing silicon, calcium and potassium. The acidic soil conditioner is prepared from following raw materials: potassium feldspar, limestone, medical stone and an additive, sodium metasilicate. A preparation method comprises following steps: crushing the potassium feldspar and the limestone respectively through a crushing machine and uniformly mixing the potassium feldspar and the limestone and grinding the potassium feldspar and the limestone through a ball miller; (2) placing the fine mixed material in a disk-type pelletizer, and performing granulation with a sodium metasilicate solution being 30% in concentration as a binding agent; (3) drying wet granules after granulation in a drier for being dried and then sieving the dried granules through a vibrating screen; (4) feeding sieved granules to a calcining kiln to calcine the granules, cooling and jaw-breaking the granules, and mixing the granules with the medical stone in 100 meshes; and (5) grinding the mixture through the ball miller to form a fine powder to obtain the acidic soil conditioner being strong in adsorption and containing silicon, calcium and potassium. In the soil conditioner, a mutual effect among the raw materials is achieved, wherein the alkalinity of the limestone can enable pH value of soil to be adjusted and a requirement of different micro-scale elements during different growth periods of crops can be satisfied by the silicon, the calcium and the potassium. The soil conditioner has a long-period slowly-releasing function.
Description
Technical field
The invention belongs to agricultural fertilizer field, relate to a kind of acidic soil conditioner with strong adsorptivity containing calcium silicon potassium element specifically.
Background technology
Agriculture production uses chemical fertilizer for a long time and pursues Agriculture Production Modes for the purpose of the maximization of unit revenue from domains, and determine China's current soil acidification phenomenon fairly obvious, particularly soil acidification phenomenon in rice producing areas of southern China is more outstanding.For improving soil, rehabilitating soil, 12 countries propose the slogan building beautiful China.In this context, soil conditioner occurs like the mushrooms after rain.Mostly amendment is organic matter is at present main, improves by supplementary organic matter the object that soil micro reaches improvement soil.This amendment shortcoming to supplement the pH value that medium trace element can not change soil, undesirable to the improvement of acid soil.Function singleness, peasant uses inconvenience.
Summary of the invention
Object of the present invention is just to provide a kind of acidic soil conditioner and the preparation method with strong adsorptivity containing calcium silicon potassium element, and this amendment has can adsorb harmful heavy metal in soil, improves contaminated soil environment, promotes effect of crop quality.
Object of the present invention realizes by following technical scheme:
Have an acidic soil conditioner for strong adsorptivity containing calcium silicon potassium element, be made up: potassium felspar sand 155-195 of following raw material, Wingdale 30-50 part, medical stone 155-215 part, auxiliary agent Starso is the 7%-9% of potassium felspar sand and Wingdale gross weight.
The above-mentioned acidic soil conditioner with strong adsorptivity containing calcium silicon potassium element, is made up of following raw material: potassium felspar sand 175,40 parts, Wingdale, medical stone 185 parts, and Starso is 8% of potassium felspar sand and Wingdale total amount.
The above-mentioned preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element, comprises the following steps:
A. take potassium felspar sand, Wingdale, Starso and medical stone by weight, by potassium felspar sand and lime respectively by crusher in crushing to the granularity of 10-20mm, potassium felspar sand and Wingdale mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves;
B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about the 7%-9% of compound, wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 4-6mm with vibratory screening apparatus;
C. particle enters calcining kiln, at 1050 ~ 1100 DEG C of temperature lower calcination 0.8-1.2 hour, then after being cooled to normal temperature, Hubei Province is broken, mix with 100 object medical stones, again with ball mill by levigate for mixed batch mixing to 90% by 300 mesh sieves, the obtained acidic soil conditioner with strong adsorptivity containing calcium silicon potassium element.
The above-mentioned preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element, described step c particle enters calcining kiln, at 1050 ~ 1100 DEG C of temperature lower calcination 0.8-1.2 hour, then after being cooled to normal temperature, Hubei Province is broken, mix with 100 object medical stones, again with ball mill by levigate for mixed batch mixing to 90% by 300 mesh sieves, the obtained acidic soil conditioner with strong adsorptivity containing calcium silicon potassium element.
The above-mentioned preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element, described step b. is by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium silicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about 8% of compound; Step c particle enters calcining kiln, and 1050 ~ 1100 DEG C of temperature lower calcinations 1 hour, after being cooled to normal temperature, Hubei Province was broken.
The present invention is with potassium felspar sand, Wingdale and medical stone for raw material, and medical stone is a kind of to biological nontoxic, harmless and have certain bioactive composite minerals or medicinal rock.The main chemical compositions of medical stone is inorganic silico-aluminate.Comprising SiO2, Al2O3, Fe2O3, FeO, MgO, CaO, K2O, Na2O, TiO2, P2O5, MnO etc., also containing the whole major elements needed for animal, as: the trace element such as K, Na, Ca, Mg, Cu, Mo and rare earth element, about 58 kinds more than.Medical stone also has high absorption Thief zone function.K contained in potassium felspar sand is the important element of crop growth.Silicon, calcium and potassium element its activity in high-temperature burning process is activated, and form citric soluble silicon-calcium-potafertilizer fertilizer, citric soluble silicon-calcium-potafertilizer fertilizer not easily runs off in acid soil.In the present invention, each raw material interacts, the alkalescence of Wingdale not only can regulate the pH value of soil, and the elements such as silico-calcium potassium can also be made to meet Different Crop in the demand of different growth cycles to different medium trace element, reach long-acting slow-release function, the third aspect, medical stone can also adsorb the harmful heavy metal in soil, improves contaminated soil environment, promotes crop quality.And raw material of the present invention is easy to get, preparation technology simple, thus reduces production cost, and this product result of use is good, is applicable to applying.
Embodiment
Embodiment 1: a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element; A. take potassium felspar sand 155-195 part, Wingdale 30-50 part, medical stone 155-215 part, auxiliary agent Starso is the 7%-9% of potassium felspar sand and Wingdale gross weight.By potassium felspar sand and Wingdale respectively by crusher in crushing to the granularity of 10-20mm, mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves; B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is the 7%-9% of compound, wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 4-6mm with vibratory screening apparatus; C. particle enters calcining kiln, at 1050 ~ 1100 DEG C of temperature lower calcination 0.8-1.2 hour, after being then cooled to the broken and 100 object medical stones mixing in Hubei Province after normal temperature, then with ball mill levigate to 90% by 300 mesh sieves, pack and be finished product.
Embodiment 2: a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element; A. take potassium felspar sand 155kg, Wingdale 30kg, medical stone 155kg, auxiliary agent Starso is 7% of potassium felspar sand and Wingdale gross weight.By potassium felspar sand and Wingdale respectively by crusher in crushing to the granularity of 10-20mm, mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves; B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, the wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 4-6mm with vibratory screening apparatus; C. particle enters calcining kiln, 1050 ~ 1100 DEG C of temperature lower calcinations 0.8 hour, after being then cooled to the broken and 100 object medical stones mixing in Hubei Province after normal temperature, then with ball mill levigate to 90% by 300 mesh sieves, pack and be finished product.
Embodiment 3: a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element; A. take potassium felspar sand 165kg, Wingdale 35kg, medical stone 160kg, auxiliary agent Starso is 7.5% of potassium felspar sand and Wingdale gross weight.By potassium felspar sand and Wingdale respectively by crusher in crushing to the granularity of 10-20mm, mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves; B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about 7.5% of compound, wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 3-5mm with vibratory screening apparatus; C. particle enters calcining kiln, 1050 ~ 1100 DEG C of temperature lower calcinations 0.9 hour, after being then cooled to the broken and 100 object medical stones mixing in Hubei Province after normal temperature, then with ball mill levigate to 90% by 300 mesh sieves, pack and be finished product.
Embodiment 4: a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element; A. take potassium felspar sand 175kg, Wingdale 40kg, medical stone 185kg, auxiliary agent Starso is 8% of potassium felspar sand and Wingdale total amount.By potassium felspar sand and Wingdale respectively by crusher in crushing to the granularity of 10-20mm, mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves; B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about 8% of compound, wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 4-6mm with vibratory screening apparatus; C. particle enters calcining kiln, 1050 ~ 1100 DEG C of temperature lower calcinations 1 hour, after being then cooled to the broken and 100 object medical stones mixing in Hubei Province after normal temperature, then with ball mill levigate to 90% by 300 mesh sieves, pack and be finished product.
Embodiment 5: a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element; A. take potassium felspar sand 185kg, Wingdale 45kg, medical stone 195kg, auxiliary agent Starso is 8.5% of potassium felspar sand and Wingdale total amount.By potassium felspar sand and Wingdale respectively by crusher in crushing to the granularity of 10-20mm, mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves; B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about 8.5% of compound, wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 4-6mm with vibratory screening apparatus; C. particle enters calcining kiln, 1050 ~ 1100 DEG C of temperature lower calcinations 1.1 hours, after being then cooled to the broken and 100 object medical stones mixing in Hubei Province after normal temperature, then with ball mill levigate to 90% by 300 mesh sieves, pack and be finished product.
Embodiment 6: a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element; A. take potassium felspar sand 195kg, Wingdale 50kg, medical stone 215kg, auxiliary agent Starso is 9% of potassium felspar sand and Wingdale total amount.By potassium felspar sand and Wingdale respectively by crusher in crushing to the granularity of 10-20mm, mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves; B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about 9% of compound, wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 3-5mm with vibratory screening apparatus; C. particle enters calcining kiln, 1050 ~ 1100 DEG C of temperature lower calcinations 1.2 hours, after being then cooled to the broken and 100 object medical stones mixing in Hubei Province after normal temperature, then with ball mill levigate to 90% by 300 mesh sieves, pack and be finished product.
Embodiment 7: a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element; A. take potassium felspar sand 191kg, Wingdale 48kg, medical stone 205kg, auxiliary agent Starso is 9% of potassium felspar sand and Wingdale total amount.By potassium felspar sand and Wingdale respectively by crusher in crushing to the granularity of 10-20mm, mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves; B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about 9% of compound, wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 3-5mm with vibratory screening apparatus; C. particle enters calcining kiln, 1050 ~ 1100 DEG C of temperature lower calcinations 1.2 hours, after being then cooled to the broken and 100 object medical stones mixing in Hubei Province after normal temperature, then with ball mill levigate to 90% by 300 mesh sieves, pack and be finished product.
Above embodiment, can also by step c to the 300 mesh sieve mixed powders Starso that adds 5% of compound weight make binding agent and carry out granulation, obtain granular product.
Here is experiment effect of the present invention:
One, be absorbed with harmful heavy metals experiment: use field of the present invention, use 40kg be as the criterion with every mu, crop significantly reduces containing heavy metal amount, is embodied in, in paddy rice, heavy metal content lowers 96% than not using the present invention, wheat 94%, corn 95%, peanut 95%, apple 96%, sugarcane 95%.
Two, improve the experiment of acid soil physicochemical property: use field of the present invention, use 40kg for every mu, soil pH value is 6.6-7.2, every mu when using 30kg, soil pH value is 6.2-6.70, every mu when using 50kg, and soil pH value is 7.1-7.5.
Three, concrete crop applying effect is as follows:
Every mu, paddy rice is measured routinely and uses on the fertile basis of N, P, K, and enrich 35kg silico-calcium potassium of the present invention amendment, show cane sturdy, fringe is large, mu volume increase more than 12.55%.Every mu, paddy rice is measured routinely and uses on the fertile basis of N, P, K, and enrich 50kg silico-calcium potassium of the present invention amendment, show cane sturdy, fringe is large, mu volume increase more than 20.29%.Every mu, paddy rice is measured routinely and uses on the fertile basis of N, P, K, and enrich 65kg silico-calcium potassium of the present invention amendment, show cane sturdy, fringe is large, mu volume increase more than 16.58%.
Per mu is measured routinely and is used on the fertile basis of N, P, K, and enrich 45kg siliceous fertilizer of the present invention, show resistant to lodging, disease occurs few, mu volume increase 10%-14%.Corn every mu is measured routinely and is used on the fertile basis of N, P, K, enriches 45kg siliceous fertilizer of the present invention, shows well developed root system, resistant to lodging, without bald sharp phenomenon, mealie is full, mu volume increase 12%-16%, peanut every mu is measured routinely and is used on the fertile basis of N, P, K, enriches 35kg siliceous fertilizer of the present invention, shows well developed root system, resistant to lodging, without bald sharp phenomenon, mealie is full, mu volume increase 14%-20%.Apple tree, the age of tree 3 years, every tree is affixed by 2kg silico-calcium potassium of the present invention amendment on other fertilizer basis just conventional, shows fruit rate high, the large bright of fruit, every volume increase more than 15%.Sugarcane, every mu of sugarcane is measured routinely and uses on the fertile basis of N, P, K, and enrich 20kg silico-calcium potassium of the present invention, show well developed root system, stem height is sturdy, mu volume increase more than 20%.
Above experimental result shows, the present invention have three kinds of effects 1. utilize medical stone high absorbability absorption soil in harmful heavy metal, improve contaminated soil environment, promote crop quality.2. utilize the feature of pH value 9--11, the physicochemical property that can improve acid soil reaches the object of improvement acid soil.3. utilize by elements such as the silico-calcium potassium that activates, meet Different Crop in the demand of different growth cycles to different medium trace element, play the effect of slow release long-acting functional fertilizer.
Claims (5)
1. one kind has the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element, it is characterized in that: be made up of following raw material: potassium felspar sand 155-195, Wingdale 30-50 part, medical stone 155-215 part, auxiliary agent Starso is the 7%-9% of potassium felspar sand and Wingdale gross weight.
2. a kind of acidic soil conditioner with strong adsorptivity containing calcium silicon potassium element according to claim 1, it is characterized in that: be made up of following raw material: potassium felspar sand 175,40 parts, Wingdale, medical stone 185 parts, Starso is 8% of potassium felspar sand and Wingdale total amount.
3. a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element according to claim 1 and 2, comprises the following steps:
A. take potassium felspar sand, Wingdale, Starso and medical stone by weight, by potassium felspar sand and lime respectively by crusher in crushing to the granularity of 10-20mm, potassium felspar sand and Wingdale mix, with grinding of ball grinder to 90% material by 100 mesh standard sieves;
B. by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium metasilicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about the 7%-9% of compound, wet granular after granulation enters drying machine and carries out drying, then chooses the particle of granularity 4-6mm with vibratory screening apparatus;
C. particle enters calcining kiln, at 1050 ~ 1100 DEG C of temperature lower calcination 0.8-1.2 hour, then after being cooled to normal temperature, Hubei Province is broken, mix with 100 object medical stones, again with ball mill by levigate for mixed batch mixing to 90% by 300 mesh sieves, the obtained acidic soil conditioner with strong adsorptivity containing calcium silicon potassium element.
4. the preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element according to claim 3, it is characterized in that: described step c particle enters calcining kiln, at 1050 ~ 1100 DEG C of temperature lower calcination 0.8-1.2 hour, then after being cooled to normal temperature, Hubei Province is broken, mix with 100 object medical stones, again with ball mill by levigate for mixed batch mixing to 90% by 300 mesh sieves, the obtained acidic soil conditioner with strong adsorptivity containing calcium silicon potassium element.
5. a kind of preparation method with the acidic soil conditioner of strong adsorptivity containing calcium silicon potassium element according to claim 3 or 4, it is characterized in that: described step b. is by levigate above-mentioned compound, be placed in pan-type pelletizer, with the sodium silicate solution of 30% concentration for binding agent carries out granulation, consumption of binder is about 8% of compound; Step c particle enters calcining kiln, 1050 ~ 1100 DEG C of temperature lower calcinations 1 hour, is ground to 90% by 300 orders after being cooled to normal temperature after the broken and 100 object medical stones mixing in Hubei Province.
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105255498A (en) * | 2015-09-29 | 2016-01-20 | 湖南工业大学 | Preparation of compound soil conditioner capable of reducing cadmium accumulation of paddy rice |
CN106748513A (en) * | 2016-12-30 | 2017-05-31 | 孙祎 | A kind of preparation method of southern hillside fields acid soil improving agent |
CN107033921A (en) * | 2017-06-09 | 2017-08-11 | 贵州诺威施生物工程有限公司 | Microbe soil improves microbial inoculum and preparation method |
CN107245001A (en) * | 2017-05-26 | 2017-10-13 | 河南省科学院地理研究所 | A kind of functional slow-release fertilizer and its production method |
CN107955614A (en) * | 2017-11-29 | 2018-04-24 | 南昌大学 | A kind of Southern Red Soil modifying agent and its application method based on mining area tailings |
CN108383651A (en) * | 2018-03-07 | 2018-08-10 | 青海国泰盐湖资源股份有限公司 | A kind of soil conditioner |
CN112592721A (en) * | 2020-12-16 | 2021-04-02 | 华南理工大学 | Natural soil heavy metal restoration modifier, preparation method thereof and preparation equipment thereof |
CN113150787A (en) * | 2021-03-24 | 2021-07-23 | 河南农业大学 | Silicon-calcium-magnesium fertilizer soil conditioner and preparation method and application thereof |
CN114916278A (en) * | 2022-04-11 | 2022-08-19 | 海南省农业科学院农业环境与土壤研究所 | Soil improvement method for vegetable planting |
CN115677426A (en) * | 2022-11-18 | 2023-02-03 | 方城县华裕肥料有限公司 | Special fertilizer for improving quality and increasing yield of wheat |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN105255498A (en) * | 2015-09-29 | 2016-01-20 | 湖南工业大学 | Preparation of compound soil conditioner capable of reducing cadmium accumulation of paddy rice |
CN106748513A (en) * | 2016-12-30 | 2017-05-31 | 孙祎 | A kind of preparation method of southern hillside fields acid soil improving agent |
CN107245001A (en) * | 2017-05-26 | 2017-10-13 | 河南省科学院地理研究所 | A kind of functional slow-release fertilizer and its production method |
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CN107955614A (en) * | 2017-11-29 | 2018-04-24 | 南昌大学 | A kind of Southern Red Soil modifying agent and its application method based on mining area tailings |
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CN112592721A (en) * | 2020-12-16 | 2021-04-02 | 华南理工大学 | Natural soil heavy metal restoration modifier, preparation method thereof and preparation equipment thereof |
CN113150787A (en) * | 2021-03-24 | 2021-07-23 | 河南农业大学 | Silicon-calcium-magnesium fertilizer soil conditioner and preparation method and application thereof |
CN114916278A (en) * | 2022-04-11 | 2022-08-19 | 海南省农业科学院农业环境与土壤研究所 | Soil improvement method for vegetable planting |
CN115677426A (en) * | 2022-11-18 | 2023-02-03 | 方城县华裕肥料有限公司 | Special fertilizer for improving quality and increasing yield of wheat |
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