CN102702444B - Sustained release trace element fertilizer - Google Patents
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Abstract
The invention relates to a sustained release trace element fertilizer. A preparation method comprises the following steps of: placing 50 to 80 weight parts of acrylic acid in a container, and adding 350 weight parts of deionized water and uniformly stirring, adjusting the pH value by using potassium hydroxide to about 7.0; weighing 30 to 50 weight parts of natural dried sheep manure, and crushing the natural dried sheep manure into 100-mesh powder; adding the obtained sheep manure powder into a solution, adding 60 to 90 weight parts of urea and 10 to 15 weight parts of diammonium hydrogen phosphate, stirring and dissolving, introducing nitrogen, and stirring at high speed for 30 minutes; heating under pressure of 0.03 to 0.05Mpa to 65 DEG C and pasting for 20 minutes; and adding 1.0 weight part of potassium persulfate salt and 1.0 weight part of sodium sulfite, uniformly stirring, adding 0.5 weight part of N,N'-methylenebisacrylamide, and polymerizing at the temperature of between 50 and 60 DEG C for 1 hour to obtain a crosslinking and polymerization product, and supplementing nutritional components such as various trace elements to obtain the final product. The obtained sustained release trace element fertilizer has the advantages of high water retention capacity, good biological and chemical stability, more full-scale function for adjusting crop growth and development, and better effect, at the meanwhile the effective nutritional components of sheep manure are preserved, the effective utilization range of the resources is widened, and the cost can be greatly reduced.
Description
Technical field
The invention belongs to super absorbent resin field, be specifically related to slow release type trace element fertilizer.
Background technology
Trace element zinc, boron, copper, manganese, molybdenum, iron etc. enter agricultural production system as plant nutrition essential element with the form of fertilizer, start from 20～thirties of 20th century, with regard to world wide, from 60～seventies of 20th century, being applied to big area produces, be an emerging field, develop very fast.Over nearly 20 years, use area also in continuous expansion.China's impact of trace element on growth and development of plants that begin one's study from the forties in 20th century.Microelement contents of soil and form thereof begin one's study the 1950's.The application aborning of micro-fertilizer, in succession discovery begin one's study the sixties in 20th century: soybean is used molydbenum fertilizer increase yield significantly; Soil lacking boron, rape flower and unreal, the cotton base of a fruit and not spending; Soil zinc deficiency, rice anisopliae is sat the root and stem of certain plants, the grey seedling of corn; Specific aim is executed zinc, boron fertilizer, increases production extremely significantly, has greatly promoted micro-fertile application.Since 20 century 70s, the research of China's trace element fertilizer and application obtain more all-round developing.The first, generally carry out the investigation of content of soil trace element, result shows that soil lacking boron area is many more than 40%, lacks zinc area many more than 20%, manganese deficiency, iron deficiency, lacks long-pending 10%, 5%, 1% left and right that is respectively of copper face.Second, extensively carry out field efficiency test, obtain micro-fertile application technique and effect of increasing production thereof, particularly paddy rice, the corn of nearly 30 kinds of crops (grain, cotton, oil, really, vegetables Lay, special product etc.) and execute zinc, cotton, oily Lay are executed the application technique standard of boron and are applied at national model Spread in China.The 3rd, start to inquire on utility theory, having set forth red soil, terra calcis, cinnamon soil, black earth, brown earth, purple soil etc. fixes the absorption of zinc, the feature that desorb discharges, discuss boron deficiency to cotton, oily Lay, sesame, sesame etc., lacked zinc to the plant nutritions such as wheat, corn, tomato and the impact of growing.The 4th, micro-fertilizer such as zinc, boron, manganese, copper are used area steady-state growth, increase every year on average 1000 ten thousand mu, have reached 100,000,000 mu the nineties in 20th century, reach 200,000,000 mu 20 end of the centurys, further bring huge benefit to agriculture production.Since entering 21 century, China, on the basis of single trace element fertilizer research application, has carried out again trace element and macroelement, and between trace element and research and application large, secondary and micro-element fertilizers.
China is a large agricultural country, and agricultural is the basis of national economy, is the Primary Industry that cannot replace.Modern agriculture is take low input, high production, high-level efficiency and Sustainable development as feature.And closely-related chemical fertilizer industry and water resources are utilized the important substance basis of modern agricultural production and development especially therewith.Chemical fertilizer occupies an important position in agriculture production.Estimate according to Food and Argriculture OrganizationFAO (FAO), in the volume increase of developing country's grain, wherein 55% effect from chemical fertilizer.But due to factors such as volatilization, loss, infiltrations, in this season utilization ratio of China's chemical fertilizer, nitrogenous fertilizer is about 30-35% at present, and phosphate fertilizer is about 10-25%, and potash fertilizer is 35-50%, well below developed country's level.Low utilization rate of fertilizer not only causes huge financial loss, but also can cause serious environmental pollution, the eutrophication of for example water body, and farmland nitrogen is overflowed on the particularly impact etc. of ozonosphere of atmospheric layer, and then the health of human body has been formed to very large threat.Therefore, improve the utilization ratio of fertilizer, alleviate its pollution to environment, develop sustainable high-efficiency agriculture and become the common problem of paying close attention in various countries.
Dry early lack of water is restriction China's agricultural development and the important factor of accelerating desertification of land.The statistical information relevant according to country show, China's Desertification Soil area 262.2 ten thousand km', account for 27.4% of territory total area, and the direct economic loss causing because of desertification every year reaches 54,000,000,000 yuan.The big area situation that No kernels or seeds are gathered, as in a year of scarcity often occurs in a lot of areas.China's agricultural water accounts for 80% left and right of water resources consumption, but global water resources crisis makes Irrigation farming also must walk the evolutionary path of water conservation water saving.Therefore, improving Farmland Water utilization ratio is the central task of China's agricultural.
In recent years, in soil with water-absorbing polymer especially High hydrophilous resin improve the nutrition of plant and water regime oneself through causing people's extensive concern.Research is found, in agricultural, use water-absorbing polymer for improvement soil physical properties, promote seed germination and emerge, improve seedling surviving rate, to reduce plant all very potential to the needs of irrigating, many-side such as raising plant recovery of nutrient etc., and be widely applied, the actual popularization of High hydrophilous resin also lacks very much.Major cause is as follows: the one, and synthesizing super absorbent resin is on the high side; Another one major cause is function singleness, is difficult to meet many-sided demand of plant nutrition.
High hydrophilous resin is the macromole that a class contains hydrophilic radical and crosslinking structure, is made the earliest by the starch-grafted polyacrylonitrile of the employings such as Fanta through saponification again.Press raw material and divide, have starch-series (grafts, carboxymethylation etc.), cellulose-based (carboxymethylation, grafts etc.), several large classes of synthesized polymer system (polyacrylic, polyethenol series, polyoxyethylene system etc.).Wherein polyacrylic High hydrophilous resin, compared with starch-series and cellulose-based comparing, has the series of advantages such as production cost is low, technique is simple, production efficiency is high, water-retaining capacity is strong, shelf life of products is long, becomes the study hotspot in current this field.During world's High hydrophilous resin is produced at present, polyacrylic accounts for 80%.
High hydrophilous resin is generally the polymer electrolyte that contains hydrophilic radical and crosslinking structure.Before water suction, macromolecular chain is drawn close tangle up mutually, is cross-linked to each other and reticulates structure, thereby reach on the whole fastening.While contact with water, water molecules is penetrated in resin by wicking action and diffusion, and the ionizing group on chain ionizes in water.Because the electrostatic repulsion between homo-ion on chain makes macromolecular chain stretching, extension swelling.Due to electric neutrality requirement, gegenion can not move to resin outside, the poor formation reverse osmotic pressure of ionic concn between the solution of resin inside and outside.Water further enters in resin under the effect of reverse osmotic pressure, forms hydrogel.Meanwhile, the cross-linked structure of resin itself and hydrogen bond action, limited again the unlimited expansion of gel.In the time containing a small amount of salt in water, reverse osmotic pressure reduces, and simultaneously due to the shielding effect of gegenion, macromolecular chain is shunk, and causes the water-retaining capacity of resin greatly to decline.Conventionally only 1/10 left and right in deionized water of the water-retaining capacity of High hydrophilous resin in 0.9% NaCl solution.Water suction and water conservation are two aspects of a problem, and Lin Runxiong etc. have carried out Thermodynamic Discussion to this.Under certain temperature and pressure, High hydrophilous resin can spontaneously absorb water, and water enters in resin, the free enthalpy of whole system is reduced, until balance.If water is overflowed from resin, free enthalpy is raise, be unfavorable for the stable of system.Differential thermal analysis shows, the water that High hydrophilous resin absorbs more than C still has 50% to be enclosed in gel network at 150 °.Therefore, even exert pressure under normal temperature, water also can not overflowed from High hydrophilous resin, and this is to be determined by the thermodynamic property of High hydrophilous resin.
Although the exploitation of High hydrophilous resin only have the history of more than 30 year, its development is very noticeable.No matter be that research or the application of synthesizing aspect studied very active, existing starch based, as starch grafted acrylate etc., synthetic class, as polyacrylate, cellulose family etc., polymerized form has aqueous solution polymerization, inverse suspension polymerization etc., and the form of product has Powdered, pearl, membranaceous and fibrous etc.
Application agriculturally, because High hydrophilous resin cost is high, seriously hinder the application of High hydrophilous resin, numerous domestic scientific worker is doing a large amount of work aspect reduction High hydrophilous resin cost, but mainly concentrating in polymerization system, most work adds as wilkinite, the cheap materials such as the inorganic soil such as kaolin and Attapulgite mineral, reach the object reducing costs, can improve the hydrogel intensity after water-keeping material water suction although add some inorganic mineral, but the High hydrophilous resin soil addition that performance is good is lower, can not fundamentally reduce raw materials cost.Product function only has the water suction the same with common water-absorbing resin, releases water function in addition, lacks trophic function.
Publication number is that the application for a patent for invention of CN101113119A discloses a kind of water keeping fertilizer and preparation method thereof, it is mixing super absorbent resin composite making with sequestrant, provide some nutritive ingredients by sequestrant, and this method has no idea to reduce the tooling cost of super absorbent resin, add various composition finished products further to improve the cost of manufacturing simultaneously, and the imbalance of microelement match in this fertilizer is unbalanced, is difficult to play good effect of fertilizer.
Summary of the invention
The object of this invention is to provide a kind of slow release type trace element fertilizer;
The present invention has adopted following technical scheme: a kind of slow release type trace element fertilizer, it is characterized in that, and comprise following composition:
50-80 parts by weight of acrylic acid, the dry natural sheep excrement of 30-50 weight part, urea 60-90 weight part, Secondary ammonium phosphate 10-15 weight part, the indolylacetic acid of the zinc of the iron of the calcium of 0.5-1.2 weight part, the magnesium of 0.2-1.5 weight part, 0.4-0.8 weight part, the boron of 0.1-0.3 weight part, 0.05-0.25 weight part, the molybdenum of 0.25-0.4 weight part, 0.0008-0.0025 weight part, the choline chloride 60 of 0.6-0.8 weight part, the amino acid of 0.1-0.2 weight part, the alkyl sodium sulfonate of 0.7-0.9 part, and make according to following steps:
1) 50-80 parts by weight of acrylic acid is placed in to container, adds 350 parts by weight of deionized water to stir, by potassium hydroxide adjusting pH value, make system pH in 7.0 left and right;
2) take the dry natural sheep excrement of 30-50 weight part, be ground into 100 object powder;
3) by step 2) the sheep excrement powder that makes adds in the solution that step 1 makes, then adds urea 60-90 weight part, logical nitrogen high-speed stirring 30 minutes after Secondary ammonium phosphate 10-15 weight part stirring and dissolving;
4) by the solution of step 3 under the pressure of 0.03-0.05 Mpa, be heated to 65 ° of C gelatinizations 20 minutes;
5) add oxygenant persulfuric acid sylvite 1.0 weight parts, add reductive agent S-WAT 1.0 weight parts, after stirring, add linking agent N, N '-methylene-bisacrylamide 0.5 weight part, polymerization in the time that temperature is 50-60 ℃, polymerization time is 1 hour, obtains crosslinking polymerization product;
6) crosslinking polymerization product step 5 being obtained is moved in open container, add appropriate solution, described solution, containing the calcium of 0.5-1.2 weight part, the magnesium of 0.2-1.5 weight part, the iron of 0.4-0.8 weight part, the boron of 0.1-0.3 weight part, the zinc of 0.05-0.25 weight part, the molybdenum of 0.25-0.4 weight part, the indolylacetic acid of 0.0008-0.0025 weight part, the choline chloride 60 of 0.6-0.8 weight part, the amino acid of 0.1-0.2 weight part, the alkyl sodium sulfonate of 0.7-0.9 part, fully stirs after 10 minutes and leaves standstill 2 hours;
7) product that will step 6) be moved in baking oven after taking out, and with anhydrous methanol dehydration 2 times, then be placed in baking oven with absolute ethanol washing, in 70 ℃ of oven dry, pulverize, and after 30 mesh sieves, obtain the finished product.
The nutrient content of sheep excrement and character: moisturely in sheep excrement be divided into 65.5%, organic 31.4%, nitrogen is 0.65%, and phosphorus is 0.47%, and potassium is 0.23%.Sheep excrement is of close texture and is dried, and nutriment in a fertilizer is dense, and nutrient content is high, and sheep excrement itself is also a kind of good water-retaining agent.The present invention is take vinylformic acid, sheep excrement powder as base material, and the persulfuric acid sylvite of employing is as oxygenant, and S-WAT is as reductive agent, N, N '-methylene-bisacrylamide, adopts redox initiation system, polymerization under logical condition of nitrogen gas, and after manufacturing procedure, obtain crosslinking polymerization product; In this fertilizer, contain various trace elements and suitable proportioning, wherein alkyl sodium sulfonate has good tackiness to the Foliage Absorption of food crop simultaneously, promotes the stomatal opening of blade cell, has improved the effect that absorbs nutrition; The indolylacetic acid energy coordinate plant growth of trace and the plant hormone of growth, indolylacetic acid is under the effect of indoleacetic acid oxidase, oxidized destruction loses vigor, indoleacetic acid oxidase vigor size in plant materials, level to indolylacetic acid in control agent plays an important role, thereby affects the growth of plant.
Slow release type trace element fertilizer of the present invention has improved water absorbent rate to a great extent, after meeting water, can expand rapidly, in salt solution, improve water-intake rate, in the rainy season of northwest arid area, compound water retaining agent in fertilizer can drink up the rain, and can long time retaining water content validity after water suction, makes it to be stored in soil, improve soil moisture utilization ratio, for plant provides guarantee.The soil erosion of having avoided the eluviation of rainwater to bring, has also avoided fertilizer to run off in a large number, has improved utilization rate of fertilizer, for plant provides guarantee in the long growing nutrient demand of arid season.After agricultural, especially, in the Northwest of drought and water shortage, use this product, the effect that can effectivelyly play water suction, water conservation, soil moisture conservation, nutrition, slowly-releasing, take root, urge root and improvement Soil structure.
Water retention property by slow release type trace element fertilizer of the present invention is good, biological and chemical good stability, the function that regulating crop growth is grown is more complete, effect is better, simultaneously take natural sheep excrement as base-material, retain effective nutritive ingredient of sheep excrement, expand effective utilization of resource, and can significantly reduce costs.
Embodiment
Preparation and performance below by specific embodiment to high water absorbing resin in nutrition type of the present invention are described further.
Embodiment 1
1) 50 parts by weight of acrylic acid are placed in to container, add 350 parts by weight of deionized water to stir, by potassium hydroxide adjusting pH value, make system pH in 7.0 left and right;
2) take the dry natural sheep excrement of 30 weight parts, be ground into 100 object powder;
3) by step 2) the sheep excrement powder that makes adds in the solution that step 1 makes, then adds urea 60 weight parts, logical nitrogen high-speed stirring 30 minutes after Secondary ammonium phosphate 10-15 weight part stirring and dissolving;
4) by the solution of step 3 under the pressure of 0.03 Mpa, be heated to 65 ° of C gelatinizations 20 minutes;
5) add 1.0 weight part persulfuric acid sylvite, add 1.0 weight part S-WATs, after stirring, add linking agent N, N '-methylene-bisacrylamide 0.5 weight part, polymerization in the time that temperature is 50 ℃, polymerization time is 1 hour, obtains crosslinking polymerization product;
6) crosslinking polymerization product step 5 being obtained is moved in open container, add appropriate solution, described solution, containing the calcium of 0.5 weight part, the magnesium of 0.2 weight part, the iron of 0.4 weight part, the boron of 0.1 weight part, the zinc of 0.05 weight part, the molybdenum of 0.25 weight part, the indolylacetic acid of 0.0008 weight part, the choline chloride 60 of 0.6 weight part, the amino acid of 0.1 weight part, the alkyl sodium sulfonate of 0.7 part, fully stirs after 10 minutes and leaves standstill 2 hours;
7) product that will step 6) be moved in baking oven after taking out, and with anhydrous methanol dehydration 2 times, then be placed in baking oven with absolute ethanol washing, in 70 ℃ of oven dry, pulverize, and after 30 mesh sieves, obtain the finished product.
Embodiment 2
1) 80 parts by weight of acrylic acid are placed in to container, add 350 parts by weight of deionized water to stir, by potassium hydroxide adjusting pH value, make system pH in 7.0 left and right;
2) take the dry natural sheep excrement of 50 weight parts, be ground into 100 object powder;
3) by step 2) the sheep excrement powder that makes adds in the solution that step 1 makes, then adds urea 90 weight parts, logical nitrogen high-speed stirring 30 minutes after Secondary ammonium phosphate 15 weight part stirring and dissolving;
4) by the solution of step 3 under the pressure of 0.05 Mpa, be heated to 65 ° of C gelatinizations 20 minutes;
5) add oxygenant persulfuric acid sylvite 1.0 weight parts, add reductive agent S-WAT 1.0 weight parts, after stirring, add linking agent N, N '-methylene-bisacrylamide 0.5 weight part, polymerization in the time that temperature is 60 ℃, polymerization time is 1 hour, obtains crosslinking polymerization product;
6) crosslinking polymerization product step 5 being obtained is moved in open container, add appropriate solution, described solution, containing the calcium of 1.2 weight parts, the magnesium of 1.5 weight parts, the iron of 0.8 weight part, the boron of 0.3 weight part, the zinc of 0.25 weight part, the molybdenum of 0.4 weight part, the indolylacetic acid of 0.0025 weight part, the choline chloride 60 of 0.8 weight part, the amino acid of 0.2 weight part, the alkyl sodium sulfonate of 0.9 part, fully stirs after 10 minutes and leaves standstill 2 hours;
7) product that will step 6) be moved in baking oven after taking out, and with anhydrous methanol dehydration 2 times, then be placed in baking oven with absolute ethanol washing, in 70 ℃ of oven dry, pulverize, and after 30 mesh sieves, obtain the finished product.
The water retention property of the slow release type trace element fertilizer by method gained of the present invention is good, biological and chemical good stability, simultaneously take natural sheep excrement as base-material, has retained effective nutritive ingredient of sheep excrement, expand effective utilization of resource, and can significantly reduce costs.
Claims (1)
1. a slow release type trace element fertilizer, is characterized in that, comprises following composition:
50-80 parts by weight of acrylic acid, the dry natural sheep excrement of 30-50 weight part, urea 60-90 weight part, Secondary ammonium phosphate 10-15 weight part, the indolylacetic acid of the zinc of the iron of the calcium of 0.5-1.2 weight part, the magnesium of 0.2-1.5 weight part, 0.4-0.8 weight part, the boron of 0.1-0.3 weight part, 0.05-0.25 weight part, the molybdenum of 0.25-0.4 weight part, 0.0008-0.0025 weight part, the choline chloride 60 of 0.6-0.8 weight part, the amino acid of 0.1-0.2 weight part, the alkyl sodium sulfonate of 0.7-0.9 part, and make according to following steps:
1) 50-80 parts by weight of acrylic acid is placed in to container, adds 350 parts by weight of deionized water to stir, by potassium hydroxide adjusting pH value, make system pH 7.0;
2) take the dry natural sheep excrement of 30-50 weight part, be ground into 100 object powder;
3) by step 2) the sheep excrement powder that makes adds in the solution that step 1 makes, then adds urea 60-90 weight part, logical nitrogen high-speed stirring 30 minutes after Secondary ammonium phosphate 10-15 weight part stirring and dissolving;
4) by the solution of step 3 under the pressure of 0.03-0.05 Mpa, be heated to 65 ° of C gelatinizations 20 minutes;
5) add oxygenant persulfuric acid sylvite 1.0 weight parts, add reductive agent S-WAT 1.0 weight parts, after stirring, add linking agent N, N '-methylene-bisacrylamide 0.5 weight part, polymerization in the time that temperature is 50-60 ℃, polymerization time is 1 hour, obtains crosslinking polymerization product;
6) crosslinking polymerization product step 5 being obtained is moved in open container, add appropriate solution, described solution, containing the calcium of 0.5-1.2 weight part, the magnesium of 0.2-1.5 weight part, the iron of 0.4-0.8 weight part, the boron of 0.1-0.3 weight part, the zinc of 0.05-0.25 weight part, the molybdenum of 0.25-0.4 weight part, the indolylacetic acid of 0.0008-0.0025 weight part, the choline chloride 60 of 0.6-0.8 weight part, the amino acid of 0.1-0.2 weight part, the alkyl sodium sulfonate of 0.7-0.9 part, fully stirs after 10 minutes and leaves standstill 2 hours;
7) product that will step 6) be moved in baking oven after taking out, and with anhydrous methanol dehydration 2 times, then be placed in baking oven with absolute ethanol washing, in 70 ℃ of oven dry, pulverize, and after 30 mesh sieves, obtain the finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210188075.8A CN102702444B (en) | 2012-06-08 | 2012-06-08 | Sustained release trace element fertilizer |
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| CN201210188075.8A CN102702444B (en) | 2012-06-08 | 2012-06-08 | Sustained release trace element fertilizer |
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| CN102702444B true CN102702444B (en) | 2014-06-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1361090A (en) * | 2000-12-29 | 2002-07-31 | 广东工业大学 | Drought-resisting water-maintaining multifunctional compoiste fertilizer and its production process |
| CN1371892A (en) * | 2002-02-08 | 2002-10-02 | 吉林大学 | Preparation for organic high water absorption and permeation resistant fertilizer |
| CN101113119A (en) * | 2007-06-22 | 2008-01-30 | 中国农业大学 | Water-conserving fertilizer and method for preparing same |
| CN102010274A (en) * | 2010-12-28 | 2011-04-13 | 周志勇 | Balanced slow-release fertilizer |
| DE102010005363A1 (en) * | 2010-01-22 | 2011-07-28 | Oelschläger, Andreas, Dr., 45661 | Particulate, water-, nutrients- and microorganisms absorbing carbon based storage material with enhanced specific surface, useful e.g. for stabilizing slopes and in flower and plant breeding, comprises organic and inorganic additives |
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2012
- 2012-06-08 CN CN201210188075.8A patent/CN102702444B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1361090A (en) * | 2000-12-29 | 2002-07-31 | 广东工业大学 | Drought-resisting water-maintaining multifunctional compoiste fertilizer and its production process |
| CN1371892A (en) * | 2002-02-08 | 2002-10-02 | 吉林大学 | Preparation for organic high water absorption and permeation resistant fertilizer |
| CN101113119A (en) * | 2007-06-22 | 2008-01-30 | 中国农业大学 | Water-conserving fertilizer and method for preparing same |
| DE102010005363A1 (en) * | 2010-01-22 | 2011-07-28 | Oelschläger, Andreas, Dr., 45661 | Particulate, water-, nutrients- and microorganisms absorbing carbon based storage material with enhanced specific surface, useful e.g. for stabilizing slopes and in flower and plant breeding, comprises organic and inorganic additives |
| CN102010274A (en) * | 2010-12-28 | 2011-04-13 | 周志勇 | Balanced slow-release fertilizer |
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Effective date of registration: 20140514 Address after: 223400 Lianshui County of Huaian province Jiangsu City Lian New Road No. 28 Patentee after: Jiangsu Huachang Chemical (Lianshui) Co., Ltd. Address before: 312464, Shaoxing, Zhejiang Province, Shengzhou Town, Taoyuan Road, No. 207, third floor Patentee before: SHENGZHOU LINMEI BIOTECHNOLOGY CO., LTD. |
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Inventor after: Zhang Hanqing Inventor after: Bai Ye Inventor after: Min Fanguo Inventor before: Wu Gang |
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Effective date of registration: 20160831 Address after: Huaian 223400 Huaian city of Jiangsu province Lianshui county (Xue Hang) circular economy industrial park Lian New Road No. 28 Patentee after: Jiangsu Huayuan Ecological Agriculture Co., Ltd. Address before: 223400 Lianshui County of Huaian province Jiangsu City Lian New Road No. 28 Patentee before: Jiangsu Huachang Chemical (Lianshui) Co., Ltd. |