CN101314552B - Low cost environment-friendly type composite sustained-release fertilizer - Google Patents
Low cost environment-friendly type composite sustained-release fertilizer Download PDFInfo
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- CN101314552B CN101314552B CN2007100227496A CN200710022749A CN101314552B CN 101314552 B CN101314552 B CN 101314552B CN 2007100227496 A CN2007100227496 A CN 2007100227496A CN 200710022749 A CN200710022749 A CN 200710022749A CN 101314552 B CN101314552 B CN 101314552B
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Abstract
The invention discloses a low-cost environment-friendly composite loss-control fertilizer. The preparation method for the low-cost environment-friendly composite loss-control fertilizer comprises the following steps that: fertilizer, attapulgite, polyacrylamide and poly-ferroaluminum chloride are mixed for granulation; and nitrogen, phosphor and potassium are fixed into soil. The low-cost environment-friendly composite loss-control fertilizer can reduce the loss of nitrogen element by 20 to 60 percent, reduce the loss of phosphor element by 30 to 75 percent and reduce the loss of potassium fertilizer by 25 to 70 percent. Moreover, the utilization rate of composite fertilizer is improved and the pollution of the nitrogen element and the phosphor element on water and the atmosphere is reduced.
Description
Technical field
The invention belongs to a kind of fertilizer, specifically is a kind of control release compound fertilizer.
Background technology
2002, United Nations Environment Programme (UNEP) delivered " global environment prospect " report, and big G﹠W pollution deterioration is classified as first of the eight overall situation problems.The most important inducement of topsoil is greenhouse gas emission, and it mainly is that nitrogen, phosphorus etc. enter water body and cause body eutrophication that water pollutes.One studies show that, because a large amount of uses and the improper use of chemical fertilizer, China has 123.5 ten thousand tons of nitrogen to flow to rivers and lakes by the surface water river rising in Ningxia and flowing into central Shaanxi every year, and 49.4 ten thousand tons enter underground water, and 2,990,000 tons enter atmosphere.Nitrogen water body such as enters through approach such as runoff, drip washing, causes the rivers,lakes and seas eutrophication, and volatile matter is with N
2The O form enters atmosphere, causes greenhouse gases to increase.As seen, a large amount of uses of chemical fertilizer have formed the solid of " from underground to aerial " and have polluted, and the loss that causes is startling.
Nitrogen source in the water body is a lot, and exogenous load and endogenous load is wherein arranged.Ectogenic nitrogen has pollution of area source and point-source pollution.Pollution of area source is mainly derived from agricultural, accounts for 70%, and point-source pollution is mainly derived from sanitary sewage and trade effluent, and endogenous is loaded the release of nitrogen in the settling, aquatic animals and plants metabolism is decomposed etc.
About 5 * the 109t of the annual loss soil in the whole nation, nutrients such as the nitrogen of taking away, phosphorus, potassium and trace element are equivalent to the chemical fertilizer in 1 year in the whole nation approximately and use total amount.The flow through every year about 116 * 109t of quantity of sand and mud in the Sanmenxia Gorge of the Huanghe valley wherein contains full nitrogen, full phosphorus is 416.209kt.Shanghai Institute for Environmental Research studies show that: the nineties, part agricultural run-off nitrogen amount was 15～45kg/hm
2, and the initial stage eighties has only 210～415kg/hm
2American National Bureau for Environmental Protection environmental research laboratory Omemik studies show that, in Soil Nitrogen amount and the phosphorus amount based on area loss with soil erosion of agricultural, is respectively 7 times and 10 times of forest cover district.The U.S. has 57%～64% rivers and lakes to be subjected to non-point pollution.It wherein mainly is agricultural non-point pollution.Because Chaohu total nitrogen, the total phosphorus content severe overweight in one of improper fertilization China five big freshwater lakes.The content of nitric nitrogen all is higher than the low water season and the period when a river is at its normal level in 4 the section water bodys in the second Song Hua River wet season downstream, mainly be since the nitrogen that use in paddy field, riverine two sides and nonirrigated farmland, phosphate fertilizer with face of land runoff due to the water body migration.The approach that nitrogen, phosphate fertilizer are lost to from the farmland the waters mainly is runoff and seepage drip washing.Nitrogen in the soil and the fertilizer nitrogen that is manured into soil, under the effect of rainfall and irrigation water, part directly arrives soil lower floor with compound form (as urea) drip washing, and soil lower floor is arrived in most of final nitric nitrogen, nitrite nitrogen and drip washing of ammonia-state nitrogen form with solubility.
As seen, the control loss of chemical fertilizer is to reduce the matter of utmost importance that water pollutes.Existing slow-release fertilizer or controlled release are fertile to be difficult to be accepted by vast farmers because cost is too high, is unfavorable for large-scale promotion application, seems very necessary so develop a kind of low-cost environment-friendly chemical fertilizer control mistake technology.
Summary of the invention
The purpose of this invention is to provide a kind of low cost environment-friendly type composite sustained-release fertilizer, utilize natural 1-dimention nano mineral material---composite organic floculant polyacrylamide of attapulgite and inorganic flocculating agent aluminium iron polychloride, reach nitrogen (ammonia nitrogen, urea etc.) and phosphorus element (phosphate radical etc.) are fixed in the soil, reduce the loss of nitrogen and phosphorus element by leaching, runoff and the three kinds of approach that volatilize.
Technical scheme of the present invention is as follows:
Low cost environment-friendly type composite sustained-release fertilizer is characterized in that the weight proportion of each component is: fertilizer: attapulgite: polyacrylamide: aluminium iron polychloride=1000:100-300:1-5:2-10.
Described fertilizer is meant nitrogenous fertilizer, phosphate fertilizer, potash fertilizer or its any mixture.
Described low cost environment-friendly type composite sustained-release fertilizer is characterized in that its particle diameter is controlled at 2-6mm.
Described fertilizer is the mixture that meets plant growth of urea, monoammonium phosphate, diammonium phosphate, ammonium chloride, light ammonium carbonate, Repone K.
Its principle is: the character of utilizing the nano pore structure of attapulgite, high specific area and high ion exchange volume on the one hand, nitrogen and the phosphorus element mode by chemistry and physical adsorption is fixed on nano pore inside and the outside surface, utilize the strong flocculation characteristics of polyacrylamide and aluminium iron polychloride then, make the flocculation of attapulgite and soil on every side thereof, form bigger attapulgite molecular network.So not only can increase attapulgite to the adsorption rate of nitrogen and phosphorus element but also can stop attapulgite to be taken away, thereby reach the purpose of chemical fertilizer nutrient controlled release by current.
Beneficial effect:
1, present technique can reduce nitrogen loss and reach 20%-60%, reduces plain loss of phosphorus and reaches 30%-75%, reduces the potash fertilizer loss and reaches 25%-70%.Improve composite fertilizer's utilization ratio, reduce nitrogen, phosphorus element water body and atmospheric pollution.
2, cost is low.The sustained-release fertilizer of making, every bag of price is not higher than conventional of the same type compound fat.Easily accepted by the peasant, big area is promoted, thereby has much using value and market potential.
3, institute adds the whole environmental friendliness of material, and the tool soil improvement action.
Embodiment:
1, according to soil or crop needs, aborning with raw materials such as urea, monoammonium phosphate, diammonium phosphate, ammonium chloride, light ammonium carbonate, Repone K mixing by a certain percentage.Then, mixed raw mix: attapulgite: polyacrylamide: aluminium iron polychloride is pressed 1000:(100-300): (1-5): the proportioning mixing granulation of (2-10), particle diameter is controlled at 2-6mm.Both can make nitrogen, phosphorus binary compound fertilizer, also can make nitrogen, phosphorus, potassium Nitrogen, Phosphorus and Potassium.The chemical fertilizer of making, chemical fertilizer application method and usage quantity are used and both can routinely.
2, with attapulgite: polyacrylamide: aluminium iron polychloride with composite fertilizer's stirring and evenly mixing, uses as fertilizer synergistic agent then by the proportioning mixing in 1.
Claims (4)
1. low cost environment-friendly type composite sustained-release fertilizer is characterized in that the weight proportion of each component is: fertilizer: attapulgite: polyacrylamide: aluminium iron polychloride=1000: 100-300: 1-5: 2-10.
2. low cost environment-friendly type composite sustained-release fertilizer according to claim 1 is characterized in that described fertilizer is meant phosphate fertilizer, potash fertilizer or its any mixture.
3. low cost environment-friendly type composite sustained-release fertilizer according to claim 1 is characterized in that its particle diameter is controlled at 2-6mm.
4. low cost environment-friendly type composite sustained-release fertilizer according to claim 1 is characterized in that described fertilizer is the mixture that meets plant growth of urea, monoammonium phosphate, diammonium phosphate, ammonium chloride, light ammonium carbonate, Repone K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100227496A CN101314552B (en) | 2007-05-29 | 2007-05-29 | Low cost environment-friendly type composite sustained-release fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100227496A CN101314552B (en) | 2007-05-29 | 2007-05-29 | Low cost environment-friendly type composite sustained-release fertilizer |
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| Publication Number | Publication Date |
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| CN101314552A CN101314552A (en) | 2008-12-03 |
| CN101314552B true CN101314552B (en) | 2011-04-13 |
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| CN2007100227496A Expired - Fee Related CN101314552B (en) | 2007-05-29 | 2007-05-29 | Low cost environment-friendly type composite sustained-release fertilizer |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440004B (en) * | 2008-12-22 | 2012-02-15 | 张超 | Method for preparing high tower control release compound fertilizer |
| CN102515959B (en) * | 2011-12-23 | 2013-04-24 | 北京瑞泰丰商务有限公司 | Water-soluble polymer synergist used for fertilizers, its preparation method and application |
| CN103224424B (en) * | 2013-04-12 | 2014-05-07 | 湖北三得利肥业有限公司 | Sustained and controlled release composite fertilizer and preparation method thereof |
| CN103724109A (en) * | 2013-12-09 | 2014-04-16 | 广西科技大学 | Slow release fertilizer and preparation method thereof |
| CN103708915A (en) * | 2013-12-09 | 2014-04-09 | 广西科技大学 | Slow release fertilizer and preparation method thereof |
| CN103708917A (en) * | 2013-12-09 | 2014-04-09 | 广西科技大学 | Slow release fertilizer and preparation method thereof |
| CN103708916A (en) * | 2013-12-09 | 2014-04-09 | 广西科技大学 | Slow release fertilizer and preparation method thereof |
| CN103724110A (en) * | 2013-12-09 | 2014-04-16 | 广西科技大学 | Slow release ammonium carbonate fertilizer and preparation method thereof |
| CN105801228A (en) * | 2014-12-27 | 2016-07-27 | 锦州硕丰农药集团有限公司 | Controlled release medical fertilizer and preparation method thereof |
| CN105409571B (en) * | 2015-12-28 | 2018-12-28 | 铜仁学院 | The method for improving heavy saline output of cotton and planting benefit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850743A (en) * | 2006-05-18 | 2006-10-25 | 中国科学院等离子体物理研究所 | Nitrogen fertilizer solidifying method by active soil, flocculant, adsorbent composite material and fertilizer |
| CN1875673A (en) * | 2006-06-10 | 2006-12-13 | 中国科学院等离子体物理研究所 | Method for coating seeds by combined use of active soil, adsorbing and flocculating agent and coating agent |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850743A (en) * | 2006-05-18 | 2006-10-25 | 中国科学院等离子体物理研究所 | Nitrogen fertilizer solidifying method by active soil, flocculant, adsorbent composite material and fertilizer |
| CN1875673A (en) * | 2006-06-10 | 2006-12-13 | 中国科学院等离子体物理研究所 | Method for coating seeds by combined use of active soil, adsorbing and flocculating agent and coating agent |
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| CN101314552A (en) | 2008-12-03 |
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Granted publication date: 20110413 Termination date: 20110529 |