CN1308595A - Reduction of nitrate leaching from cultivated soils - Google Patents

Reduction of nitrate leaching from cultivated soils Download PDF

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Publication number
CN1308595A
CN1308595A CN99808365A CN99808365A CN1308595A CN 1308595 A CN1308595 A CN 1308595A CN 99808365 A CN99808365 A CN 99808365A CN 99808365 A CN99808365 A CN 99808365A CN 1308595 A CN1308595 A CN 1308595A
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purposes
apg
compound
requirement
soil
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贝蒂纳·科普-霍尔特威斯彻
多里斯·贝尔
斯蒂芬·冯塔帕维克扎
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BASF Personal Care and Nutrition GmbH
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Cognis Deutschland GmbH and Co KG
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    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/70Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting wettability, e.g. drying agents
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/50Surfactants; Emulsifiers

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  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Fertilizers (AREA)
  • Cultivation Of Plants (AREA)

Abstract

The invention relates to the utilization of ecologically compatible surface active agent compounds from the class consisting of water-soluble O/W-type alkyl(oligo)glycoside compounds (APG compounds) by applying the latter on the surface of the soil as additive for preventing nitrate leaching from the area of the plant roots in cultivated lands during sprinkling and/or irrigation. Preferably, the APG compounds are applied in the soil together with lipophilic saturated and/or olefinic unsaturated hydrocarbon radicals and aerobic and anaerobic degradable organic compounds having fatty structures.

Description

Minimizing leaching from anthropogenic soil goes out nitrate
Now, suitably replenishing nitrogen very important with cultivation to the nutrition of plant has been a kind of general knowledge.Water-soluble and/or water-fast nitrogen compound is organic and typical composition mineral manure under working conditions.In all relevant fields, in agricultural, forestry, rural area and gardening nursing, nitrogen basal growth auxiliary agent is incorporated in the anthropogenic soil in large quantities.
The information of the effect and function of the various nitrogenous fertilizer of Shi Yonging can find in relevant scientific and technical literature now, for example referring to " Agrarwirtschaft ", Grundstufe 1, Fachtheorie fur Bodenkunde, Chemie, Pflanzenernahrung u.a., BLV Veriagsgesellschaft Munchen, Landwirtschaftsverlag Munster-Hiltrup, more particularly at the 110-113 page or leaf, 3.1.3 saves " Stickstoffdungemittel (nitrogenous fertilizer) " and GARTENBAULICHE BERUFSSCHULE, the 1st volume, Grundwissen des Gartners, Verlag Eugen Ulmer, Stuttgart, the 7th edition, more particularly at the 216-219 page or leaf, the chapters and sections name is called the subordinate list 39 on " Stickstoffdunger (nitrogenous fertilizer) " and 218 pages.The nitrogen of the plant absorbing of most of kinds is mainly nitrate ion (NO soluble in water 3 -) form.Other ingredients soluble in water or not soluble in water through the compound nitrification that is particularly caused by bacterial flora, final all change into nitrate (also often being called kentite) with the nitrogen of form of ownership in the soil after being introduced in the soil.Although the nitrogen of these forms soluble in water is very important to the growth of plant, the problem of following existence is that nitrate is washed the deep layer of soil from plant roots, goes in arriving underground water.This process has brought serious environmental to pollute, does not therefore expect, it is the inevitable result that natural precipitation and/or plant root are irrigated, and rainfall and/or irrigation are very important concerning the growth of plant.
The present invention's instruction as described below is based on such, amazing observations, i.e. ecological safe surface activeconstituents by will be through selecting, preferably be incorporated in the soil, can substantially reduce from the nitrate of plant root flush away with other compositions that define below.Before describing particular content of the present invention in detail, the technology of still undocumented patent application formerly instruction so far is by incorporated by reference:
Still undocumented German patent application 1970127.6 has been described the low-foaming surfactant concentrated solution that is used to promote plant-growth.More particularly, this patent application has been discussed high density but can have been flowed and the low-foam wetting agents (wetting aids) of dumpable aqueous surfactant base concentrated solution form, is used for strengthening its infiltration and disperseing to advance plant root or the effect around it in the process of watering.These wetting agents contain oil/water type alkyl (many) glycoside compound-also be called " APG compound " here as ecological safe surface bioactive agent composition, and and its blended olefinic unsaturated fatty alcohol, with, optionally, the partial ester that polyvalent alcohol is become with lipid acid also has water-soluble lower alcohol as viscosity modifier in addition as froth suppressor/defoamer.
In an important embodiment, what describe below has utilized the principle of above-mentioned German patent application formerly for the technology contents of further development result.Therefore, formerly the disclosure of German patent application is included as the part of the disclosure of invention here especially.
The instruction of the technology of above-mentioned patent application formerly is based on following problem: look the irrigated area in simple measurement soil, particularly have the land area of dense plant, have sizable difficulty.An example of this situation is the meadow that the part is trampleed on by pedestrian and/or vehicle, though have less or even quite large-area grass often water and also can kill.If attempt to irrigate these areas, water permeates less than deep under ground, specifically permeates the root less than grass.Consequently the plant in the place of being discussed can be owing to the over-drying under-nutrition that becomes, flat-top and unhealthy.Knownly can as the auxiliary agent of feature water be distributed better in whole soil, particularly arrive plant root by using at the water that is used for irrigating with wetting agent.According to above-mentioned instruction in first to file, the surfactivity auxiliary agent is called as oil/water type APG compound, known it use widely in diverse field.The APG compound is to be used for washing composition, particularly the tensio-active agent of cloth-washing detergent.
The instruction of above-mentioned patent application formerly is based on such observation, and promptly the moisture wetting agent of APG base also is the useful wetting agent in the plant-growth of soil irrigation moderate stimulation.But the problem below existing has to be solved: APG base nonionogenic tenside foam in water preparation of the type of being discussed is very many.When being used for washing composition, this can be subjected to human consumer's welcome usually.But for the field of this application that the present invention was concerned about, this is not only unfavorable, and it is gone back or even a significant disadvantage.Typically pressing down the bubble additive is known in detergent applications, but it is improper promptly to promote plant health to grow up to application involved in the present invention.The technology instruction of above-mentioned patent application has formerly been selected promotion for use rather than has been hindered the defoamer or the suds suppressor of plant-growth to combine with the APG based surfactants.Said selected defoamer is the partial ester that Fatty Alcohol(C12-C14 and C12-C18) above-mentioned and/or lower polyol are become with lipid acid.
Another problem that exists in the instruction of this patent application formerly is, make said multicomponent mixture be made into to be easy to form, even must guarantee also at normal temperatures that then this concentrated solution has fully " part (portionability) " by water-reducible concentrated solution.The technical solution that is provided by the instruction of patent application formerly is the above-mentioned multicomponent mixture that contains the suds suppressor of oil/water type APG compound and selected kind, its viscosity by using containing in the concentrated liquid that limited amount low water solubility alcohol controls.
The present invention described herein further finds to be based on following further observations: the APG base wetting agent of the type of being discussed not only promotes irrigation water to penetrate in the Soil structure, and thus, at first, penetrate into plant roots, and the multicomponent aqueous mixture that is incorporated into soil and/or is administered to the over-ground part of plant also have unforeseeable, help solve the effect that above-mentioned undesirable water-soluble nitrate is washed this problem in the underground water.
Theme of the present invention
Therefore, the present invention relates to the purposes of the oil/water-soluble alkyl of water type (oligomeric) glycoside compound (alkyl (oligo) glycoside) (APG compound) ecological safe surface active compound, it is used as auxiliary agent and is incorporated into soil surface, in order to be controlled at rain and/or the process of watering in by amount from the nitrate of the plant root flush away of anthropogenic soil.
Detailed Description Of The Invention
In the embodiment that the present invention selectes; the APG compound that the present invention uses is ecological safe surface active compound; under common working conditions; it particularly under the temperature that can run into usually oil/water type tensio-active agent; promptly when mixing, under the temperature of described scope, flowable water-insoluble organic composition is changed into the form of oil-in-water preparation with water.
For Application Areas of the present invention, these APG compounds and, particularly, the water preparation of these tensio-active agents can typically contain the time that the inorganic and/or fertilizer of N is introduced into soil and be introduced on the surface, soil or inside, soil being different from and/or being same as.In the preferred embodiment of the invention, APG compound or its water preparation are to introduce being different from and/or preferably being same as the time that has switch carbon to introduce that contains the C source, described carbon source can promote the growth of edaphon, particularly strengthens the flora of corresponding microorganism.As below will explaining in detail, particularly suitable carbon source be contain the lipophilic of lipid structure saturated and/or the ethylenically unsaturated hydrocarbons residue, can be aerobic and the organic compound of anaerobic degradation, it and APG compound are introduced in the soil with the form of the above-mentioned oil/water miscible liquid mentioned and/or dispersion liquid together.In the embodiment of a particularly important of the present invention, the APG compound combines with the partial ester that lipid acid is become with Fatty Alcohol(C12-C14 and C12-C18) and/or low-grade monobasic alcohol, and preferably the form with above-mentioned water preparation is applied in the soil, and and then combines with soil than the upper strata.Before going through these specific embodiments, the single composition in the multicomponent compound that preferably uses of specific definition at first below.
Oil/water type APG compound
At first widely with reference to relevant APG compound, the preparation of the APG compound of the type that particularly the present invention relates to and the scientific and technological knowledge and the document of characteristic, people's such as Hill book for example, exercise question is " AlkylPolyglycosides (alkyl polyglycoside) ", VCH-Verlagsgesellschaft mbH, Weinheim 1997.EP 0230598 B1 also provides the preparation of APG compound and the details of characteristic.
For realizing that the preferred APG compound of purpose of the present invention is characterised in that, at least in part, more especially at least mainly uses its alkyl group at least mainly to be derived from alkyl (oligomeric) glycoside compound of straight-chain fatty alcohol.This compounds is the surfactivity auxiliary agent that is widely used.In their industry is used, many important factors are arranged.The wetting agent of known APG base can be fully based on crude substance.They are to obtain as the reaction product of Fatty Alcohol(C12-C14 and C12-C18) and monose, oligosaccharides and/or polysaccharide.When polysaccharide and/or senior oligosaccharides used with Fatty Alcohol(C12-C14 and C12-C18), before forming the APG compound that needs, unzipping was at first caused by hydrolysis in the acid catalyzed reaction and/or alcoholysis effect.The preferred sugared composition that forms the APG compound is glucose and corresponding oligomerization-and polyglucose.But other suitable reactants are based on the sugar compounds of comparable single, the oligomeric and/or many glycosides of seminose, semi-lactosi, pectinose and other.
Be fit to realize that the APG compound of the object of the invention is that conduct is R-O-(G) with general formula XReaction product obtain, wherein, R is primary, at least 6 carbon atoms is preferably arranged, preferred 8-24 the carbon atom and the more preferably linear aliphatic alkyl of 8-18 carbon atom, G is the sugar unit (glycose unit) that contains 5-6 carbon atom, preferably glucose.In tensio-active agent involved in the present invention, oligomeric degree x is also referred to as the DP value, represents the distribution of single glycosides and oligomeric glycosides, normally the number of 1-10, for example number of about 1.2-5, the preferably number of about 1.2-4, the more preferably number of 1.2-2.
Known oil/water type APG compound, promptly can form surface active ingredient O/w emulsion, mentioned kind, can differentiate, promptly by being higher than 7 HLB value by high relatively HLB value, preferably be higher than 8 or 9, particularly scope is differentiated in the HLB of 10-18 value.¨D
The Fatty Alcohol(C12-C14 and C12-C18) that the present invention uses
As mentioned above, multi-function action is owing to these compositions in the multicomponent mixture of the present invention's use.On the one hand, they can play suds suppressor in the practical application of the water of multicomponent mixture dilution preparation, on the other hand, when they are used in the soil, in the time of particularly near plant root, can be used as the carbon source of microorganism growth, particularly promote the growth of organotrophic microorganism (organotrophicmicroerganism).Fatty Alcohol(C12-C14 and C12-C18) is to pass through the aerobic and anaerobic degradation of natural process.As the important carbon source of the present invention, have the lipophilic hydrocarbon of lipid structure in their molecular structure, thereby have the energy supply C-H group of higher concentration organotrophy's microorganism growth.
According to the present invention, Fatty Alcohol(C12-C14 and C12-C18) in the preferred multicomponent mixture can be differentiated by 6-8 carbon atom arranged in the molecule at least, the olefinic and/or the polyenoid that contain 10-28 carbon atom belong to undersaturated Fatty Alcohol(C12-C14 and C12-C18), and the corresponding Fatty Alcohol(C12-C14 and C12-C18) that particularly contains 12-24 carbon atom is particularly preferred.The solidification point scope of these compositions that another preferred parameter that is used for selecting suitable Fatty Alcohol(C12-C14 and C12-C18) is a multicomponent mixture.The scope of the solidification point of preferred corresponding composition is 20 ℃ or lower, more particularly, and 10-15 ℃.
Although Fatty Alcohol(C12-C14 and C12-C18) discussed here, that the present invention preferably uses is based on the crude substance of this class, instruction of the present invention is not limited to these Fatty Alcohol(C12-C14 and C12-C18).The synthetic Fatty Alcohol(C12-C14 and C12-C18), itself in addition can have side chain, also suitable to the mixing element in the content of the present invention.Particularly, can influence the solidification point scope of these pure compositions by this way.
Be suitable for the fatty acid partial ester of the object of the invention
Except and/or to replace above-mentioned Fatty Alcohol(C12-C14 and C12-C18), the fatty acid partial ester of fatty acid partial ester, particularly low-grade monobasic alcohol also be important mix ingredients of the present invention.Particularly, in the lower polyol side, contain the respective compound of 2-6 carbon atom, the respective compound that particularly contains 3-5 carbon atom suits.Consider that from this point especially effectively corresponding glycerol partial ester is because they are easy to obtain as natural materials.Lipid acid in this class partial ester discussed here refers generally to contain the respective compound of 10-24 carbon atom, corresponding C 12-20Monocarboxylic acid be suitable especially.The known lipid acid that type is discussed can be purchased as starting material from natural origin with very big scale.In this case, it also is superior especially using an olefinic and/or polyenoid to belong to unsaturated fatty acids.A kind of suitable especially active substance of being discussed is the undersaturated C of glycerine and olefinic 16/18The partial ester that monocarboxylic acid became, a particularly corresponding ester.This fatty acid ester that can obtain in a large number technically is a Rylo MG 19.
Identical with top Fatty Alcohol(C12-C14 and C12-C18), fatty acid ester described herein can be in soil by natural process aerobic or anaerobic degradation.They also are near the important carbon sources of the microorganism organotrophy growth the plant root.Their use strengthens the growth of plant indirectly by the growth that stimulates soil microorganisms.
The content that is described in further detail of the present invention
According to the present invention, may be only with Fatty Alcohol(C12-C14 and C12-C18) or only use fatty acid partial ester as mix ingredients with the APG composition.But the feature of an embodiment is to be used in combination Fatty Alcohol(C12-C14 and C12-C18) and fatty acid partial ester.Preferred ratio of mixture is-on the basis of the weight part of no water constituent-Yue 1: 1 to 1: 10.Fatty Alcohol(C12-C14 and C12-C18) and fatty acid partial ester are preferably with 1: 1-1: the mixed of 5 (weight parts of no water constituent), more preferably 1: 1-1: 3.
In the multicomponent mixture that the present invention uses, the consumption of APG composition equates at least substantially on weight that with Fatty Alcohol(C12-C14 and C12-C18) and/or partial ester the ratio of mixture of APG and Fatty Alcohol(C12-C14 and C12-C18) and/or partial ester is 1: 1-5: 1, preferred 1: 1-3: 1, and more preferably 1.5-2.5: 1.These numerals refer to the weight part of mixture, count on the basis of anhydrous mixture composition.
But instruction of the present invention is not limited to use excessive APG composition.Also fall into scope of the present invention with excess fats alcohol and/or fatty acid partial ester as the mixture of suds suppressor.
According to No. the 19701127.6th, above-mentioned German patent application formerly, the multicomponent mixture that the present invention relates to generally is to sell or offer the human consumer with the flowable form that contains concentrated liquid.Then, the user dilutes concentrated solution on demand with more water so that this multicomponent mixture is administered in soil and the plant and goes.For multicomponent mixture being made the form that is easy to dilute with water, even also must guarantee its " part " fully at normal temperatures.It is very clear that the above-mentioned instruction in first to file is said, when moisture APG concentrated solution mixes with above-mentioned suds suppressor/defoamer based on Fatty Alcohol(C12-C14 and C12-C18) and/or partial ester, forms thickening glue easily, promptly can not free-pouring again colloid.Therefore, should particularly add limited amount ethanol and guarantee flowability and pourability, even at room temperature in the first to file suggestion by adding limited amount low-grade monobasic alcohol.These mixtures have also been carried out identical interpolation in the present invention in to their use.Preferred low-grade monobasic alcohol is to contain the nearly respective compound of 4 carbon atoms.
In an important embodiment, instruction of the present invention is characterised in that except the composition of above-mentioned multicomponent mixture, low-grade monobasic alcohol particularly at room temperature can be used as mixing element by the mobile lower polyol.So these polyvalent alcohols in the multicomponent mixture also have multi-functional.As the liquid mixing composition with relative higher, they have promoted particularly when the part of the concentrated solution of handling the needed flowable of concentrated solution and therefore bringing; On the other hand, after these compositions-in being introduced in soil-with the form performance trophism of the extra carbon source of microorganism growth, at first napiform root and/the micorrhiza part.Preferred polyhydric alcohols is to contain 2-6 carbon atom, preferably contains respective compound, particularly glycerine and/or the ethylene glycol of 2-4 carbon atom.The high resolution of composition discussed here in water also is useful in the practical application of this multicomponent mixture.The preferred amounts of mixing element discussed here is generally 30-35wt% at the most, preferred 20-25wt% at the most, more preferably (weight percentage is based on the multicomponent mixture of above-mentioned concentrated solution form, and this concentrated solution dilutes to be administered on the soil to be processed through water at 5-15wt%.)
Except or substitute above-mentioned unsaturated fatty alcohol as the ingredients of a mixture, the undersaturated terpenol of olefinic also is suitable for as suds suppressor/defoamer.Terpenol be plant-derived, contain the acyclic of 10-40 carbon atom or a ring, dicyclo or three rings, polyenoid belongs to unsaturated alcohol.Terpenol preferably uses as suds suppressor/defoamer with the form of their naturally occurring mixtures.Particularly preferred representative is a pine tar, and it is multiple terpinol such as α-and the mixture of β-terpinol, α-envelope alcohol, borneol and iso-borneol, as the Chemielexikon of Rompp, and 3451 pages, the 4th volume, 1991, the 9th edition was described.In addition, pine tar also contains a spot of other non-alkylol cpds, for example camphor, methyl allylphenol and estragole.Pine tar is from stub of the various conifers that contain resin and root wood, by with for example petroleum solvent or chloroform extraction, obtains with aftercut and distillation.
As mentioned above, on the basis of activeconstituents, antifoaming constituent exists with the content littler than APG composition usually.The consumption of antifoaming constituent obviously little mixture is preferred.So antifoam content is about 10-25wt%, preferably the multicomponent concentrated solution of about 15-20wt% is to the objective of the invention is to suit.
According to the kind and the content of above-mentioned main component, the low grade water-soluble monohydroxy-alcohol that is used as viscosity modifier is to determine by total amount of water in the rudimentary water-soluble polyol of selectivity use and the multicomponent mixture.At least about 5-7wt%, upper limit 12-25wt% is for suitable especially with lower limit for the addition of viscosity modifier.About 5-20wt%, more particularly, the ethanol of 10-15wt% adds usually can be to viscosity producing enough influences aspect the needed flowable of multicomponent mixture and the pourability, even at room temperature.
The generally about at the most 50wt% of the water content of multicomponent concentrated solution in preferred embodiments, can be lower value.Therefore the maximum value of the water content of multicomponent mixture is suitable especially for about 30-45wt%.Usually, the water content of multicomponent mixture will be well below this, 10-20wt% for example, preferred 10-15wt%.
In practice, the multicomponent mixture that contains tensio-active agent of the present invention is to be applied in the pending soil through water-reducible form, and amount of application is at least about 0.5-1g/m 2, preferably at least about 3-5g/m 2The multicomponent mixture that contains APG-based on anhydrous mixture-be introduced on the soil or in the soil.The preferred upper limit of the amount of application of multicomponent mixture based on anhydrous mixture, is 25-30g/m 2Although, bigger usage quantity is for example high to 40g/m 2, or even it is high to 50g/m 2, also be of the present invention main
Embodiment.
The multicomponent mixture that contains tensio-active agent of the present invention can especially be used once in growth season or several in 1 year.More particularly, the time of selecting to use multicomponent mixture of the present invention can be regulated on kind and amount according to the concrete grammar of the soil application that will use.Be understandable that on the basis of those of ordinary skill knowledge the nitrate that prevents not expect with auxiliary of the present invention is by flush away, can be subjected to can be by the influence of the amount of the nitrate of flush away under each particular case.Although still do not have the technology of the present invention effect based on clearly explanation, can probably suppose, under the influence of the surfactant based multicomponent mixture of introducing according to the present invention, carry out, the water-soluble nitrate composition works in the positive effect than the level in the superstructure is disperseed and immediately segmentation cloth is united expectation of soil.
Embodiment
Compare test, measure the wash-out characteristic of the aqueous solution relevant with the nitrate of flush away from anthropogenic soil under identical working conditions, the result of these tests reports in the following embodiments.
Use the water preparation of selling by Henkel KgaA, the registration name is called " Magic Wet " that is purchased product as oil of the present invention/water type APG compound.Magic Wet is the multicomponent mixture of the type of above-mentioned definition, contains the suds suppressor and viscosity modifier and the oil/water type surfactivity APG compound that are selected from Fatty Alcohol(C12-C14 and C12-C18) and fatty acid partial ester, and its form is a concentrated liquid.
In the simultaneous test of under other identical working conditions, carrying out, measure the wash-out characteristic of the moisture APG preparation of the different APG concentration relevant with the nitrate flush away.These tests compare as eluent with using the tap water that does not contain APG.
Carry out two further tests, on the one hand with a kind of water preparation of the liquid fertilizer that is purchased, on the other hand with identical aqueous liquid phase but additionally contain Magic Wet as moisture eluent.Used liquid fertilizer is Substral , it is characterized in that N: P 2O 5: K 2The ratio of O is 6: 4: 4.In test, liquid fertilizer is to use with the form of 3wt% water preparation.
Adopt following operating process:
In mortar that moist, the new farming loess system of introducing is even, and cross the 5mm sieve.From its nearest history, this loess contains nitrogen, particularly solubility nitrate.The dry weight of used loess is 86.5wt%.The moist loess of 50g is incorporated in the long glass guide channel (glass frits) of 10cm, and glass guide channel is vertically placed so that concrete testing liquid can drip into from the top or be poured on each glass guide channel.Every kind of eluant of accumulation is collected below glass guide channel.
Splash into from the top with the 1ml testing liquid, and 5ml water or multicomponent solutions are poured on each glass guide channel.In 5-10 minute time, the liquid infiltration of this volume is crossed and is absorbed by the soil in the glass guide channel.
Elution step is subsequently carried out like this, is poured on the head of the glass guide channel of wanting wash-out with 5ml water.Collect elutriant.Measure the amount of collected elutriant and the concentration of nitrate with mg/l.
Every group of test of following embodiment 1-6 repeated 3 times in the different time.Battery of tests determination test solution is administered in the soil in the glass guide channel and the liquid wash-out that carries out immediately after disperseing.Another group test was carried out after testing liquid is used and introduced in 7 days.At last, the 3rd group of test extends to 14 days with the time period that testing liquid is introduced in soil neutralization wash-out subsequently.Specifically:
Embodiment 1: blank test, with purified tap water as testing liquid.
Embodiment 2: use the 1.25wt%Magic Wet aqueous solution as testing liquid.
Embodiment 3: use the 2.5wt%Magic Wet aqueous solution as testing liquid.
Embodiment 4: use the 5.0wt%Magic Wet aqueous solution as testing liquid.
Embodiment 5: use the 3wt%Substral aqueous solution as testing liquid.
Embodiment 6: with containing the above-mentioned Substral aqueous solution of 1.25wt%Magic Wet as testing liquid.
In embodiment 1-4, in soil pattern to be measured, do not introduce extra nitrogen, add 9mg nitrogen in every 50g soil in above-mentioned 5 and 6.
In first is measured, after 0 day, 7 days and 14 days, decide the wash-out characteristic with the ml instrumentation, obtain following result: table 1
Embodiment Elution volume (ml)
After 0 day After 7 days After 14 days
????1 ????5 ????3.3 ????3.0
????2 ????6.5 ????2.3 ????2.1
????3 ????6.5 ????2.0 ????3.1
????4 ????6.5 ????2.4 ????2.4
????5 ????6.0 ????3.0 ????2.8
????6 ????6.5 ????2.1 ????2.2
But the volume of water of measuring wash-out after using testing liquid immediately is the water-holding power of soil, and comparison is than embodiment 1 part omitted height, this DeGrain after 7 days and 14 days in embodiment 2-6.
In the elutriant that table 1 data obtain, the nitrate amount of assay determination effective flush away of quilt under each situation.Below table 2 summed up result with table 1 identical sequence.Table 2
Embodiment The nitrate content of measuring (mg)
Wash-out after 0 day Wash-out after 7 days Wash-out after 14 days
????1 ????0.2 ????0.132 ????0.21
????2 ????0.065 ????0.03 ????0.95
????3 ????0.013 ????0.012 ????0.028
????4 ????0.013 ????0.012 ????0.02
????5 ????13.5 ????6.513 ????7.08
????6 ????12.35 ????4.032 ????4.33
Result's contrast shows, has successfully reduced the amount of the nitrate of eluting water flush away by interpolation Magic Wet.For example, use the Magic Wet solution of 1.25wt%, flush away nitrate 0.2mg (after 0 day) in embodiment 1 control sample is dropped to 0.065mg, promptly arrives originally by 32% of the nitrate of flush away.By using more substantial Magic Wet, 2.5wt%Magic Wet solution for example, this effect even can further bring up to the nitrate 6.5% of original flush away.
By using the Magic Wet of wash-out liquid phase, (every 50g soil 9mg N is equivalent to 30.6mg NO with liquid fertilizer 3) the extra nitrogen introduced also has been retained in (referring to the data contrast of embodiment 5 and 6) in the soil largely.
Embodiment 7
Another test is lixiviate test, is used for investigating the ability that the nitrogen of various fertilizer discharges, and research mixture of the present invention is reducing nitrate by the effect aspect the flush away.For reaching this purpose, from the farmland, almost intactly take out soil block (post), and put into the 1 meter long densitometer that has the gravel layer of displacement of soil.This soil is light color soil (light soil) (sl=silty loam, sandy loam).Use two kinds of common granulated fertilizer (nitro-chalk and Floranid Master).Amount of application is per hectare 200kg purity nitrogen in both cases, and every kind of situation repeats for several times.By of the present invention mixture of the applicant, with 2g/m with " Magic Wet " name 2(20 kilograms/public affairs are inclined) used with the water of 10 times of amounts.Without the fertilising the earth pillar with natural nitrogen content with comparing.In the whole test, container is exposed in the natural weather.Diurnal temperature is respectively 15-25 ℃ and 14-18 ℃.When on-test, fertilizer and/or substances of the present invention are placed on the surface of earth pillar, water down then.Simulated rainfall 40mm weekly.After on-test 10,20,30 days collect draining and analyze the nitrate (flow injection analysis) in the draining and measure the average lixiviate amount of nitrate.
The draining of soil block/post of executing nitro-chalk is than the nitrate content of the draining of the soil block/post of executing Floranid Master and unmanured reference examples obviously high (table 3).
In any case, single administration the present invention " Magic Wet " mixture descends the level of the nitrate in the draining significantly.For example, soil block/post of using Floranid Master by the nitrate of flush away from 58mg NO 3/ L is reduced to 45mg NO 3/ L.Table 3
Nitrate in the draining (mg/L) No Magic Wet Magic Wet is arranged Be reduced to
The reference examples of not applying fertilizer ?44.2 ?25.6 ?58%
Floranid?Master ?58.6 ?45.2 ?77%
Nitro-chalk (Nitrochalk) ?64.8 ?52.1 ?80%
Substances is the agricultural soil of natural growth.Be stressed that mixture of the present invention can also be reduced on the farmland by the nitrate of flush away.On the one hand, this has protected underground water to avoid further azotate pollution; On the other hand, it remains on the fertilizer of costliness and cultivates plant roots, makes contributions to more effectively utilizing fertilizer.

Claims (19)

1, the purposes of the ecological safe surface active compound of the oil/water-soluble alkyl of water type (oligomeric) glycoside compound (APG compound) class, they are incorporated in the soil surface as auxiliary, in order to be controlled in the rain and/or the process of watering in plant root flush away nitrate from anthropogenic soil.
2, the purposes that requires of claim 1, it is characterized in that the APG compound with contain the N times inorganic and/or that organic fertilizer is identical and/or different and be introduced on the soil surface or soil inside.
3, the purposes that require of claim 1 and 2 is characterized in that the APG compound different and/or preferably be same as the time introducing that contains the C source that organically combines carbon, is used to promote the growth of soil microorganisms flora, more particularly strengthen corresponding microorganism species.
4, the purposes of claim 1-3 requirement is characterized in that the water preparation of APG compound and C source are introduced in the soil surface.
5, the purposes of claim 1-4 requirement is characterized in that the APG compound is saturated and/or the undersaturated hydrocarbon residue of olefinic with the lipophilic that contains lipid structure, can be incorporated in the soil together by organic compound aerobic and anaerobic degradation.
6, the purposes of claim 1-5 requirement is characterized in that the partial ester mixing that APG compound and Fatty Alcohol(C12-C14 and C12-C18) and/or lipid acid are become with lower polyol is administered in the soil, preferably uses with the form of water preparation.
7, the purposes of claim 1-6 requirement is characterized in that using the C based on saturated at least substantially 8-14The APG compound of overhead distillate Fatty Alcohol(C12-C14 and C12-C18) at least mainly contains C in the preferred APG molecular structure 8/10The APG compound of Fatty Alcohol(C12-C14 and C12-C18).
8, the purposes of claim 1-7 requirement is characterized in that oligomeric alkyl glucoside, and preferably its DP value is 1.2-5, and the HLB value is used as the APG compound for the oligomeric alkyl glucoside of 10-18.
9, the purposes of claim 1-8 requirement, it is characterized in that in the multicomponent mixture that contains the APG compound, using in the molecule and contain the Fatty Alcohol(C12-C14 and C12-C18) of 6-8 carbon atom at least, preferably contain 10-28 carbon atom, one and/or the polyenoid that more particularly contain 12-24 carbon atom belong to unsaturated fatty alcohol.
10, the purposes of claim 1-9 requirement is characterized in that using solidification range at 20 ℃ or lower, preferred 10-15 ℃ or lower Fatty Alcohol(C12-C14 and C12-C18).
11, the purposes of claim 1-10 requirement is characterized in that using in multicomponent mixture and contains 2-6 carbon atom, the fatty acid partial ester of the polyvalent alcohol of preferred 3-5 carbon atom, more particularly glycerol partial ester.
12, the purposes of claim 1-11 requirement is characterized in that fatty acid partial ester is derived from C 10-24, more particularly derived from C 12-20Lipid acid, a preferred thiazolinyl and/or polyenoid belong to unsaturated fatty acids.
13, the purposes of claim 1-12 requirement is characterized in that using the unsaturated C of glycerine and olefinic 16/18The partial ester that monocarboxylic acid became, more particularly Rylo MG 19.
14, the purposes of claim 1-13 requirement is characterized in that Fatty Alcohol(C12-C14 and C12-C18) and partial ester and preferred APG compound also are based on crude substance.
15, the purposes that requires of claim 1-14 is characterized in that their ratio of mixture (weight part of no water constituent) is 1: 1-1: 10, preferred 1: 1-1 when Fatty Alcohol(C12-C14 and C12-C18) and fatty acid partial ester use simultaneously: 5, more preferably 1: 1-1: 3.
16, the purposes of claim 1-15 requirement, it is characterized in that the APG compound uses with the weight that equates at least substantially with Fatty Alcohol(C12-C14 and C12-C18) and/or partial ester, preferred ratio of mixture is APG: Fatty Alcohol(C12-C14 and C12-C18) and/or partial ester are 1: 1-5: 1, preferred 1: 1-3: 1, more preferably 1.5-2.5: the 1-weight part, based on the anhydrous mixture composition.
17, the purposes that requires of claim 1-16 is characterized in that adding in multicomponent mixture and has preferably contained 2-6 the carbon atom and the more preferably lower polyol of 2-4 carbon atom, more specifically is glycerine and/or ethylene glycol.
18, the purposes of claim 1-17 requirement, it is characterized in that using dilution water preparation as additional viscosity modifier, this water preparation be from flowable, contain rudimentary single hydroxyl alcohol, preferably this alcohol contains 1-4 carbon atom, more particularly the concentrated solution of alcoholic acid multicomponent mixture obtains.
19, the purposes of claim 1-18 requirement is characterized in that preferred by spraying aqueous emulsion/dispersion, with 1-50g/m 2, preferred 3-40g/m 2Amount, in anhydrous mixture, use the multicomponent mixture that contains APG.
CN99808365A 1998-07-10 1999-07-01 Reduction of nitrate leaching from cultivated soils Pending CN1308595A (en)

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CN102574748A (en) * 2009-08-06 2012-07-11 罗特哈姆斯太德研究有限公司 A method of reducing nitrate leaching from soil
CN111315712A (en) * 2017-11-06 2020-06-19 罗地亚经营管理公司 Fertilizer composition

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WO2014169175A1 (en) * 2013-04-12 2014-10-16 Metbro Distributing L.P. Soil metabolizable cyanamide pesticide compositions
EP3374330A4 (en) 2015-11-09 2019-05-01 Metbro Distributing L.P. Pre-plant biocide uses of aqueous cyanamides

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AU2423192A (en) * 1991-08-02 1993-03-02 Ronald Peter Hansen Solution for watering plant roots
US5385750A (en) * 1992-05-14 1995-01-31 Henkel Corporation Alkyl glycoside compositions with improved wetting properties
US5356861A (en) * 1993-11-19 1994-10-18 Cenex/Land O'lakes Agronomy Company Homogenous herbicidal adjuvant blend comprising glyphosate, ammonium sulfate, and alkyl polysaccharide
US5770543A (en) * 1996-09-06 1998-06-23 Henkel Corporation Agricultural compositions comprising alkyl polyglycosides and fatty acids
DE69814831T2 (en) * 1997-03-07 2003-12-24 Aquatrols Holding Co COMPATIBLE WATER-SOLUBLE TENSIDE-IMPREGNATED FERTILIZER CONCENTRATE AND USE
DE19748884A1 (en) * 1997-11-06 1999-05-20 Henkel Kgaa Flowable multi-component mixtures to promote the growth of the soil microorganism flora and their application

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102574748A (en) * 2009-08-06 2012-07-11 罗特哈姆斯太德研究有限公司 A method of reducing nitrate leaching from soil
CN102574748B (en) * 2009-08-06 2015-05-13 罗特哈姆斯太德研究有限公司 A method of reducing nitrate leaching from soil
CN111315712A (en) * 2017-11-06 2020-06-19 罗地亚经营管理公司 Fertilizer composition

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