CN102603417A - Xyloglucan enveloped water-retention slow release fertilizer - Google Patents
Xyloglucan enveloped water-retention slow release fertilizer Download PDFInfo
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- CN102603417A CN102603417A CN201210090652XA CN201210090652A CN102603417A CN 102603417 A CN102603417 A CN 102603417A CN 201210090652X A CN201210090652X A CN 201210090652XA CN 201210090652 A CN201210090652 A CN 201210090652A CN 102603417 A CN102603417 A CN 102603417A
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Abstract
The invention discloses a xyloglucan enveloped water-retention slow release fertilizer and relates to the technical field of the slow release fertilizer. The xyloglucan enveloped water-retention slow release fertilizer consists of fertilizer particles and water-retention slow release layers wrapped at the surfaces of the fertilizer particles, wherein the forming material of the water-retention slow release layers is xyloglucan. The macromolecule three-dimensional gel reticular structure formed by pure natural plant polysaccharide is used for building a slow release system, so the xyloglucan enveloped water-retention slow release fertilizer integrating the water retention and the slow release is obtained, and the xyloglucan enveloped water-retention slow release fertilizer has the advantages that the water absorption and water retention performance is very high, the nutrient loss is low, nontoxicity, biological adaptability, biological degradability and environment-friendly effects are realized, and the like.
Description
Technical field
The present invention relates to the slow-release fertilizer technical field, particularly relate to a kind of water-holding slow-release fertilizer that coats chemical fertilizer with xyloglucan.
Background technology
China is a large agricultural country, and the growth quality of farm crop depends primarily on the fertilizer and the water of use, therefore improves the two utilization ratio and can effectivelyly improve the growing state of farm crop.Yet the common fertilizer of selling in the market in use has 40 ~ 70% nitrogen, 80 ~ 90% phosphorus, 50 ~ 70% potassium with soil erosion, and does not have effective function in by on the farm crop of applying fertilizer, and this is far below world developed country level.Under the not high situation of productive rate, plantation person tends to increase the consumption of fertilizer.So not only may have side effects, also can cause enormous economic loss, more can cause serious environmental to pollute plant.
Simultaneously, drought and water shortage is to hinder China's agricultural development and accelerate one of important factor of Desertification.Though agricultural water-loss reducer now has very strong water absorbing and retaining properties, do not have the necessary nutrient of crop growth.Though and that existing on the market sustained-controll-release fertiliser has working lipe is long, utilization ratio is high, and nutrient loss is few, and advantages of environment protection does not have strong water absorbing and retaining properties.If water-holding agent and sustained-controll-release fertiliser are used in respectively on the farm crop, both inconvenient, cost also can increase, and both consistencies possibly not reach the ideal effect yet.
Therefore, the development that integrates the water-holding slow-release fertilizer of water conservation and slow controlled release will become the main development trend of the future of agriculture fertilizer.It can be a large amount of absorption moisture, keep moisture, can also reduce nutrient loss, improved fertilizer utilization ratio greatly, yield of farm crop and quality are improved.
Summary of the invention
The object of the invention overcomes the deficiency of prior art, and a kind of wooden glucose coating water-holding slow-release fertilizer that integrates water conservation and slow controlled release is provided.
Xyloglucan coating water-holding slow-release of the present invention is fertile, is made up of chemical fertilizer granule and the water-holding slow-release layer that is wrapped in said chemical fertilizer granule surface, and the material of said formation water-holding slow-release layer is an xyloglucan.
Described chemical fertilizer granule can comprise any one fertilizer in the nitrogen phosphorus potassium, also can be wherein any two or three composite fertilizer.
Described xyloglucan as the water-holding slow-release layer, with said granular chemical fertilizer weight part ratio be 0.5-30:70-99.5; Be preferably 2-15:85-98.
Also can add the crosslinked xyloglucan of linking agent in the said water-holding slow-release layer in right amount to reach different slow release effects, its consumption is the 0-20% of the total consumption of xyloglucan, preferred 0.1-10%; Said linking agent is one or more the mixture in epoxy chloropropane, formaldehyde, POCl3, Trisodium trimetaphosphate, tripoly phosphate sodium STPP, the Sodium hexametaphosphate 99.
The preparation method that xyloglucan coating water-holding slow-release of the present invention is fertile:
Method one:
(1) chemical fertilizer granule of in tablets press, putting into; Spray into atomized water with particle surface wetting after; The xyloglucan powder is joined in the tablets press; Make xyloglucan be wrapped in the fertiliser granulates surface, also can spray into linking agent (can be Trisodium trimetaphosphate) xyloglucan is carried out crosslinked, the xyloglucan as fertilizer sources water-holding slow-release layer after crosslinked;
(2) after the fertiliser granulates drying that coating is accomplished, be finished product.
Method two:
(1) with xyloglucan solution spraying chemical fertilizer granule, also can spray into linking agent (can be Trisodium trimetaphosphate) xyloglucan is carried out crosslinked, the xyloglucan as fertilizer sources water-holding slow-release layer after crosslinked;
(2) after the fertiliser granulates drying that coating is accomplished, be finished product.
The present invention is with the pure natural plants polysaccharide---and the polymer three-dimensional gel networks that xyloglucan forms makes up slow-releasing system; Thereby it is fertile to obtain a kind of coating water-holding slow-release, and it has, and very strong water absorbing and retaining properties, nutrient loss are few, nontoxic, biological fitness, biodegradable, advantages of environment protection.
The test result of the sustained release performance in soil shows that this product was no more than 75% in the time of the 28th day, and the conform european standard council (CEN) shows that to the slowly-releasing standard of slow release fertilizer it has the good slow release performance.
After product of the present invention gets into soil, not only can improve the water-retaining capacity of soil, also have water retention capacity preferably simultaneously; Can slow down the evaporation of moisture in the soil; Slowly discharge the moisture of being stored, it is fully absorbed by farm crop, promote crop growth; Effectively improve the utilization ratio of water resources, application promise in clinical practice is arranged in arid, lack of water or the big area of daily evaporation amount.Simultaneously, nutrient is slowly discharged, has been reduced fertilizer loss and the farm crop nutrient deficiency of bringing because of single-dose application along with the release of moisture.Coating water-holding slow-release fertilizer in the soil after the swelling resembles a miniature reservoir that keeps moisture and nutrient, can improve the utilization ratio of moisture and nutrient simultaneously.And execute the loaded down with trivial details operation that water-holding agent, slow release fertilizer bring before having reduced respectively, reduced planting cost, reduced the consumption of manpower.Product of the present invention has better biocompatibility, biodegradability, belongs to environmental friendly fertilizer, is beneficial to sustainable development of resource.
Description of drawings
Fig. 1 is the water retention property of xyloglucan coating water-holding slow-release fertilizer of the present invention in soil;
Fig. 2 is xyloglucan coating water-holding slow-release fertilizer of the present invention (◆) and the slowly-releasing of common urea (▲) in soil.
Embodiment
(the kind raw material umber of embodiment is a weight part)
Embodiment 1: preparation xyloglucan coating water-holding slow-release fertilizer
In granulating disc, put into the urea granules that 90 parts of diameters are about 2mm; Spray into atomized water with urea surface wetting after, the xyloglucan powder of 10 parts of mistake 110 mesh sieves is joined in the granulating disc, and sprays into 0.5 part of Trisodium trimetaphosphate and xyloglucan mixes; With crosslinked xyloglucan; The coating that rolls makes to be wrapped on the fertilizer kernel as fertilizer sources water-holding slow-release layer.Room temperature is dried then, promptly obtains urea-containing coating water-holding slow-release fertilizer finished product.
Absorption salt ratio (W
a) mensuration: accurately take by weighing 1 the gram xyloglucan coating water-holding slow-release fertilizer (specimen in use is above-mentioned 1 gained); Put into the brinish beaker that is added with 250mL 0.9%; Soak after 90 minutes under the room temperature and filter with self-control nylon wire (aperture 0.076mm); And left standstill on the net 5 minutes, to take off and weigh, note is made M
i, water-intake rate is pressed W
a=W
i-1 calculates.Sample is inhaled 10 times of salt solution under normal pressure.
The maximum measurement of water-content coefficient of soil: get 5 gram xyloglucan coating water-holding slow-release fertilizer (specimen in use is above-mentioned 1 gained) and mix with 495 gram dry ground (crossing 26 mesh sieves); Diameter 4.5cm then packs into; The bottom is surrounded by in the pvc pipe of gauze (aperture 0.076mm), and weighs and be designated as W
dTo manage unsettled the pouring gradually from top, till the bottom has water to ooze out, leave standstill, and treat to weigh when no longer oozing out, be designated as W into tap water
wDo control experiment (do not add xyloglucan coating water-holding slow-release fertilizer, all the other conditions are with above-mentioned) simultaneously.The maximum water ratio of soil is designated as W%, is calculated as follows: W=[(W
w-W
d)/(W
w-W
d+ 500)] * 100%.
Experiment shows that the maximum water ratio that does not add the soil of xyloglucan coating water-holding slow-release fertilizer is 30.2%, and the maximum water ratio of soil is 40.5% behind the adding xyloglucan coating water-holding slow-release fertilizer, improves about 10.3%.This shows that prepared fertilizer has water absorbing properties preferably in soil, can obviously improve soil moisture content, effective storing rainwater or irrigation water, thus improving water utilization rate, this is its big advantage of comparing with general slow release fertilizer.
Soil water-retaining property mensuration: get in the 1000mL beaker of packing into after 5 gram xyloglucan coating water-holding slow-release fertilizer (specimen in use is above-mentioned 1 gained) mix with 495 gram dry ground (crossing 26 mesh sieves), add 500 gram tap water.Weigh, and, whenever weighed once, be designated as W at a distance from 5 days in the room temperature held
i, day-night observation 30 days.Do control experiment (do not add xyloglucan coating water-holding slow-release fertilizer, all the other conditions are with above-mentioned) simultaneously.Moisture retention (being designated as W%) is calculated as follows: W=[(W
i-500)/500] * 100%
Through test, the water retention property of soil that adds xyloglucan coating water-holding slow-release fertilizer is better than the water-retentivity of the soil that does not add.After 30 days, the soil moisture content that contains xyloglucan coating water-holding slow-release fertilizer exceeds about 30% than what do not add.Explain after prepared xyloglucan coating water-holding slow-release fertilizer adds soil and not only have water-retaining capacity preferably; And has water retention capacity preferably; Can slow down the evaporation of moisture in the soil, slowly discharge the moisture of being stored, it is fully absorbed by crop; Effectively improve the utilization ratio of water resources, application promise in clinical practice is arranged in arid, lack of water or the big area of daily evaporation amount.
Slow-releasing is measured: get and put into the 500ml beaker after 1 gram xyloglucan coating water-holding slow-release fertilizer (specimen in use is above-mentioned 1 gained) mixes with 180 gram dry ground (crossing 26 mesh sieves), add 120 gram tap water, parallelly do 8 experiments (keeping in the various kinds water-content constant through adding zero(ppm) water in the experimentation); Respectively at 1,2,5; 10,15,20; Got one in 25,30 days, with 0.01MCaCl
2Nitrogen content is surveyed in the solution lixiviate.Do a blank and a control samples simultaneously, wherein do not add fertilizer in the blank, add urea in control samples without any processing with nitrogen content such as 1 gram xyloglucan coating water-holding slow-release fertilizer.Nitrogen content is measured with the Kelvin cooking method that disappears in the various kinds.Calculate the release ratio.
Learn that through test urea surpasses 95% at its nutrient release amount on the same day that adds soil.And xyloglucan coating water-holding slow-release fertilizer is in the time of the 2nd, 5 and 30 day; The burst size difference 8.7,16.8 and 69.1% of nitrogen; The conform european standard council (CEN) required the 28th day to be no more than 75% slowly-releasing standard to slow release fertilizer, showed that it has the good slow release performance.
Claims (4)
1. an xyloglucan coating water-holding slow-release is fertile, is made up of chemical fertilizer granule and the water-holding slow-release layer that is wrapped in said chemical fertilizer granule surface, and it is characterized in that: the material of said formation water-holding slow-release layer is an xyloglucan.
2. xyloglucan coating water-holding slow-release according to claim 1 is fertile, and it is characterized in that: described chemical fertilizer granule can comprise any one fertilizer in the nitrogen phosphorus potassium, also can be wherein any two or three composite fertilizer.
3. xyloglucan coating water-holding slow-release according to claim 1 is fertile, it is characterized in that: described xyloglucan as the water-holding slow-release layer, with said granular chemical fertilizer weight part ratio be 0.5-30:70-99.5; Be preferably 2-15:85-98.
4. xyloglucan coating water-holding slow-release according to claim 1 is fertile; It is characterized in that: also be added with the crosslinked xyloglucan of linking agent in the said water-holding slow-release layer to reach different slow release effects; Its consumption is the 0-20% of the total consumption of xyloglucan, preferred 0.1-10%; Said linking agent is one or more the mixture in epoxy chloropropane, formaldehyde, POCl3, Trisodium trimetaphosphate, tripoly phosphate sodium STPP, the Sodium hexametaphosphate 99.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210090652XA CN102603417A (en) | 2012-03-31 | 2012-03-31 | Xyloglucan enveloped water-retention slow release fertilizer |
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| CN201210090652XA CN102603417A (en) | 2012-03-31 | 2012-03-31 | Xyloglucan enveloped water-retention slow release fertilizer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463637A (en) * | 2013-08-28 | 2013-12-25 | 天津爱勒易医药材料有限公司 | Novel sustained-release medicine solid preparation framework material |
| CN105143400A (en) * | 2012-10-09 | 2015-12-09 | 韩国科学技术院 | Soil stabilization and improvement method using biopolymers |
| CN109665893A (en) * | 2019-02-25 | 2019-04-23 | 南京工业大学 | Slow-release synergistic compound fertilizer |
| CN112279716A (en) * | 2020-10-21 | 2021-01-29 | 彭玲玲 | Environment-friendly compound fertilizer with slow release function and preparation method thereof |
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| US7112555B1 (en) * | 1999-06-25 | 2006-09-26 | Centre National De La Recherche Scientifique | Use of glycuronic polysaccharides and oligosaccharides as phytosanitary products and/or fertiliser |
| CN101708293A (en) * | 2009-12-18 | 2010-05-19 | 华中师范大学 | Anti-parasite slow-release oral agent for veterinary |
| CN102351606A (en) * | 2011-09-17 | 2012-02-15 | 山东喜丰田生态肥业有限公司 | Environment-friendly coated fertilizer and preparation method thereof |
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2012
- 2012-03-31 CN CN201210090652XA patent/CN102603417A/en active Pending
Patent Citations (4)
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| US7112555B1 (en) * | 1999-06-25 | 2006-09-26 | Centre National De La Recherche Scientifique | Use of glycuronic polysaccharides and oligosaccharides as phytosanitary products and/or fertiliser |
| CN1528717A (en) * | 2003-10-16 | 2004-09-15 | 华东理工大学 | Coating agent for slow release fertilizer |
| CN101708293A (en) * | 2009-12-18 | 2010-05-19 | 华中师范大学 | Anti-parasite slow-release oral agent for veterinary |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105143400A (en) * | 2012-10-09 | 2015-12-09 | 韩国科学技术院 | Soil stabilization and improvement method using biopolymers |
| US9944855B2 (en) | 2012-10-09 | 2018-04-17 | Korea Advanced Institute Of Science And Technology | Soil stabilization and improvement method using biopolymer |
| CN103463637A (en) * | 2013-08-28 | 2013-12-25 | 天津爱勒易医药材料有限公司 | Novel sustained-release medicine solid preparation framework material |
| CN109665893A (en) * | 2019-02-25 | 2019-04-23 | 南京工业大学 | Slow-release synergistic compound fertilizer |
| CN112279716A (en) * | 2020-10-21 | 2021-01-29 | 彭玲玲 | Environment-friendly compound fertilizer with slow release function and preparation method thereof |
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Application publication date: 20120725 |