CN104072306B - A kind of stable form fertilizer rich in selenium and preparation method thereof - Google Patents
A kind of stable form fertilizer rich in selenium and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to crop fertilizer field, particularly a kind of stable form fertilizer rich in selenium and preparation method thereof.A kind of stable form fertilizer rich in selenium, its raw material comprises: containing selenium material, amino acids material, soil synergistic matter, stable form material and coating substance; Be 1:1 ~ 10:20 ~ 50:100 ~ 200 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material, coating substance adds by the mixture after every kilogram of granulation the coating solution that 3 ~ 5ml concentration is 3 ~ 5%.Stable form fertilizer rich in selenium provided by the invention, from slow, anti-fixing, short absorption angularly, after using this stable form fertilizer rich in selenium, crop selenium rich ability significantly strengthens, output significantly improves.Present invention also offers the preparation method of this stable form fertilizer rich in selenium, preparation method is simple, and obtained stable form fertilizer rich in selenium is used rear effective.
Description
Technical field
The present invention relates to crop fertilizer field, in particular to a kind of stable form fertilizer rich in selenium and preparation method thereof.
Background technology
Selenium is the necessary nutritive element of human body, scarce selenium can cause the various diseases such as Kaschin-Beck disease, Keshan disease, take in appropriate selenium and not only can maintain normal physiological metabolism, prevent selenium deficiency disease from occurring, can also anti-ageing, decorporation is malicious, improve immunity of organisms and preventing cardiovascular disease and cancer etc.
There is notable difference in the validity of different shape selenium to human body, wherein inorganic states selenium absorption rate is poor, and Organic Selenium is easily absorbed by the body.At present, the main source that most people obtains selenium is food crop, the average daily selenium intake of people that international NI is recommended is 60 ~ 75 μ g, the average daily selenium intake of Chinese people is only 28 ~ 40 μ g, the situation that human body lacks selenium is comparatively general, and its major cause is that China about has the soil of 2/3 to there is the situation of scarce selenium.
In order to improve crop selenium content, can by executing the absorption of selenium measure strengthening Selenium By The Plants, but the narrow range that selenium is useful and harmful to plant, executes selenium and too much can injure plant and cause the underproduction, executes selenium deficiency and does not reach again production selenium-rich crops object; Although foliage-spray selenium is easily absorbed, exist mainly with inorganic states in plant materials, be not easily absorbed by the body utilization, and easily produce toxic action to plant; Though be conducive to production by soil spraying selenium to be rich in organoselenium crop, but selenium is easily by soil fixing, especially easily fix by iron and manganese oxides in acid soil.Therefore, be badly in need of a kind of fertilizer rich in selenium of exploitation, not only can reduce soil fixing selenium, and the fertile toxic action that plant is produced of disposable employed a large amount of selenium can also be prevented, also ensure that plant materials reaches the object of rich selenium simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of stable form fertilizer rich in selenium and preparation method thereof, to solve the above problems.
Provide a kind of stable form fertilizer rich in selenium in an embodiment of the present invention, its raw material comprises: containing selenium material, amino acids material, soil synergistic matter, stable form material and coating substance;
Wherein, be 1:1 ~ 10:20 ~ 50:100 ~ 200 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material, coating substance adds by the mixture after every kilogram of granulation the coating solution that 3 ~ 5ml concentration is 3 ~ 5%.
The stable form fertilizer rich in selenium that the embodiment of the present invention provides, its raw material comprises: containing selenium material, amino acids material, soil synergistic matter, stable form material and coating substance, the stable form fertilizer rich in selenium obtained by certain proportioning has extraordinary slow releasing function, reduces the toxic action of selenium to plant.Because selenium discharges slowly, therefore, solve and once execute the toxic action that selenium produces plant and the problem executing the rich selenium deficiency of too low the caused plant of selenium amount in a large number; Be incorporated into selenium in slow material not easily by soil fixing, improve the utilization ratio of selenium fertilizer, reduce selenium and the potentiality of soil is polluted.
More preferably, be 1:4 ~ 7:30 ~ 40:140 ~ 160 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material, coating substance adds by the mixture after every kilogram of granulation the coating solution that 3 ~ 5mL concentration is 3 ~ 5%.
Empirical tests, selects Sodium Selenite, sodium selenate, selenium mineral powder, amino acid selenium as the source of selenium, and the selenium that root system of plant absorbs easily shifts to overground part and assimilates into organoselenium.Preferably, described containing selenium material comprise Sodium Selenite, sodium selenate, selenium mineral powder, amino acid selenium one or more.Wherein, amino acid selenium comprises selenomethionine, seleno-cysteine and other commercially available kind amino acid seleniums.
Empirical tests, methionine(Met), halfcystine, polyglutamic acid add in the formula of stable form fertilizer rich in selenium provided by the invention, and these amino acids substances effectively provide organic carbon source, and the selenite radical facilitating Root Absorption shifts to overground part.Preferably, described amino acids material comprise methionine(Met), halfcystine, polyglutamic acid one or more.
Empirical tests, the alkaline synergistic matter such as white lime, lime powder and other change acid substance as soil synergistic matter for soil, improve fertiliser granulates periphery micro-region soil pH value, greatly improve the validity of selenium in soil.Preferably, described soil synergistic matter be white lime, lime powder and other change one or more of acid substance for soil.Wherein, other changes acid substance for soil and comprises ground dolomite (crystalline calcium carbonate magnesium compound), phosphogypsum, flyash, plant ash etc.
Empirical tests, humic acid, xanthohumic acid, as stable form material, not only can promote plant establishment, and selenium can also be prevented by soil fixing, and then facilitate the absorption of root system to selenium; Humic acid, xanthohumic acid and biomass carbon and granulation filler zeolite powder is used in combination has good slow releasing function to selenium, slow releasing low dosage selenium can promote the growth of plant, improves the Assimilation rate of Selenium By The Plants.Preferably, described stable form material comprise humic acid, xanthohumic acid, biomass carbon one or more.
Preferably, described coating bonding material comprise carboxymethyl cellulose, water glass one or more.Adopt this coating bonding material, coordinate with other materials in formula, have extraordinary slow release effect, its slow releasing function is suitable, well meets the demand of plant growth.
Present invention also offers the preparation method of aforementioned stable type fertilizer rich in selenium, powder will be ground into respectively containing selenium material, amino acids material, soil synergistic matter, stable form material, granulation after mixing, drying is also sieved, the fertiliser granulates particle diameter obtained is 2 ~ 4mm, then coating solution is sprayed, after drying and get final product.Preparation method is simple, and the stable form fertilizer rich in selenium application effect obtained is good.
Preferably, spray coating solution to carry out in coating machine.Use machinery to realize spray effect, save manpower, and spraying effect is homogeneous, the product quality obtained is homogeneous, and effect has good stability.
A kind of stable form fertilizer rich in selenium that the embodiment of the present invention provides, from slow, anti-fixing, short absorption angularly, the effect of novel selenium-enriched stable form fertilizer on production selenium-rich crops of taking as the leading factor with selenium has been shown by test, after using stable form fertilizer rich in selenium provided by the invention, crop selenium rich ability significantly strengthens, output significantly improves.Present invention also offers the preparation method of this stable form fertilizer rich in selenium, preparation method is simple, and obtained stable form fertilizer rich in selenium is used rear effective.
Embodiment
Below by specific embodiment, the present invention is described in further detail.
Embodiment 1
Take Sodium Selenite 44g (pure selenium 20g), methionine(Met) 20g, white lime 400g, xanthohumic acid 2.0kg, zeolite powder 198kg; pulverize and sieve; granulation in tablets press; drying is also sieved; the fertiliser granulates particle diameter obtained is 2 ~ 4mm; then in coating machine, spray the cmc soln of 0.6L5%, stirring and evenly mixing 4 minutes, after drying, namely obtained the present invention contains the stable form fertilizer rich in selenium of selenium 0.01%.
Wherein, be 1:1:20:100 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material.
Embodiment 2
Take Sodium Selenite 420g (pure selenium 192g), selenomethionine 25.0g (pure selenium 10g), Cys2 .0kg, white lime 10.1kg, humic acid 40.4kg; zeolite powder 147kg pulverizes and sieves; granulation in tablets press; drying is also sieved; the fertiliser granulates particle diameter obtained is 2 ~ 4mm; then in coating machine, spray the cmc soln of 1L3%, stirring and evenly mixing 4 minutes, after drying, namely obtained the present invention contains the stable form fertilizer rich in selenium of selenium 0.1%.
Wherein, be 1:10:50:200 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material.
Embodiment 3
Take Sodium Selenite 22g (pure selenium 10.0g), sodium selenate 24g (pure selenium 10.0g), selenomethionine 20g (pure selenium 8.05g), halfcystine 62.2g, polyglutamic acid 50g, phosphogypsum 500g, flyash 341.5g, humic acid 2.0kg, xanthohumic acid 1.0kg, biomass carbon 0.93kg, zeolite powder 195kg, pulverize and sieve, granulation in tablets press, drying is also sieved, the fertiliser granulates particle diameter obtained is 2 ~ 4mm, then in coating machine, spray the sodium silicate solution of 0.8L4%, stirring and evenly mixing 4 minutes, after drying, namely obtained the present invention contains selenium 0.01% stable form fertilizer rich in selenium.
Wherein, be 1:4:30:140 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material.
Embodiment 4
Take seleno-cysteine 20g (pure selenium 8.7g), sodium selenate 457.8g (pure selenium 191.3g), polyglutamic acid 1.4kg, white lime 6kg, plant ash 2kg, humic acid 30kg, biomass carbon 2kg, zeolite powder 158kg; pulverize and sieve; granulation in tablets press; drying is also sieved; the fertiliser granulates particle diameter obtained is 2 ~ 4mm; then in coating machine, spray the cmc soln of 0.8L4%; stirring and evenly mixing 4 minutes, the present invention namely made after drying is containing the stable form fertilizer rich in selenium of selenium 0.1%.
Wherein, be 1:7:40:160 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material.
The zeolite added in embodiment 1-4, for making filler in material grain, as the material regulating nutrient content, also has adsorptivity simultaneously, has the effect of slowly-releasing nutrient.
Stable form fertilizer rich in selenium obtained for embodiment 1-4 is carried out rice field trial, simultaneously with common selenium fertile and not containing selenium fertilizer in contrast, all use as base manure, fertilising also comprises macroelement, and its consumption is respectively N150kg/ hectare, P
2o
545kg/ hectare, K
2o130kg/ hectare.After rice harvesting, output and the selenium content measured in rice of paddy rice of weighing, result is as shown in table 1.
Table 1 rice field trial result
As can be seen from Table 1, after using the obtained stable form fertilizer rich in selenium of the embodiment of the present invention, the output of paddy rice is improved, and the selenium content in paddy rice is also increased dramatically.
In addition, verify the selenium content used, empirical tests finds, using pure selenium amount is that 50 ~ 200g/ public affairs song is for good.
Stable form fertilizer rich in selenium provided by the invention, all be converted into the available organic form selenium of human body according to the selenium major part of plant absorption and prepare, stable form fertilizer rich in selenium also has promoter action to root growth, and then enhance the absorption of root system to selenium, be incorporated into simultaneously selenium in stability material not easily fix by soil, reduce many batches and execute the pollution of selenium to environment, improve the fertile utilization ratio of selenium.In addition, stable form fertilizer rich in selenium provided by the invention can be used alone, also can factorial praluction, makes the fertile and Special Fertilizers for Various Crops of rich selenium type slow-release or control-release fertilizer, BB etc. and put goods on the market together with nitrogen, phosphorus, potash fertilizer.When using separately, it is 50 ~ 200g that per hectare uses pure selenium.In fertiliser production, the concentration of stable form fertilizer rich in selenium can adjust according to actual needs, with easy to use.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a stable form fertilizer rich in selenium, is characterized in that, its raw material comprises: containing selenium material, amino acids material, soil synergistic matter, stable form material and coating substance;
Wherein, be 1:1 ~ 10:20 ~ 50:100 ~ 200 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material, coating substance adds by the mixture after every kilogram of granulation the coating solution that 3 ~ 5ml concentration is 3 ~ 5%;
Described amino acids material comprise methionine(Met), halfcystine, polyglutamic acid one or more;
Described coating substance comprise carboxymethyl cellulose, water glass one or more;
Described soil synergistic matter is one or more in white lime, lime powder, ground dolomite, phosphogypsum, flyash, plant ash;
Described stable form material be humic acid, xanthohumic acid, biomass carbon one or more.
2. stable form fertilizer rich in selenium according to claim 1, it is characterized in that, be 1:4 ~ 7:30 ~ 40:140 ~ 160 containing the quality proportioning of pure selenium, amino acids material, soil synergistic matter, stable form material in selenium material, coating substance adds by the mixture after every kilogram of granulation the coating solution that 3 ~ 5mL concentration is 3 ~ 5%.
3. stable form fertilizer rich in selenium according to claim 1, is characterized in that, described containing selenium material comprise Sodium Selenite, sodium selenate, selenium mineral powder, amino acid selenium one or more.
4. the preparation method of the stable form fertilizer rich in selenium described in any one of claim 1-3, it is characterized in that, powder will be ground into respectively containing selenium material, amino acids material, soil synergistic matter, stable form material, granulation after mixing, drying is also sieved, the fertiliser granulates particle diameter obtained is 2 ~ 4mm, then sprays coating solution, after drying and get final product.
5. the preparation method of stable form fertilizer rich in selenium according to claim 4, is characterized in that, spray coating solution carries out in coating machine.
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| CN106045654A (en) * | 2016-05-23 | 2016-10-26 | 刘寿峰 | Selenium-rich sustained-release fertilizer and production method therefor |
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| CN111704502A (en) * | 2020-07-06 | 2020-09-25 | 广东省农业科学院农业资源与环境研究所 | Special synergistic selenium-rich fertilizer for acid soil and preparation method thereof |
| CN111875435A (en) * | 2020-07-28 | 2020-11-03 | 广西大学 | Selenium-rich fertilizer and preparation method and application thereof |
| CN111925246A (en) * | 2020-07-28 | 2020-11-13 | 广西壮族自治区农业科学院 | Foliar fertilizer for selenium-enriched peanut cultivation and preparation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166472A (en) * | 1996-05-23 | 1997-12-03 | 吴敦虎 | Selenium-riched plant-spraying agent and its production process |
| EP1153901A2 (en) * | 2000-05-11 | 2001-11-14 | Consorzio Per La Patata Tipica Di Bologna | Composition for increasing the vegetable nutritional quality and the use thereof |
| CN101805236A (en) * | 2010-05-11 | 2010-08-18 | 蔡瑞琳 | Controlled-release zinc magnesium selenium phytate fertilizer and preparation method thereof |
| CN102503672A (en) * | 2011-10-25 | 2012-06-20 | 惠州市海纳粮油食品有限公司 | Selenium and ferrum-enriched organic inorganic fertilizer and application method thereof |
| CN102515944A (en) * | 2011-12-07 | 2012-06-27 | 苏州硒谷科技有限公司 | Solid coated slow release selenium fertilizer and its preparation method |
| CN102584445A (en) * | 2012-02-17 | 2012-07-18 | 四川省三台永生农业开发有限责任公司 | Amino acid selenium fertilizer |
| CN102804963A (en) * | 2012-08-15 | 2012-12-05 | 苏州硒谷科技有限公司 | Method for increasing absorption and utilization ratio of selenium-containing fertilizer under dry farming condition |
| CN103553746A (en) * | 2013-10-30 | 2014-02-05 | 成都新朝阳作物科学有限公司 | Selenium-rich nutrient and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100866587B1 (en) * | 2006-04-14 | 2008-11-03 | 주식회사 한국애그로바이오 | Method for preparing a liquid fertilizer containing germanum and selenum, the liquid fertilizer thereof, and method for producing a farm products using the same |
-
2014
- 2014-07-24 CN CN201410356092.7A patent/CN104072306B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166472A (en) * | 1996-05-23 | 1997-12-03 | 吴敦虎 | Selenium-riched plant-spraying agent and its production process |
| EP1153901A2 (en) * | 2000-05-11 | 2001-11-14 | Consorzio Per La Patata Tipica Di Bologna | Composition for increasing the vegetable nutritional quality and the use thereof |
| CN101805236A (en) * | 2010-05-11 | 2010-08-18 | 蔡瑞琳 | Controlled-release zinc magnesium selenium phytate fertilizer and preparation method thereof |
| CN102503672A (en) * | 2011-10-25 | 2012-06-20 | 惠州市海纳粮油食品有限公司 | Selenium and ferrum-enriched organic inorganic fertilizer and application method thereof |
| CN102515944A (en) * | 2011-12-07 | 2012-06-27 | 苏州硒谷科技有限公司 | Solid coated slow release selenium fertilizer and its preparation method |
| CN102584445A (en) * | 2012-02-17 | 2012-07-18 | 四川省三台永生农业开发有限责任公司 | Amino acid selenium fertilizer |
| CN102804963A (en) * | 2012-08-15 | 2012-12-05 | 苏州硒谷科技有限公司 | Method for increasing absorption and utilization ratio of selenium-containing fertilizer under dry farming condition |
| CN103553746A (en) * | 2013-10-30 | 2014-02-05 | 成都新朝阳作物科学有限公司 | Selenium-rich nutrient and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 有机无机复混硒肥的研制与实用效果;张志明 等;《第四届全国绿色环保肥料新技术、新产品交流会论文集》;20041231;40-48 * |
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